Cost-Benefit Analysis of Computer

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e 9281BUREAU OF MINES

INFORMATION CIRCULAR 1991

Cost Benefit Analysis of Computer-Assisted Mining Through Productionand Cost Modeling

By Suresh K Bhatt

UNITED STATES DEPARTMENT OF THE INTERIOR



U S Bureau o MinesSpok ne R e ~ p ? r ~ , . h n t

. v il l

" .

l, " .

Mission: As the Nation s principal conservation

agency, the Department of the Interior has respon-

sibility for most of our nationally-owned publiclands and natural and cultural resources . This

includes fostering wise use of our land and water

resources, protecting our fish and wildlife, pre-

serving the environmental and cultural values of

our national parks and historical places, and pro-

viding for the enjoyment of life through outdoor

recreation, The Department assesses our energy

and mineral resources and works to assure that

their development is in the best interests of all

our people. The Department also promotes the

goals of the Take Pride in America campaign by

encouraging stewardship and citizen responsibil-

ity for the publi c lands and promoting citizen par-ticipation in their care. The Department also has

a major responsibility for American Indian reser-

vation communities and for people who live in

Island Territories under U.S. Administration.



Information ircular 9281

Cost Benefit Analysis of Computer-

Assisted Mining Through Productionand Cost Modeling

By Suresh K Bhatt

UNITED STATES DEPARTMENT OF THE INTERIOR

Manuel Lujan Jr. Secretary

BUREAU OF MINES

T S Ary Director



Library o Congress Cataloging in Publication Data:

Bhatt, S. K Suresh K..

Cost-benefit analysis of computer-assisted mining through production and cost

modeling / by S K Bhatt.

p. cm . - Information circular / Bureau of Mines; 9281)

Includes bibliographical references.

Supt. of Docs. no.: I 28 .27:9281

1 Mining engineering ·Automati on-Cost effectiveness. 2 Mining engineering

Cost effectiveness. I Title. II. Series: Information circular United States. Bureau

of Mines); 9281 .

TN29S.U4 [TN276] 622 s dc20 [622] 90-22024 rp



CONTENTS

age

Abstract. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Base criteria and parameters for mining scenarios . . . . . . . . . . . . 2

General mine description . 2

Surface facilities and arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Mining methods and equipment 3

Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Base production and cost models and mining scenarios 3

Mine production model . . 3

Mine cost model . . 5

Mining scenarios for computer assisted mining . 5

Cost benefit analysis for computer assisted mining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Conclusions . . 8

Appendix A Glossary for production and cost models for appendixes Band C 9

Appendix B. Computer printouts of base production and cost models data 10Appendix C. Computer printouts of improvement models production and cost data . 12

ILLUSTR TION

1 Relationship of productivity and cost of mining. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

T BLES

1 Example of the number of UMWA mine personnel 3

2 Summary of results of 15 production and cost models compared with base case . . . . . . . . . . . . . . . . . . . 7



t

in

min

UN T OF ME SURE BBREVI TIONS USED IN THIS REPORT

foot

hour

inch

minute

st

st min

short ton

short tOll per minute

stjworker-day short to per worker-day

/st dollar per short ton



COST BEN ANALYSIS OF COMPUTER ASSISTED MININGTHROUGH PRODUCTION AND COST MODELING

By Suresh K Bhatt1

ABSTRACT

A mathematically simulated modeling s used n this U.S. Bureau of Mines to

represent a hypothetical with mining technology and prevalent costs.

Mining scenarios were and evaluated for potential benefits and costs available through

computer-assisted and methodology are described.

IMining engineer Pittsburgh Research Center U.S. Bureau o Mines Pittsburgh PA.





a of overland A number of sediment-

ation ponds are situated the general mine vicinity.

Trucks are used to coal to the as an

alternate mode. Trucks are also used to refuse

material from the plant to the dumping areas. Electric

power to the complex is supplied from the nearby

power station.

MINING METHODS AND EQUIPMENT

The mining include of main head-

submains, panels, and butt for room

and pillaring. At present, no Iongwall or mmmg is

being conducted. Full roof bolting is practiced throughout

the mine. A two-shuttle-car is used for face coal

haulage. All section belts are 36 in wide and equipped

with feeders. ventilates the wo,rklng

sections. Mining section models are standard-

ized and typically include one Lee Norse 265 HH continuous miner and one Stamler BF-2 feeder.

3

PERSONNEL

A section crew consists of a continuous miner o p ( ~ r a t o r ,continuous miner helper, two shuttle car one

roof bolter, one roof bolter helper, one utility person, and

a mechanic-electrician (total eight). Each section has a

Other UMWA personnel include general

general outside, maintenance, and preparation.

Table 1 gives the UMWA personnel breakdown work

rlltf' .IJI'rv for the mine.

Table 1.-Example of the number

of UMWA mine personnel,by work category

Work category

Section .... . ....... , 96

General inside ........... 32

Maintenance ...... ,. .... 24

Preparation . . , . . . . . ... 25

General outside ,.,., ..... . -1Total 185

BASE PRODUCTION AND COST MODELS AND MINING SCENARIOS

The mine is simulated through the two math-

ematical models, production and cost, utilizing a

I-year and shown by B. Five COIltinU01JS

miners are set for in the following areas:

1) sections 1 and 2 two units in seven-heading

(2) section 3 one unit in three-heading longwall devel

OPlnellt section, (3) section 4 one unit in t l v e : - h ~ a d i n gsut)m:ams, (4) section 5 one unit in room-and-pillar devel

oplnellt section, and (5) &--one unit for

mine construction work.

The following relate to the models

(appendixes B and C) entitled "Mine Production Model

by Continuous Miner Section" and "Cost of Mining

Statement." Various scenarios, which will be con-

sidered in potential analysis for computer-

assisted mining, are also described.

MINE PRODUCTION MODEL

The model rerlre ients a six-section (including construction) mine 504,458 st of clean coal annually.

Most of the items are self-explanatory; however, those

needing defined and include

the me'tholdo\l)gy obtaining them.

Minutes per shift.-Scheduled production shift is 8 h or

480 min.

Travel time. This period includes man-trip in and man

trip out. in is total time to travel from mine

portal to dinner hole in a excluding any

major but including in mantrip cars and

walking. Similarly, man-trip out is time from dinner

hole in the section to the outside (mine portal) and in-

cludes for mantrip and from the dinner

hole to the car, but excludes major

unch time . - I t is normally 30 min. I f a crew is relieved

for lunch, the time for lunch would be zero.

Service time. It is the scheduled maintenance time for

of section during a Pf(Jdtlctlon

shift. In this case, it is with another work ele-

"c l;:arlUp and prepare to mine," described

Rel'na.fnif1 g operating time. Total shift minutes (480)

minus

next

for

lunch, and service time give this value. The

category in the model is downtime

equipment items and mining conditions.

EqllllIJml::nt delays and mine conditions that dis

rupt the production cycle are listed. These can be

due to mechanical breakdowns or other conditions render-

eqlllpiment unavailable for production. These delays

are referred to as the "section downtime." Itemsinclude continuous shuttle car (S.C.), section belt

conveyor, belt feeder, and section power Addi

tional roof control, if in the section because of

roof and rib conditions, comes under timber and rail

Other natural conditions such as floor heaving, rock bursts,

and water and mud in the roadways, are listed under

conditions safety-related delays are listed separately

if time is for the section e.g., in-

creasing to dilute excessive gas and conducting

safety checks on equipment and the in addition



me:enng before the crew to the

After the hole, the

''''''r .c ,. holds a meeting discussing safety con

workers, actual accident findings, unsafe

work practices, or new regulations that may the

section safety.

Cleanup to mine C/PTM) is a major work

activity that is done toward the end of the shift. t

includes the equipment and ""'""OJ.J,J,lll'>

shovel or scoop, so that the is ready the

next equipment includes lllilLlUlJlg

sary maintenance checks and

such requirements, bits, lubricating, adjusting

safety or monitoring devices, and the like, which is

cally needed after a operation.

Other preparatory work the meeting,

i.e., traveling from the dinner hole to the equipment and

moving the equipment to the face and

handling) ends when the continuous miner to

load the first S.C. time is consumed in withdrawing

equipment from the working face after the last

walking to the dinner hole, and any (reason-

able) prior to leaving the hole.

AU items (previous paragraph) are lumped in a

delay category; in this case, they are listed under

model adjust delays which also includes any improperly

reported or unaccountable The purpose of this

category is to provide a means of the model to

make it and with normal worker effi

ciency and equipment utilization.

Unit shift is the number of shifts a par-

ticular mining machine unit during the year.The next group of data in the model tabulation is

data and to face

A working s a three-dimensional in this

case, it is a cut made by the continuous miner (approxi-

mately 20 ft by 18 ft wide by 5 ft high). Cubic

place is volume of a and when figure is mul

tiplied by the density pounds per cubic foot) of the mined

material (seam, and floor), it the raw tonnage

per cut (place). figure by the S.c. capacity

the number of S.C.'s per place. Raw product is con-

verted to tonnage applying an appropriate coal re-

covery factor.next group of data is identified as place time and

represents the necessary to complete activities

in a cut. on time and observations,

typical rates for mrOlulg- Oa1amg,

S.c. are developed. These when l l lLOlUIJU -

by number cars per provide total time for a par-

ticular event with one exception. S.c. change is the

time an S c is away from the continuous excluding

delays that prevent the car from to the

continuous miner in the average time governed by the haul

distance. The average S.c. change in a place (cut) isequal to the total car change time divided by number

of car changes (equivalent to total S.c. minus

one).

There is no S c change the last car is loaded nor

before the first car is The normal practice, there-

fore, is to reduce the number of cars by one or ' lUll , ,

the fractional part and multiplying it by average S c

time to obtain the total S c per cut. Total

loading and are by

multiplying total number of cars per place by unit (per

car)

Other place work elements like

every 20 min

erecting posts right after mining (loading) a

before supports (bolts) are installed, constitute

additional necessary in a cycle. The contin

uous miner then has to be trammed to the next this

including handling is listed under tram. These

values are added tota l is called totalplace time.

Maneuvering (continuous miner) time is the for

maneuvering the equipment when the S.c. is with the con-

tinuous miner. As the name implies, bolting placetime is the to complete bolting in a cut so

that the continuous miner can move in another cut. So

long as roof time is less than the miningplace time determines the of

mined per shift. When roofO ' T P l p r than mining time or roof bolting time

comes a bottleneck, the number of cuts are reduced ac-

cordingly, since bolting place time then

Place time, or bolting, is the greater of the two

divided remaining uptime to the number places

unit shift. Productivity in clean short ton per unit shift

obtained by multiplying the number of (cuts) to

the per place. The tonnage minute or hour

represents the value per remaining The value per

unit multiplied by total unit provides total

annual short tons by the mining section. Similarly, the

values are t abulated for other mining The values

(average) line items in the last column of the model are

weighted averages to the shifts insection categories.



MINE COST MODEL

This model or cost of mining statement provides de

tailed cost breakdowns by line item. The annual cost is

provided in total dollars and also in dollars per clean short

ton. Individual cost items are termed either fIxed or

variable. Fixed means fIxed dollars for a particular period; in this case, it is 1 year. Examples are labor overhead

and depreciation. Variable cost varies per shift, day ormonth, depending on tonnage produced. Examples are

royalties Federal black lung fee and supplies-operating.

Any change in a mine production model will have an effect

on its cost model. For example, new equipment used for

increasing mine production will have a twofold effect:

(1) overall cost per short ton reduced, and (2) depreciation

line item or leasing cost increased.

The example mine cost model shows a cost of $28.56/st

on clean coal basis for the base year 1988.

MINING SCEN RIOS OR COMPUTER-

SSISTED MINING

While considering potential mining scenarios, all

equipment and mining systems are assumed to remain un

changed in the existing mine with the exception of contin

uous mining machine. The mining machine is envisioned

to be operated by computer-assisted control, from a dis

tance of 250 to 1,000 ft (based on number of headings in

a mining section). The operator compartment is situated

near the section-belt tailpiece in the fresh intake air. The

operator is able to control ll functions of the mining

machine-cutting, tramming, etc. through visual, aural,and other displays in the compartment employing proven

computer technology.

Normal mining cycle begins as the continuous miner

advances the coal face on the ventilation side of a heading

or crosscut. Extraction of coal in the immediate face is

continued using S.c. to haul the coal to the belt tailpiece

until the furthest depth of penetration (20 ft) is reached.

Upon completing both passes in the cut (18 ft), the con

tinuous miner is trammed to the next heading or crosscut,

according to the cut-sequence plan. A roof bolting ma

chine then enters the mined-out face to bolt the place in

accordance with the approved roof control plan. The mine

utilizes conventional shell-type (4 ft) bolts. After the roofbolting is completed, the face area s cleaned up and rock

dusted.

5

A computer-assisted continuous miner will enhance the

section productivity because of the following: (1) reducedequipment downtime, thereby increasing available oper

ating time (uptime); and (2) reduced mining cycle time,

thereby providing additional number of cuts per shift.

The productivity is increased simply by making the

mining equipment available for more time and increasingits utilization (compared to the manually operated

system). By effective planning of mining operations, standardization, maintenance and spare parts inventory, im-

proving the relations between management and labor,

training, and coordination, it is possible to make more

efficient utilization of labor. In addition, the quality of

mined product can be controlled effectively to provide a

consistent output to the benefIciation plant and the user.

The most important team player in the mining section

is the continuous mining machine operator. In the

computer-assisted section, this person is highly skilled to

operate the machine and qualifIed enough to make neces

sary judgments in the mining operations. He or she has

the authority of a section supervisor and is able to work

independently. A mining machine helper is not needed on

a full-time basis. The role of a section supervisor involves

noncontinuous miner operations and can be called a coordinator or nominal section boss. Similarly, the mechanic

electrician is highly skilled to maintain the sophisticatedmining machine. The role of utility personnel is alsoreduced as the mining machine performs the most facecleanup functions. Since the continuous miner operator is

to be involved in management and decisionmaking roles,it may be appropriate to make him or her a salariedemployee. Necessary mine operations data have to flow to

ll employees involved, salaried and UMWA, requiring aneffective mode of distribution and coordination to properlyorganize, operate, and maintain the advanced miningequipment.

Computer technology will enable improved monitoringof equipment condition to help early detection of faultyproblems and breakdowns, allowing necessary preventativemaintenance. Better maintenance planning not only im

proves equipment availability, efficiency, and productivity,but also reduces mining cost by maintaining a minimuminventory of spare parts.

Since the operator s located in a safer, cleaner, andrelaxed environment and not doing monotonous work, he

or she is subject to less physical and mental tension orfatigue and, therefore, able to work with greater effIciency,accuracy, and maintain high standards and housekeeping.



In the example mine, two scenarios are considered:

1. Continuous miner operating at existing efficiency

reflected by existing loading rate, but for longer available

time (uptime increased by 60 min, 75 min, and 90 min).

2. Continuous miner operating at improved efficiency

reflected by new loading rate (existing rate increased by25 ,50 , 75%, and 100%) and for longer available time

as stated above.

Both the scenarios have improved maneuvering rate,

but it is not a very significant amount. Other improve

ments that are common to all models include:

1. Elimination of gas test time (2 min) from the place

mining cycle. By having a methane monitoring device on

the continuous miner and an operator's ability to read at

control station, it is not necessary to interrupt mining

operation to take manual gas tests every 20 min.

2. Improved tram time (including cable handling) inthe place cycle. Improved efficiency increases the tram

rate and reduces cable handling delays. An appropriate

percentage for this improvement will be applied in the

models.

Basis of increasing the remaining uptime follows:

Face cleanup is effectively done by the remote-controlled

continuous miner during the mining cycle. The need of

utility personnel otherwise needed (with scoop or shovel)

is significantly reduced. An effective equipment servicing

and maintenance program and face cleanup by the contin

uous miner can reduce the existing C PTM time (60 min)to 30 min. Also, the continuous miner downtime can be

minimized or eliminated (saving 30 to 50 min) . Since the

continuous miner operator is away from the hazardous

work face, it can be assumed that safety related downtime

is improved by 7 min. Prudent engineering and operating

practices can further improve productivity of a mine; for

example, maintain a continuous miner when belt or S.C.'s

are down.

odel adjustment and other delays provide room for

further improvement.

A review of the section work force indicates that one

person can be eliminated from the crew (now seven

person crew) with the new mining system. Various im-

provement ideas discussed in this section will be modeled

when conducting cost-benefit analysis for computer

assisted mining.

COST BENEFIT ANALYSIS FOR COMPUTER ASSISTED MINING

In the example hypothetical mine, two scenarios are

considered for computer-assisted mining:

1. Continuous miner operating at existing efficiency,

reflected by existing loading rate (1.95 min per car), but

for longer available time (uptime increased by 60 min,

75 min, and 90 min). This situation provides three pro

duction models.

2. Continuous miner operating at improved efficiency,

reflected by new loading rates (existing rate increased by

25%, 50%, 75%, and 100%) and for longer time, i.e., in

creasing uptime by 60 min, 75 min, and 90 min, as stated

above. The new rates are 1.56 min per car, 1.30 min per

car, 1.11 min per car, and 0.97 min per car for the four ef

ficiencies. The figures used in this example signify the rel

ative importance and not necessarily their absolute values.

One minute per car means a loading rate of 7 st/min,

which is a reasonably high number as an annual averagerate. This condition provides a total of 12 production

models.

Other improvements that are common to all models

include:

1. Improved continuous miner maneuver rate of

0.15 min per car.

2. Elimination of gas test time (2 min) from place

mining cycle.3. Improved tram time or 60% of normal time.

Each production model has a corresponding cost model.

The new mining system has resulted in the following

changes:

One person is eliminated from the section crew, now 7

person crew; the total reduction is 12 personnel for 12

working shifts. t is assumed that continuous miner helper

and utility personnel will be needed for one-half of their

times or one person should replace two.

By effective planning of mine operations, stand

ardization, maintenance, and spare-parts inventory, improving the relations between management and labor, it is

possible to more efficiently utilize the work force.

The reduction of 12 personnel out of the total 185

UMWA personnel represents a 6 decrease in the hourly

labor, benefits, and welfare costs. These line items on the



cost of mining statement are A2, A4, and All. The new

values for these items are 3,290,000, 846,000, and

282,000.

It is estimated that capital cost requirements for

continuous miner additions including computer and mobile

control structure is 250,000. Assuming interest at 10

and straight line depreciation over 7 years (no salvage

value) , the increase in annual interest expense, line item

B5, is 25,000, and the increase in line item Cl is 35,714.

The new values for B5 and Cl are 525,000 and 585,714,

respectively. Refer to the particular model for details.

The five changes shown above (two scenarios and three

improvements) are applied to all cost models. The

productivity figure (short ton per worker-day) in each cost

model is now calculated using new production and work

force (new mine total, 208).

Table 2 summarizes the results of 15 production and

cost models along with the base case. Detailed

information on base and improvement cost and productionmodels is given in the appendixes.

Table 2.-Summary of results of 15 production and cost

models compared with base case

Uptime Annual Cost of

Mine model increase, production, mining,

min clean st $/st

Existing technology

(base case) . ..... . 0 504,458 28.56

Computer-assisted

mining:

Normal efficiency . . 60 743,047 20.91

Do .. , . . .. . . 75 788,780 20.02

Do . .. .. . 90 833,867 19 .25

Increase efficiency

by 25 . . , . .... 60 807,102 19 .70

Do .. . . . . .. . 75 856,775 18 .89

Do .. .. . .. . . 90 905,725 18 .17

Increase efficiency

by 50 . . . . . . . . 60 856,331 18 .89

Do . .. . . .. 75 909,032 18 .12

Do . . ....... 90 960,950 17.45

Increase efficiency

by 75% .... . . .. 60 896,293 18 .30

Do . . ....... 75 951,451 17 .57

Do . . . . . . . . . 90 1,005,776 16.93

Increase efficiency

by 100% . . . . . . . 60 928,217 17.87

Do . . . . . . . . . 75 985,338 17 .16Do . . . . . . . . . 90 1,041,585 16 .54

7

Comparing the highest production and corresponding

cost figures, 1,041,585 st and 16.54 to the base figures,

504,458 st and 28.56, the resultant improvements are

106 and 42 for production and cost, respectively.

Similarly, comparing the lowest improvement figures,

743,047 st and 20.91, to the base case, the resultant

production and cost improvements are 47 and 27%,respectively. The midpoint of the range is 77 for

production and 35% for cost improvement.

Because of possible variations in mining conditions,data limitations, inherent imprecision in any simulating

system, necessity of using judgments, and the human

factors involved where changes are projected, it is believed

reasonable to expect 75 to 125 attainment of the

results projected.Conservatively , it can be assumed that the new mining

system can improve mine production by 58 , resulting in

a cost-of-mining improvement of 26 .

Although the mine scenario assumes a 6 reduction in

face work force, it is not a true representation as it does

not address potential increase in service personnel Th e

change in work force will vary with company size, orga

nizational philosophy, system's success, and penetration in

the industry, and is not estimated at this time.Figure 1 shows the relationship of productivity (short

ton per worker-day) and cost of mining (dollar per short

ton), as obtained from the base and improvement cost and

production models.

40

35

30(J)

25f)

0u 20

15

105 10 15 20 25 30

PRODUCTIVITY, st worker - day

Figure 1.-Relationship of productivity and cost of mining.



8

ON LUSIONS

A mining m chine can Slgltlllicatltly Estimates indicate a increase of 58 in mine

increase productivity and reduce the cost productivity, reducing the cost of 26 .

Also, it provides a safer and healthier work environment.



9

PPENDIX A. GlOSSARY PRODUCTION ND COST MODELS

FOR PPENDIXES BAND

Adj. Time St time study data rep,resent

a practical model consistent with normal worker eltlclelrlcy

and equipment utilization.C/PTM. Clean up and prepare to mine.

Model requITed to a

model. improperly reported or unaccountable

Place. A three-dimensional unit or cut mined by a

mining machine approximately 2 t deep by 18 t wide by

5 t high).

Place Time. Time to mine a cut.

Roof Bolting Place Time. Time required to bolt a

place.S.C.-Shuttle car with 7-st raw coal capacity.

Unit mining unit operating an 8·h shift.

WTD average values based upon num-

er ofunit shifts.



10

APPENDIX B. OMPUT R PRINTOUTS OF BASE PRODUCTION

AND COST MODELS DATA


BY CONTINUOUS MINER SECTION

ITEMIDENTIFICATION

SECTION 1SECTION 2 SECTION 3

SECTION 4 SECTION 5 SECTION

Minutes Per Shi f t 480 . 0 480.0 480.0 480.0 480.0 480.0

Travel Time 60.0 62.0 65.0 58.0 62 . 0 64.0

Lunch Time 30.0 30 . 0 30.0 30.0 30.0 30.0

Serv ice Tima 0.0 0.0 0.0 0.0 0.0 0.0

Remaining Operat ing Time 390.0 388.0 38 5 . 0 392.0 388.0 386.0

6 TOTAL WTD

480 . 0

61. 7

30.0

0.0388.3

Downtime

Miner 52.8 55.0 48.0 59 . 4 40 . 0 60.0 52.9S.C. 15.0 10 . 2 12 .0 15 .5 12 .0 18.2 13 .7

B el t 21.0 22 . 2 28.0 18 .5 21.0 19.5 21. 9

Bol ter 4.8 5 . 0 6.0 5 .9 9 . 0 4.6 5.7

Feeder 3.0 3 . 8 4.2 3 .6 5 . 0 6.8 4 .3

C/PTM 60.5 61. 0 52.0 58 .8 65.0 68 . 0 60.2

Power 1 .8 1 .0 2.0 2.5 2.8 1 .9 2.0

Timber Rai l 2.0 2.9 3.0 5 .0 5 .3 3.0 3 . 5

Condi t ions 5 .0 5.8 6.0 2 .5 4 . 2 2.8 4 .5Saf e t y 18 .0 15.5 16 .8 20.0 17.0 15.1 17 . 2

Model Adjust Delays 20 . 0 18.5 17.8 22 0 15 .0 19.5 19.0Other 0 . 0 0.0 0 .0 0 .0 0.0 0.0 0 . 0

Total Downtime 203.9 20 0 . 9 195.8 213.7 195.3 219.4 20 4 . 7

Remaining Uptime 186.1 187.1 189.2 118.3 192.7 166.6 183.6

Unit Shi f t s /Year 502 480 536 528 354 380 2,780

Cubic Feet /P lace 1 710 .7 1,731. 7 1 857 .4 l S80 . 0 1 642 .8 1 409 .4 1,724 . 9

Densi ty 94.50 94.50 94.50 94 . 50 94.50 94.50 94.50

Raw Tons/Place 80 . S 81. 8 87.8 88 . 8 77 . 6 66 . 6 81. 5

Raw Tons /S.C. 7.0 7.0 7.0 7.0 7.0 7.0 7.0No . S.C./P1ace 11.5 11.7 12 .5 12 .7 11.1 9.5 11 .6

Reject 22 . 80 22.80 22. SO 22.80 22.80 22 . 80 22.80Clean Tons /S.C. 5.40 5.40 5.40 5.40 5.40 5.40 5.40

---------------------------------- ------------------------------------- -------------------------- Place Time

Mining

Maneuvering

S.C. Change

Gas Test Safe ty

Vent i l a t ion Pos ts

Tram

Tota l Place Time

Roof Bol t ing Place Time

Placea/Uni t Shif t

Product iv i ty Clean Coal

Tona/Unit Shi f t

TonS/Hour

TonS/Minute

Annual Product1c-.n, a t

22 . 52

3 . 46

20.

682.00

8.605.80

63.06

53.06

2.951

184.2

59.4

0 . 990

92,445

22.79

3 . 51

20.902 . CO

8 . 60

6.20

64.00

54.00

2.923

l a4 .7

:SS .2

0.937

88,638

24.45

3.76

25.202 . 00

8 . 60

6.38

70.39

60 . 39

2.688

182.1

57 . 8

0 . 963

97,613

24.75

3.81

19.442.00

8.60

7.80

66.39

56.39

2.686

184.2

62.0

1.033

97,240

21. 62

3.33

16.502.00

8.60

5.30

57.35

47.35

3 . 360

201.3

62.71.045

71,277

18.55

2.85

18.002 . 00

8.60

6 . 85

56.86

46.86

2 . 930

15 0 . 6

54 . 3

0.904

57,245

22.70

3.49

20.462.00

8.60

6.44

63.69

53.69

2.92

181. 5

59 . 3

0 . 988

504,458

AV



Basis of Est imates

Days of Operation

Total Product ion (Clean Btl (000)

Daily Product ion (Clean st )

Approx. a t /worker- day

A.Coat b a s i s

Direc t Operat i ng Costs

1 . Labor - Sa la r ied

2 . Labor - Hourly

3 . Benef i t e - Sa la r ied

4 . Benef i t s - Hourly

5 . Suppl i e s - Operating

6 . Suppl ies - Maintenance

7 . ower

8 . F I C A ' Unemployment axea

9 . Workmen s Compen.ation Insurance

10 . Black Lung Compenaation insurance

11 . Welfsre - Hourly12 . Welfare - Tonnage

13 . Safe ty Expense.

14 . P r o d u c t i o n ' Safe ty Incen t ives

15. Accident Coat .

16. Re c lamat ion Fe .

17. Federa l Black Lung Fee

18. Other Costs

B .

Total

Other Cash Costs1 . Overhead

2. Roya l t ie s

3. Miscellaneous Taxe.

4. Equipment Leasing Coata

5. I n t e r e s t Expense

6. Miscellaneous I ncome

To ta l

C. Other Co s t s

1 . Deprec ia t ion

2. Amort izat ion of Development Coats

3 . Deplet ion

Total

Tota l Cost of Mining

Fixed Dol la rs Per Year

COST OF MINING STATEMENT

Base Year 1988

Adj. Time St . Data

240

50 4 . 458

2,102

9 . 550

Dol la rs (000)

1,000.000

3,500.000

46.000

900.000

1,513.374

1 800.000

340.000

400.000

175.000

:340.000

300.000

711.790

150.000

250.000

200.000

75.669

252.229

0.000

11,954.062

500.000

302.675

0 . 000

60 0 . 000

50 0 . 000

0.0001 902 .675

550.0000 . 000

0.000

55 0 . 000

14 406 .737

/ s t

1. 982

6.938

091

1 . 784

3 . 000

3 . 568

674

0 . 193

0.347

674

0.5951 . 411

297

0.496

0.396

0 . 150

500

0.000

23.697

0 . 991

0 . 600

0 . 000

1.189

0.991

0.000

3.772

1. 090

0 . 000

0 . 000

1. 090

28.559



12

PPENDIX C. COMPUTER PRINTOUTS OF IMPROVEMENT MODELS-

PRODUCTION ND COST D T



IMPROVED UPTIME BY 60 MINUTES

ITEM IDENTIFICATION SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 TOTAL WTD

Minutea Per Shif t

Travel Time

Lunch Time

Serv ice Tima

Remaining Operat ing Time

Downtime

Miner

S.C.

Bel t

Bol ter

Feeder

C/PTM

Power

Timber Rail

Condi t ions

Safe ty

Model Adjus t Delays

Other

Total Downtime

Remaining Uptime

Unit Shi f ta /Year

Cubic Feet /P lace

Densi ty

Raw Tona/Place

Raw Tona/S.C.

No. S. C. /P lace

Rejec t

Clean Tons/S.C.

Place Time

Mining

ManeuveringS.C. Change

Gaa Teat Safe ty

Vent i l a t ion Poats

Tram

Total Place Time


P1acea/Uni t Shif t

Product iv i ty - Clean Coal

Tona/Unit Shif t

Tona/Hour

Tona/Minute

Annual Product ion a t

480.0

60.0

30 . 0

0.0

39 0 . 0

22.8

15 .0

21.0

4.83 . 0

30 . 5

1 .8

2 . 0

5 . 0

18.020.0

0.0

143.9

246.1

502

1 710.7

94.50

80.8

7.0

11.5

22.80

5.40

22.52

1.7320.68

0.00

8.60

3.48

57.01

38.80

4.317

269.465.7

1.095

135 228

480.0

62.0

30.0

0.0

388.0

25.0

10 . 2

22.2

5 . 0

3.8

31. 0

1 .0

2.9

5.8

15.518.5

0.0

140.9

247.1

480

1 731.7

94.50

81. 8

7.0

11 .7

22.80

5.40

22.79

1.75

20.90

0.00

8.60

3.72

57.77

40.20

4.278

270.265.6

1 .093

129 694

480.0

65.0

30.0

0.0

385.0

18.0

12 .028 . 0

6.04 . 2

22 . 0

2.0

3 . 0

6.0

16.817.8

0.0

135.8

249.2

536

1 857 .4

94.50

87.8

7.0

12.5

22.80

5.40

24.45

1 . 88

25.20

0.008.60

3.83

63.96

39 . 50

3.896

264.063.6

1 . 059

141 500

480.0

58.0

30.0

0.0

392.0

29.4

15.5

18.5

5.9

3 . 6

28.8

2.5

5 . 0

2.5

20.022.0

0.0

153.7

238.3

528

1 880 .0

94.50

88.8

7.0

12.7

22.80

5.40

24.75

1. 90

19.44

0 . 00

8.60

4.68

59.37

38.75

4.014

275.3

69.3

1.155

145 337

480.0

62.0

30.0

0.0

388.0

10 .0

12 .0

21. 0

8 . 0

5 .0

35 . 0

2 . 8

5.3

4.2

17.015.0

0.0

135.3

252.7

354

1 642 .8

94.50

77.6

7 .0

11.122.80

5 . 40

21. 62

1. 66

16.50

0.00

8.603 .18

51.57

36.80

4.901

293.769.7

1.162

103 953

480 . 0

64.0

30.0

0.0

386.0

30.0

18 . 2

19.5

4.66 . 8

38 . 0

1 .9

3.0

2.8

15.119.5

0.015 9 . 4

226.6

380

1 409 .4

94.50

66.6

7.0

9.5

22.80

5.40

18.55

1.43

18.00

0.00

8.60

4.11

50.69

37.00

4.470

229.860.9

1.014

87 335

48 0 . 0

61. 7

30.0

0.0

388.3

22.9

13.7

21. 9

5.7

4 . 3

30 . 2

2 . 0

3.5

4.5

17.219 .0

0.0

14 4 . 7

243.6

2 780

1 724 .9

94.50

81.5

7.0

11. 6

22.80

5.40

22.70

1.75

20.46

0.008 . 60

3.8657.37

38.67

4.30

267.3

65.8

1. 097

743 047

AV



Basis of Estimates

Days of Operation

Total Product ion (Clean at) (000)

Daily Product ion (Clean at)

Approx. st Worker-Day

A. Direot.. 1 . Labor -.. 2. Labor

.. 3.

. 4. Benefi ts

Power

Cost bas is

Hourly

Operating- Maintenanoe

5... 6.

.. 7.,. 8.

.. 9.

.. 10.

* 11.

FICA , Unemployment Taxes

Workmen'. Compensation InsuranceBlack Lung Compensation InsuranceWelfare - HourlyWelfare Tonnage

safety Expen ...s

12... 13... 14.

* 15.

Product ion , Safety Inoent ivesAccident Cost .

16.17.

18.

ReclllJllatlon FeeFederal Black Lung

Other Costs

Total

Fee

B. Oth . r Cash Costs

* 1. Overhead

2.

3. Tax ...

4. Equipment Leasing Costs

* 5. In terest Expense.

6. Miscellaneous Income

Total

C. Other Costs1.2. of D .velopment

3. Depletion

Total

Total Cost of Mining

* Fixed Dollars Per Year

Costs


Base Year 1988

Adj. Time St. Data

240

504.458

2,102

9.550

DollarsCOOOI 1st

1,000.0003,500.000

46.000

900.000

1,513.3741,800.000

340.000400.000

115.000

340.000

300.000

711.790

150.000

250.000

200.000

75.669252.229

0.000

11,954.062

500.000

302.675

0.000

600.000

500.000

0.000

1,902.675

550.000

0.000

0.000

550.000

14,406.737

1.982

6.938

0.0911.784

3.0003.568

0.674

0.793

0.341

0.674

0.5951.411

0.2970 .U6

0.396

0.1500.500

0.000

23.697

0.991

0.600

0.000

1.189

O. 991

0.0003.772

1.090

0.000

0.000

1.090

28.559

Uptime by 60 Minutes

240743.047

3,096

14.885

Dol1ars(OOO) / s t

1,000 .0003,290.000

46.000

846.000

2,229.1411 ,800 .000

340.000

400.000

115.000

340.000

282.0001,048 .439

150 000

250.000

200.000

111. 457

371.524

0.000

12,879.561

500.000

445.8280.000

600.000

525.000

0.000

2,070.828

585.714

0.000

0.000

585.714

15,536.103

1.3464.428

0.062

1.139

3.000

2.422

0.458

0.538

0.236

0.458

0.380

1.411

0.202

0.336

0.269

0.1500.500

0.000

17.333

0.673

0.600

0.000

0.807

0.707

0.000

2.787

0.788

0.000

0.000

0.188

20.909

13



14

ITEM IDENTIFICATION

Minutes Per Sbif t

Trav.l '1 '1_

Lunch Time

Service Time

Remaining Operating T i _

Downtime

Miner

S.C.

BeltBolterFeed.rC/PTM

Power

Timber RailCondit ion.

Delaya

OtherTotal Downti"",

Remaining Upt i_

Unit Shifta /Year

Cubic Feet/PlaceDensi tyRaw ' rona/Plae.Raw Tona/S.C.

No. S.C./PlaeeRejectClean 'rona/S.C.

Place Time

MiningManeuveringS.C. Change

Gall Teatent i la t ion

'rram

Total Plae. Time

Roof Bolt ing Place Time

Places/Unit Shif t

Productivity - Clean Coal

Sh1ft

'ronlll/Minute

Annual Production,at

SECTION

480.0

60.0

30.0

0.0

390.0

12.8

15.0

21.0

4.8

3.0

30.5

1 .8

2.0

5 0

13.020.0

0 .0

128.9

261.1

502

1 710 .7

94.50

80.87.0

11.522.80

5.40

22.52

1.7320.68

0.00

8.60

3.48

57.01

38.80

4.580

285.8

65.7

1 .095

143,470

1 SECTION

480.0

62.0

30.0

0.0

388.0

15 0

10.2

22.2

5.0

3.8

31.0

1.0

2 .9

5.8

10 .518.5

0.0

125.9

262.1

480

1,731. 7

94.50

81.8

7.0

11 .722.80

5 40

22.79

1. 75

20.90

0.00

8.60

3.72

57.17

40.20

4.537

286.6

65.6

1.093

131,567



IMPROVE UPTIME BY 15 MINUTES

2 SECTION

480.0

65.0

30.0

0 .0

385.0

B O

12 .0

28.0

fLO

4.2

22 0

2.0

3 .0

6.0

11.8

17.80 .0

120.8

264.2

536

1,857 .4

l4.50

81.8

7.012 .5

22.90

5.40

24.45

1. 88

25.20

0.008.60

3.1Il

63.96

39.50

4.131

279.963.6

1.059

150,018

3 SECTION

480.0

58.0

30.0

0 .0

392.0

19 .4

lS 5

IB.5

5 .9

3 .6

28.8

2 .5

5 .0

2 .5

15 .0

22.00 .0

138.1

253 3

528

1 880 .0

l4.50

88.8

7 .0

12 .7

22.80

5.40

24.75

1 .90

19.440.00

8.60

4.68

59.37

38.15

4.261

292.69.3

1.155

154,485

4 SECTION

480.0

62 0

30. a

0.0388.0

0.0

12 a21.0

8.0

5.0

35.0

2.8

5 .3

4 2

12 .0

15 .0

0 .0

120.3

267.1

354

1 642 .8

94.50

11.6

7.011.1

22.80

5.40

21.62

1 . 66

16.50

0.00

9 .60

3 .18

51.51

36.80

5.191

311.1

69.1

1 .162

1 1 0 1 2 3

5 SECTION

480.0

64 0

30.0

0.0386.0

20.0

18.2

19.5

4.6

6.8

38.0

1 .9

3.0

2.8

10.1

19 5

o 0

144.4

241. 6

380

1 409 .4

94.50

66.67.09.5

22.80

5.40

18.551 .43

18.00

0.00

8.60

4.11

50.69

37.00

4.166

245 0

60.9

1 .014

93,117

6 TOTAL/WTD V

480.061. 7

30.0

0.0388.3

12.9

13.721. 9

5.1

4.3

30.2

2 0

3 5

4 S

12.219 .0

0 .0

129.7

258.6

2,780

1 724 .9

94.50

81.5

7.0

11.22.80

5.40

22.10

1 . 75

20.46

0.00

8.60

3.86

51.37

38.67

4.57

283.7

65.8

1.097

788,7BO



Basis o f Est imates

Days o f v p ~ L j ' ~ J . UTota l (Clean e t l (000)

Dai ly P roduc t ion (Clean s t l

Approx. a t /worker -day

Cost bas ie

A. Direot Operat ing C os ts

1. Labor Sa la r ied

2. Labor Hourly

.. 3. Benef i t s - Sa l a r i ed

4. Benef i t s -

Power

5

6... 7.

.. 8.

9.10.

11.

FICA , Unemployment Taxes

Workmen . Compensation Insurance

Black Lung Compensation Insuranca

Welfare - Hourly

Welfare - Tonnage2... 13.

.. 14.

15.

, Safe ty Incen t ives

Accid en t Cost .

16.17.

18 .

Reclamation Fee

Federa l Black Lung Fee

Other C os ts

Tota l

B. Other Cash C os ts

1. Overhead

2. R oyal t ie l l

3. Miscel laneous Taxes

4. Equipment Leas ing Costs

5 . In tere l l t Expense

6. Misce l laneous Income

Total

C. Other Costs

1 Deprec ia t ion

2. Amort i :za t ion o f Development

3. Deple t ion

Tota l

Tota l Coat o f Mining

Fixed Dol la rs Per Year

C os ts


Base Year 1998

Adj. Time St . Data

240

504.458

2,102

9.550

Dol la rs 1000) /st

1,000.000

3,500.000

46.000

900.000

1,513.3 14

1,800.000

340.000

400.000

115 000

340.000

300.000

711. no150.000

250.000

200.000

15.669252.229

0.000

11,954.062

500.000

302.675

0.000

600.000

500.000

0.000

1,902.675

550.000

0.000

0.000

550.000

14,406.137

1.982

6.938

0.091

1.784

3.000

3.568

0.614

0.793

0.347

0.674

0.595

1.411

0.297

0.496

0.396

0.150

0.500

0.000

23.691

0.991

0.600

0.000

1 189

0.991

0.000

3.712

1.090

0.000

0.000

1.090

29.559

upt ime by 15 Minutes

240

188.780

3,281

15.901

Dol la rs (000) / s t

1,000 .000

3,290.000

46.000

846.000

2,366.340

1,800.000

340.000

400.000

115.000

340.000

282.000

1,112 .968

150.000250.000

200.000

119.311394.390

0.000

13,111. 016

500.000

413.268

0.000

600.000

525.000

0.0002,0911.268

585.714

0.000

0.000

585.714

15,194.998

1.268

4.171

0.058

1.073

3.000

2.282

0.4131

0.507

0.222

0 ~ 3 10.358

1.4.11

0.190

0.311

0.254

0.150

0.500

0.000

16.622

0.634

0.600

0.000

0.761

0.666

0.000

2.660

0.743

0.000

0.000

0.143

20.025

5



16

ITEM IDENTIFICATION

Minutes Per Sh i f t

Trave l 1 i _

Lunch T i _

Serv ice ' l1i_


Downtime

Miner

S.C.

B41t

Bol ter

Feeder

C/PTM

Power

Timber , Rai l

Condi t ion .

Saf e t y

Model Adjust Delay .

o t h e r

Tota l Downtime

Remaining Uptime

Unit Sbi f t_ /Year

Cubic Fee t / P l ace

Oena i ty

Raw To n a/P laceRaw Tons/S.C.

No. S.C./P1ace

R ej ec t

Clean TOnls/S.C.

SECTION 1 SECTION 2

480.0 480.0

60.0 62.030.0 30.0

0.0 0.0390.0 388.0

0 .0 0.0

15 .0 10 .2

21.0 22.24.8 5 .0

3.0 3.8

30.5 31.01 .8 1 .0

2 .0 2.51

5 .0 5 .8

11 .0 8 .5

20.0 18.50 .0 0.0

114.1 10B. iI

275.9 279.1

502 480

1 ,710 .7 1,731. 1

94.50 94.50

SO.II 81.8

7 0 1 0

11.5 11 .7

22 80 22.80

5.40 5 .40




SECTION 3 SECTION 4 SECTION 5 SECTION 6 TOTAL/ViTO V

480.0 480.0 480.0 480.0 480.0

65.0 511. 0 62.0 64.0 61. 7

30.0 30.0 30.0 30.0 30.0

0.0 0 .0 0 .0 0.0 0.0

385.0 392 0 388.0 386.0 388.3

0 .0 0.0 0.0 0.0 0.0

12.0 15 .5 12 .0 18.2 13.1

28.0 18.5 21. 0 19.5 21. 9

6.0 5.9 8 .0 4.6 5 .1

4.2 3 .6 5 .0 6.8 4.3

22.0 28.8 35.0 3B.O 30.2

2 .0 2.5 2.8 1 .9 2 .0

3.0 5 .0 5 .3 3.0 3.5

Ii a 2.5 4.2 2.8 4.5

iI.8 13.0 10 .0 8.1 10 .2

17 .8 22.0 15.0 U . S 19.0

0 .0 0.0 0.0 0.0 0.0

110.11 117.3 118.3 122.4 114.8

274.2 274.7 269.7 263.6 273.4

536 528 354 380 2,780

1,B51.4 1 ,880 .0 1 ,642 .8 1 ,409 .4 1 ,724 .9

94.50 94.50 94.50 514.50 514.50

81.11 88.8 11.6 66.6 81.5

7.0 7 0 7 0 7 .0 7 .0

12.5 12.7 11.1 9.5 11 .6

22.BO 22.110 22.80 22.80 22.80

5 40 5 40 5.40 5 .40 5 40

Place i_

Mining

Maneuvering

S.C. Cbange

Gall T,u t Safe ty

Vent i l a t ion Poats

r_

Tota l Place Time

Roof Bol t ing Place Tima

Places /Uni t Sbi f t

- Clean COdl

Annual Produet ion , s t

22.52

1 . 73

20 68

0.008 60

3.48

57.01

311.80

4.840

302.065.7

1 . 095

151,603

22.19

1 . 75

20. il0

0.00

8.60

3.72

57.17

40.20

4.832

305.2

65.6

1 093

146,490

24.45

1 .88

25 20

0.00

II 60

3.83

63.96

39 50

4.287

290 5

63.6

1.059

155,696

24.75

1 .90

19.44

0.00

8.60

4.68

59.37

38.75

4.627

311.3

69.3

1.155

161,531

21.62

1 .66

16.50

0.00

8.60

3.18

51.57

36 80

5.230

313.469.7

1 .162

110,946

18.55

1 . 43

18.00

0.00

11.60

4.11

50.69

37.00

5.200

267.460. iI

1 014

101,596

22 70

1 . 15

20 46

0.00

8.60

3 .86

57.37

38.67

4.83

300.0

65.S

1.097

833,867



Bas i s o f Est imates

Days o f Operat ion

Tota l P roduc t ion (Clean at) (000)

Dai ly P roduc t ion (Clean Bt)

Approx. a t /worker -day

Cost ba .s is

A. Direc t Opar t ing Costa

.. 1. Labor -

.. 2 L a b o r

,. 3. Benef i ta

,. 4. Benef i t s -

5.,. 6.

7 Power

' 8 FIC

,. g. Workmen' a Inaurance

,. 10. Blll.ck Lung Inau rance

,. 11. Welfare -

1 2 . Welf a r e - Tonnage

.. 13.

.. 14. • Safe ty Incen t ives

,. 15. Acciden t Costs

16. Reclamation Fee17. Federa l Black Lung Fee

,. 18. Other Costs

Total

B. Other Cash Costs

1. Overbead

2. Roya l t ie s

3. Misce l laneous Taxes

,. 4. Leasing Coats,. 5. ExpenSE

.. 6. Misce l laneous Income

Total

C. Otber Costs

.. 1. Deprec ia t ion

2. Amort izat ion o f Development Costs

3. Deple t ion

Tota l

Tota l Cost o f Mining

,. Fixed Dol la rs Per Year


Base Year 1988

Adj. Tima St. Data

240

504.458

2,102

9.550

Dol la rs (000)

1,000.000

3,5()O.000

46.000

900.000

1,513.374

1,800 000

340.000

400.000

115.000

340.000

300.000

711 790

150.000

250.000

200.000

75.669252.229

0.000

11,954.062

500.000

302.675

0.000

600.000

500.000

0.000

1,902.675

550.000

0.000

0.000

550.000

14,406.137

$/ s t

1.982

6.938

0.091

1.784

3.000

3.568

0.674

0.793

0.341

0.674

0.595

1.411

0.297

0.496

0.396

0.1500.500

0.000

23.697

0.991

0.600

0.000

1.189

0.991

0.000

3.772

1.0900.000

0.000

1 090

28.559


240

833.861

3,414

16.704

Dol1ars (000)

1,000.000

3,290.000

46.000

846.000

2,501.601

1,800.000

340.000

400.000

175.000

340.000

282.000

1.176 .586

150.000

250.000

200.000

125.081416. l34

0.000

13.339.201

500.000

500.321

0.000

600.000

525.000

0.000

2.125.321

585.114

0.000

0.000585.714

16,050.236

$ / s t

1.199

3.945

0.055

1.015

3.000

2.159

0.408

0.480

0.210

0.408

0.338

1 4110.1110

0.300

0.240

0.1500.500

0.000

15.997

0.600

0.6000.000

0.720

0.630

0.000

2.549

0.702

0.000

0.0000.102

19.248

7



18

ITEM IDENTIFICATION

Minutea Per Shif t

Travel Time

Lunch T i _

Service T i _

Remaining Operating Time

Downtime

Miner

S.C.

BeltBolter 'Feeder

C/PTMPower

Timber , Rai l

Condit ioneSafetyModel Adjust Delay .

Other' rota l DowntimeRemaining Uptime

Unit Shifta /Year

Cubic Feet/PlaceDensity

Raw Tonll/l'laceRaw Tona/S.C.

No. S.C./PlaceReject ,

Clean 'lana/S.C.

Place TimeMining

Maneuvering

S.C. Change

Gaa 'reat " SafetyVent i la t ion , POGtG

Tram1'ota1 Place 1'ime

Roof Eolting Place Time

PlaceG/Unit Shif t

- Clean Coal

Tonlll/Minute

Annual Produotion,at

SECTION 1

480.0

60.0

30.00.0390.0

22.8

15.021.0

4.83.0

30.51.8

2.05.0

18.020.0

0.0143.9

246.1

502

1,710.794.50

90.87.0

11.522.80

5.40

18.01

1.1320.68

0.00

8.603.48

52.51

38 80

4.687

292.571.3

1.188

146,821

SECTION

480.062.0

30.0o 0388.0

25.0

10.222.25.03.8

31.0

1.02 9

5.815.518.5

0.0140.9247.1

480

1,731. 7

94.50

111.8

7.0

11.122.80

5.40

111.23

1. 7520.90

0.0011.60

3.7253.21

40.20

4.644

293.3

71.21.191

140,806

2

KINE PRODUCTION MODEL


IMPROVED UPTIME BY 60 MINUTES FOR 25'11

SECTION 3

480.0

65.0

30.00.0

385.0

18.012.028.0

6.04.2

22.02.03.06.0

16.811.8

0.0135.8

249.2

536

1,857.494.50

81.117.0

12.522.80

5.40

19.561.88

25.20

0.0011.60

3.8359.07

3 1.50

4.219

285.1168.8

1.147

153,214

SECTION 4

480.0

58.0

30.00.0

392.0

29.4

15.518.5

5.93.6

28.82.55.02.5

20.022.0

0.0153.7238.3

528

1,980.094.50

88.81.0

12.122.80

5.40

19.801. 90

19.014

0.0011.60

4.6854.42

3B."I5

4.379

300.315.6

1.260

158,554

SECTION 5

480.0

62.030.0

0.0388.0

10.012.021. 0

8.05.0

35.02.85.34.2

11.015.0

0.0135.3

252.7

354

1,642.11

94.50

77.6

1.011.1

22.805.40

17.30

1 6616.50

0.008.603. lS

47.24

36.80

5.349

320.576.1

1. 268

113 469

EFFICIENcY

SECTION 6

480.0

64.0

30.00.0

386.0

30.0

19.219.5

4.66.9

38.01.93.02.8

15.119.5

0.0159.4226.6

3BD

1,409.494.50

66.61.09.5

22.805.40

14.84

1 4318.00

0.008.60

4.11

46. l8

37.00

4.824

248 0

65.1

1.094

l4,233

TOTAL/WTD

480.0

61. 7

30.00.0

388.3

22.913.721. 9

5.74.3

30.22.03.54.5

17.219.0

0.0144.7

243.6

2,780

1,724.994.50

111.51.0

11 .622.80

5.40

18.16

1.1520.46

0.008.60

3.8652.83

38.67

4 67

290.371.5

1.191

807,102

AV




Days o f Operat ionTota l P roduc t ion (Clean at) (000)

Daily Produc t ion (Clean a t )Approx. s t /worker -day

Cost b a s i .

A. Direc t Operat ing co s t s

• 1 . Labor - Sa la r ied

• 2... 3.

• 4.5.

.. 6.

• 1. Po .... r8. F I C A ' Unemployment Taxes

.. 9. Workmen s Compensation Insurance

• 10. Black Insurance

11.12 . Welfare - Tonnage

• 13. Expensea14. , Safe ty Incen t ives

.. 15 Accident Co s t .16. Reclamation Fee17. Federal Black Lung Fee

18. Other CostsTota l

B. Other Cash Costa

1 . Overhead

2. Royal t i e .

3. Miscel laneous Taxes

• 4. Equipment Leasing Costs

• 5. I n t e r e a t Expense

• 6. Miscel laneous Income

Tota l

C. Other Costa.. 1 . Deprec ia t ion

2. Amort izat ion o f Development Coate

3. Deplet ion

Tota l


• Fixed Dol la r s Per Year


Base Year 1988

Adj. Time s t . Data

240

504.458

2,1029.550

Dol la rs (000)

1,000.000

3,500.000

46.000

900.000

1,513.374

1,800.000

340.000

400.000

175.000

340.000

300.000

711.790

150.000

250.000

200.00075.669

252.229

0.000

11,954.062

500.000

302 615

0.000

600.000

500.000

0.000

1,902.615

550.000

0.000

0.000

550.000

14,406.131

/ s t

1 . 982

6.938

0.091

1.784

3.000

3.568

0.614

0.793

0.347

0.674

0.595

1.411

0.297

0.496

0.3960.150

0.500

0.000

23.691

O. In0.600

0.000

1.189

O. In0.000

3.712

1.090

0.000

0.000

1.090

211.559

Uptime

For 25

60 Minutes

240

1107.102

3,36316.168

Dollars (000)

1,000 .000

3,290.000

46.000

8Ui.000

2,421.306

1,800 .000

340.000

400.000

175.000

340.000

2112.000

1,138.821150.000

250.000

200.000121.066

403.551

0.000

13,203.743

500.000

484.262

0.000

600.000

525.000

0.000

2,109.262

585.114

0.000

0.000

585.714

IS, a98. 719

$/81;

1.239

4.016

0.057

1. 048

3.000

2.230

0.421

0.496

0.217

0.421

0.349

1.4110.186

0.310

0.2480.150

0.500

0.000

16.359

0.620

0.600

0.000

0.743

0.650

0.000

2.613

0.726

a 000

0.000

0 726

19.699

19



20

MINE PRODUCTION HODEL

BY CONTINUOUS MINER SECTIONIMPROVE UPTIME BY 75 MINUTES FOR 25 EFFICIENCY

ITEM IDENTIFICATION SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 TOTAL/WTD

Minutea Per Shif t 48 0 . 0 480.0 480.0 480.0 480 . 0 480.0 48 0 . 0

Travel Time 60.0 62 . 0 65.0 58 . 0 62.0 64.0 61. 7

Lunch Time 30.0 30.0 30 . 0 30.0 30 . 0 30.0 30.0

Serv ice TilDB 0.0 0.0 0.0 0.0 0 .0 0 . 0 0.0Remaining Operat ing Time 390 . a 388.0 385.0 392.0 388.0 386.0 38 8 . 3

DowntilDBMiner 12 . 8 15.0 8 . 0 19.4 0 .0 20.0 12 . 9

S.C. 15 . 0 10.2 12 . 0 15.5 12 . 0 18.2 13 . 7

Bel t 21.0 22.2 28 . 0 18.5 21 . 0 19.5 21. 9

Bo l t e r 4 . 8 5.0 6.0 5.9 8.0 4.6 5.7

Feeder 3 . 0 3.8 4.2 3 .6 5 . 0 6.8 4 . 3

C PTM 30 5 31.0 22.0 28.8 35.0 38.0 30.2

Power 1 . 8 1 .0 2 . 0 2.5 2 . 8 1 .9 2 .0

Timber Rail 2.0 2 .9 3 . 0 5 . 0 5.3 3.0 3.5

Condi t iona 5 0 5.8 6 . 0 2 . 5 4 . 2 2.8 4.5

Safe ty 13.0 10 .5 11.8 15.0 12 0 10.1 12 . 2

Model Adjullt De1aya 20 . 0 18.5 17 .8 22.0 15.0 19 .5 19 .0

o ther 0 . 0 0.0 0.0 0.0 0 .0 0.0 0 .0

Tota l Downtime 128.9 125.9 120.8 138.7 120.3 144.4 129.7

Remaining UptilDB 261.1 262.1 264.2 253.3 267.7 241. 6 258.6

Unit Shi f ta /Year

CUbic Feet /P1ace

Denai ty

Raw Tona/P1ace

Raw Tona/S.C.

No . S.C. /Place

Rejec t ..

Clean Tona/S.C.

Place Ti ....Mining

Maneuvering

S . C. Change

Gaa Teat Safe ty

Vent i l a t ion Poat .

Tram

Tota l P lace Time


P1acea/Uni t Shif t


Tona/unit Shif t

Tona/Hour

Tona/Minute

Annual Product ion at

502

1 710.7

94.50

80 . 87.0

11 .5

22 . 80

5 . 40

18.01

1.7320 . 68

0.008.60

3 . 4852 . 51

38.80

4 . 973

310.371.3

1.188

155 776

480

1 731 .7

94.50

81.8

7 . 0

11. 722.80

5.40

18.23

1 . 75

20.90

0.00

8 . 60

3 . 72

53 . 21

40 . 20

4 . 926

311.271 . 2

1.187

14 9 354

536

1 857.4

94.50

87.8

7.0

12.5

22.80

5.40

19.56

1 . 88

25.20

0 . 00

8.60

3.8359.07

39.50

4.473

303.1

68.8

1.147

162 436

528

1 880 .0

94.50

88.8

7.0

12 .7

22.80

5 . 40

19.80

1 . 90

19.44

0.008 . 60

4.6854 . 42

38 . 75

4.655

319.2

75.6

1.260

168 534

354

1 642 .8

94.50

77.6

7.0

11.1

22.80

5.40

17.30

1.66

16.50

0 . 00

8 . 60

3.1847.24

36 . 80

5.667

339.6

76.1

1 .268

120 204

380

1 409 . 494.50

66.6

7.0

9.522 . 80

5.40

14.841 . 43

18 . 00

0.0060

4 . 11

46.98

37 . 00

5.143

264 . 465.7

1. 094

100 471

2 780

1 724 .9

94.50

81.57 .0

11. 622.80

5 . 40

18.16

1 . 75

20.46

0.008 . 60

3.86

52.83

38.67

4.96

30 8 . 271.5

1.191

856 775

AV



Bas i s o f Es t ima tes

Days of Operat ion

Tota l P roduc t ion (Clean a t (000)

Daily Produot ion (Clean at)Approx. a t /worker -day

Coat .basis

A. Direc t.. 1

.. 2.

.. 3.

4.5.

,. 6.

7.

8

9.... 10.

l12.13.

14 .

15 .16

17.

' 18.

Ben e f i t .

Suppl i e s

Suppl i e s

Power

- Hourly

Operat ing

- Maintenance

FICA Unemployment TaxesWorkmen's Compensation Insurance

Blaok Lung InsuranoeWelfare

Welfare Tonnage

Safe ty Expenses

Produc t ion , Safe ty Inoent ives

Aocident Cost .Reclamation Fee


Other Costs

Tota l

B. Other Cash Costa

1 Overhead

2.

3 . Taxes

'4. Equipment Leasing Costs

'5. I n t e r e s t Expense

6. Miscel laneous Income

Tota l

C. Other Costs

1. Deprec ia t ion


3. Deplet ion

Total


Fixed Dol la r s Per Year


Base Year 198a

Adj Time S t Data

240

504.458

2,1029.550


1,000.000

3,500.000

46.000

900.000

1,513.374

1,800.000

340.000

400.000

175 000

340.000

300.000

7 1 1 7 ~ 0150.000

250.000

200.00075.669

252.229

a 000

11,954.062

500.000

302.675

0.000

600.000

500.000

0.000

1,902.675

550.000

0.000

0.000

550.000

14,406.737

1.982

6.938

0 091

1.7843.000

3.568

0.614

0.193

0.347

0.674

0.595

1.4110.291

0.496

0.3960.1500.500

0.00023.691

0.991

0.600

0.000

1.189

0.991

0.000

3.712

1.090

0.0000.000

1.090

28.559

Uptime

For 25%

240

856.775

3,57017.163

Dol la rs (000)

1,000 .000

3,290.000

46.000

846.000

2,570.325

1,800.000

340.000

400.000

115.000

340.000

282.000

1,208.909

150.000

250.000

200.000128.517

428.388

0.000

13,455.138

500.000

514. 065

0.000

600.000

525.000

0.000

2,13 L065

585.714

0.000

0.000

585.714

16,179. He

/ s t

1.167

3 840

0.054

0.987

3.000

2.101

0.397

0.467

a 204

0.397

0.329

1.411

0 . l i5

0.292

0.2330.150

0.500

0.000

15.704

0.584

0.600

0.0000.100

0.613

0.000

2.497

0.6114

0.000

0.000

0.684

18.885

21



22

ITEM IDENTIFICATION

Minutes Per Sh i f t

Trave l Time

Lunch T i _

Serv ice T i _Remaining Operat ing Time

Downtime

Miner

S.C.

B el t

Bo l t e r

Feeder

C/p' M

Power

Timber , Rai l

Condi t iona

Delays

Other

Tota l Downtime

Remaining Uptime

Unit Shi f t s /Year

Cubic Fee t / P l ace

DenSity

Raw Tonll/Place

Raw Tona/S.C.

Ho. S.C. /Place

Rejec t ..

Clean Tona ?. C.

Place Time

Mininq

Maneuve;r:lnq

S.C. Change

Ga. T e . t ,

Vent i l a t ion "Tram

Tota l Place Time

Roof Bol t inq Place Time

Plllcell /Unit Sh i f t

Tona/UnitTOI . . . /Bour

Tons/Minut .

- Clean Co .

Annual Product ion ,s t

SECTION

480.0

60.0

30.0

0 .0390 0

0.0

15 .0

21.

4.8

3 .0

30 5

1 .8

2.0

5 .0

11 .0

20.0

0 .0

114.1

215.9

502

1 ,710 .7

94.50

BO.B7 .0

11.5

22.80

5.40

IB.01

1 . 73

20.68

0.00

8.60

3.48

52.51

38.80

5.255

327. 971. 3

1.188

164,606

1 SECTION

480.0

62.0

30.0

0.0

388.0

0.0

10.2

22.2

5.0

3 .8

31.0

1 .0

2 .9

5 8

8 .5

18.5

0.0

108.9

279.1

480

1 ,731 . 714 .50

Sl.B7.0

11 .7

22 BO

5 .40

18.23

1. 75

20.90

0.00

8.60

3.72

53.21

40.20

5.245

331.3

71.2

1.187

159,041



IMPROVE UPTIME BY 90 MINUTES FOR 25% EFFICIENCY

2 SECTION

480.0

65.0

30.0

0.0385.0

0.0

12.0

28.0

6.0

4.2

22 .0

2 .0

3 .0

6.0

9.8

17 .8

0.0

110.8

274.2

536

I ,B57 .

94 50

B7.8

7 .0

12 .5

22.80

5.40

19.56

1.8B

25.20

0.00

8.60

3 .83

59.07

39.50

4.642

314.5

68.S

1.147

168,584

: SECTION

480. a58.0

30.0

0 .0392.0

a.o15.5

18.5

5 .9

3 .6

28 .8

2 5

5.0

2 .5

13 .0

22.0

0.0

111.3

274.7

528

1 .880 .0

94.50

IIB.B7.0

12 .7

22.BO

5 .40

19.80

1 .90

U .44

0.00

8.60

4.68

54.42

38.75

5.048

346.275.6

1.260

182,773

4 SECTION

480.0

62.0

30.0

0 .0388.0

0.0

12 .0

21.0

8 .0

5 .0

35.0

2.8

5 .3

4.2

10 .0

15 .0

0 .0

118.3

269.1

354

1.642.11

94.50

77.6

7 a11.1

22.80

5 . 0

17.30

1 . 66

16.50

0.00

8.60

3.18

47.24

36.80

5.709

342.1

16 .1

1.268

121,102

5 SECTION

480.0

64.0

30.0

0 .0386.0

0.0

18.219 .5

4,.6

6.8

31LOlog

3.0

2 8

S.l19.5

0.0

122.4

263.6

380

1 ,409 .4

94.50

66.6

7.0

9.5

22.80

5.40

14.84

1. 43

18.00

0.00

8 60

4.1146.98

37.00

5.611

288.565.7

1 .094

109,620

6 TOTAL/WTD

480.0

61.1

30 a0.0

388.3

0.0

13 .7

21 .9

5 7

I I30 2

2 .0

3.5

4.5

10 .2

I. a0 .0

114.11

273.4

2 ,780

1 ,724 .9

94 50

111.5

7 .0

11 .6

22.805./10

111.16

1 . 75

20 . 6

0.00

8 .60

3 .86

52 83

38.67

5.24

325.8

71.5

1 191

905,725

AV



Basis of Estimatea

Days of OperationTotal Produotion (Clean at) (000)

Daily Produotion (Clean at)

Approx. at/worker-day

Cost basia

A. Direot uner .u;>.na

. l2.

:3.. 4.

5.

6.

1.8.

.. 9.

*.. 11.

12... 13.. 14.,. 15.

16.11.

,. 18.

Benef i t s Hourly- Operating- Maintenanoe

PowerFICA , Unemployment taxesWorkmen's Compensation InsuranoeBlack InsuranceWelfare -

Welfare - Tonnage

Safety ExpensesProduction , Safety InoentivesAcoident CostaReolamation Fe .

Federal Black Lung FeeOther Costs

Total

B. Other Cash Costs

.

c.

l OVerhead

2. Royalt ies3. Miscellaneous Taxes4. Equipment Leasing Costs5. Interes t Expense6. Miscellaneous Income

Total

Other Costs1. Depreciation2. Amortization of Development costa

3. DepletionTotal

Total Coat of Mining

Fixed Dollars Per Year


Base Year 1988

Adj. Time St . Data

240

504 1158

2,102

9.550

Dollars 000)

1,000.0003,500.000

46. 000

900.0001,513.3141,800.000

340.000400.000175.000340.000300.000711.190150.000250.000200.000

15.6611

252.2290.000

11,954.062

500.000

302.6750.000

600.000500.000

0.0001,902.615

550.0000.000

0.000550.000

14,406.137

/_t

1.9826.9380.0911.1843.000

3.5680.674O.H

0.3410.614

0.5951.4110.2910.4960.3960.1500.5000.000

23.697

0.9910.6000.0001.1890.9910.000

3.172

1.0900.000

0.0001.090

28.559

Optime by 110 MinutesFor 25\ Efficiency

240

905.1253,114

18.144

Dol l an (000)

1,000.0003,290.000

46.000846.000

2,111.115

1,800.000340.000400.000115.000

340.000282.000

1,211.918150.000250.000200.000135.859452.863

0.00013,102.814

500.000543 435

0.000600.000525.000

0.0002,168.435

585.1140.000

0.000585.114

16.457.024

/_t

1.1043.6320.0510.9343.000

1.IIS70.375

0.442D.H3D.37S

0.3111.4110.1660.2160.2210.1500.500

0.00015.129

0.5520.6000.0000.6620.5800.0002.394

0.6410.000

a 0000.641

18.170

23



24



IMPROVED UPTIME BY 60 MINUTES FOR SO ll EFFICIENCY

ITEM IDENTIFICATION SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 TOTAL WTD lW

Minute.. Per Shif t 480.0 480.0 480.0 480.0 480.0 480.0 480.0

Travel Time 60.0 62.0 65.0 58.0 62.0 64.0 61. 7

Lunch Time 30.0 30.0 30.0 30.0 30.0 30.0 30.0

Service Time 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Remaining Operating Time 390.0 388.0 385.0 392.0 388.0 386.0 388.3

Downtime

Miner 22.8 25.0 18.0 29.4 10.0 30.0 22.9

S.C. 15.0 10.2 12.0 15 .5 12.0 18.2 13 .7

Belt 21.0 22.2 21l.0 18.5 21.0 111.5 21.9

Bolter 4.8 5.0 6.0 5.9 8.0 4.6 5 .7

Feeder 3 .0 3.B 4.2 3 .6 5.0 6.8 4.3

C/PTM 30.5 31.0 22.0 28.8 35.0 38.0 30.2

Power 1.8 1 .0 2.0 2.5 2.8 1 .9 2.0

Timber i Rail 2.0 2.9 3 .0 5 .0 5.3 3.0 3.5

CondH:ions 5.0 5.B 6.0 2 .5 4.2 2 .8 4.5

18.0 15 .5 16.8 20.0 17.0 15 .1 11 .2

Delay . 20.0 18.5 1.7.8 22 0 15.0 19.5 19 .0

Other 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Total Downti_ 143.9 140.9 135.8 153.7 135.3 159.4 144.1

Remaining Uptime 246.1 247.1 249.2 238.3 252.7 226.6 243.6

Unit Shifta /Year

Cubic Feet/PlaceDensi tyRaw ' fona/PlaceRaw Tons/S.C.

No. S.C./Place,"rona/S.C.

Place rimaMining

ManeuveringS.C. Chang'Galli T• • & SafetyVent i la t ion i PostsTram

Total Place Time


Places/Unit Shif t

Productivity Clean Coal

Tona/Unit Shif t

Tonll/Hour

Tons/Minute

Annual Production,st

502

1 710.7

94.50

80.8

7.0

11 .522.80

5.40

15.01

1 . 73

20.68

o 00

8.60

3.4849.50

38.80

4.971

310.275 6

1.261

155,731

480

1,131 . /

94.50

81. 87.0

11. /

22.80

5.40

15.20

1 . 75

20.90

0.008.60

3.72

50.17

40.20

4.925

311.115.5

1 . 259

149,336

536

1,851.494.50

87.8

7.0

12.522.80

5.40

16.30

1.88

25.20

0.00

8.60

3.11355.81

39.50

4.465

302.5

72.S

1.214

162,163

528

1 880 .0

94.50

88.8

7.0

12.7

22.80

5.40

16.50

1. 90

19.44

0.008.60

4.68

51.12

38.75

4.662

319.780.5

1.341

168,181

354

1 642 .8

94.50

77.67.0

11.1

22.80

5.40

14.C2

1. 66

16.50

0.00

B.60

3.18

44.36

36.80

5.697

341.4

81.1

1.351

120,844

380

1 409 .4

I4.50

66.6

1.0

9.522.80

5.40

12.37

1 .4318.00

0.00

8.60

4.11

44.50

37.00

5.092

261. 869.3

1.155

99,410

2,180

1 724.9

94.50

81.5

7.0

11.6

22.80

5.40

15.14

1 .15

20.46

0.00

8.60

3.86

49.80

38.67

4. l5

308.0

75.8

1.264

856,331



Bas i s of Es t ima tes

Day. of Operat ion

Tota l P roduc t ion (Clean .t (000)

Daily Produc t ion (Clean s t )Approx. a t /worker -day

Cost b a s i .

A. Direc t Opera t ing Costs

• 1. Labor - Sa la r ied

• 2. Labor - Hourly

• 3. Ben e f i t . - Sa la r ied

• 4 . Benef i t s - Hourly5 . Supp1ie8 - Opera t ing

6. Suppl i e s - Maintenance

7 Power

8 . FICA Unemployment Taxes

• 9. Workmen'. Compensation In8urance

• 10. Black Lung Compensat ion Insurance

11. Welfare - Hourly

12 . Welfare - Tonnage

• 13. Safe ty Expenses

• 14. Produc t ion Safe ty Incen t ives

• 15. Accident Cost .

16. Recl m£tion Fee


• 18. Other Cost8Tota l

B .

•

••

C .

•

Other Cash Cost8

1. Overhead

2. Roya l t ie s


4 . Equipment Leaaing Costs

5. I n t e r e s t Expen.e

6 . Misce l laneous Income

Total

Other Costa1. Deprec ia t ion


3 . Deplet ion

Total


• Fixed Dol la r s Per Year


Base Year 1988

Adj . Time St . Data

240

504.458

2,1029 . 550

Dol la rs (000)

1,000.000

3,500.000

46.000

900.000

1,513 . 374

1,800.000

34 0 . 000

400.000

17 5 . 000

340.000

300.000

711.790

15 0 . 000

250.000

20 0 . 000

75 . 669

252.229

0 . 000

ll, 954 . 062

500.000

30 2 . 675

0 . 000

600 . 000

50 0 . 000

0.000

1,902.675

550.000

0 . 000

0 .000550.000

14,406.737

/8 t

1. 982

6.938

0.091

1 . 784

3 . 000

3.568

0.674

0.793

0.347

0.674

0.595

1.411

0.297

0.496

0.3960.150

0 . 500

0.000

23.697

0 . 991

0.600

0.000

1 . 189

0 . 991

0 . 000

3.772

1 . 090

0.000

0.0001.090

28 . 559


For 50 ' Ef f ic iency

240

856.331

3,56817.154

Dol la rs (000)

1,000 . 000

3,290.000

46 . 000

84 6 . 000

2,568.993

1,800 . 000

340.000

400.000

175.000

340.000

28 2 . 000

1,208 .283

150.000

250.000

200.00012 8 . 450

42 8 . 166

0.000

13 452.891

500.000

513.799

0.000

600.000525.000

0.000

2,138.799

585.714

0.000

0.000585.714

16,177 . 404

/ s t

1.168

3.842

0.054

0.988

3.000

2.102

0.397

0.467

0.204

0.397

0.329

1 . 4 l l

0.175

0.292

0.234

0.150

0.500

0.000

15.710

0.584

0.600

0.000

0.701

0.613

0 . 000

2 . 498

0 . 684

0.000

0.0000.684

18 . 892

5



26

ITEM IDENTIFICATION

Minutes Per Shif t

Travel T i _

Lunch T i _

Service Tima


Downtime

Miner

S.C.

Belt

Bolter

Feeder

C/PTM

Power

TimberRail

Condit ionsSafetyMod . 1 Adjust Delay .

OtherTotal Downtime

Remaining Uptime

Unit Shlfta/Year


Raw Tona/Place

Raw Tona/S.C.

No. S.C./P1aceReject ,

Clean Tona/S.C.

Place Time

tUning

Maneuvering

S.C. Change

Gaa TeatVent i la t ion

Tr ....

Total Place Time


Placea/Uni t Shif t

Produc t iv i ty - Clean Coal

Tona/Unit Shif t

Tona/Hour

Tona/Minute

Annual Production,at

SECTION

480.0

60.0

30.0

0.0390.0

12 8

15.021. 0

4.83.0

30.51.82.05.0

13.020.0

0.0128.9261.1

502

1,710.794.50

&0.8

1.0

11.522.80

5.40

15.01

1.1320.68

0.00

8.603.48

n 5 0

38.80

5.274

329.175.6

1 261

165,223

1 SECTlON

480.0

62.0

30.00.0

388.0

15.010.222.2

5.03.8

31.01.02

5.810.518.5

0.0125.9262.1

480

1,731.794.50

81.87.0

11.722.80

5.40

15.20

1 . IS

20.90

0.008.60

3.7250.11

40.20

5.224

330.075.5

1.259

158,401



IMPROVE UPTIME BY 15 MINUTES FOR 50% EFFICIENCY

2 SECTION

4800

65.0

30.00.0

385.0

8.0

12.028.0

fLO

4.222.0

2.03.06.0

11.&

11.&

0.0120.8264.2

536

1,851.494.50

87.81.0

12.522.&0

5.40

16.301 . 88

25.20

0.00

8.603.83

55.81

39.50

4.734

320.&

72.&

1.214

171,924

3 SECTION

480.058.0

30 0

0.0392.0

1 L4

15.518.5

5.93 .6

28.82.55.02.5

15.022.0

0.0138.7

253.3

52&

1,880.094.50

88.8

7.0

12.7

22.80

5.40

16.50

1 . 90

19.114

0.00

8.60

4.6&

51.12

38.15

4.955

339.1180.5

1.341

179,412

4 SECTION

480.0

62.0

30.0

0.0388.0

0.012.021.08 .05 .0

35.02.8

5 .34.2

12.015.0

0.0120.326"/.7

354

1,642.894.50

7 1.6

7 0

11.122.&0

5.40

14 42

1 66

16.500.008.603.19

44.36

36.80

6.035

361. 6

81 1

1.351

128,017

5 SECTION

480.0

64.0

30.0

0.0386.0

20.0

18.219.5

4.66.8

38.01.93.02 &

10.119.5

0.0144.4

241. 6

380

1,409.494.50

6Ii.6

7.09.5

22.80

5.40

12.3 1

1.4318.00

0.008.60

4.11

44.50

3 1.00

5.429

279.1

69.3

1.155

106,055

Ii TOTAL/WTD

480.0

61. I30.0

0.0388 3

12.913.121. 9

5.14.3

30.22.0

3.54.5

12.21 9 0

o 0129. I258.6

2,180

1 ,124 .994.50

&1.5

7.0

11. 622.80

5.40

15.14

1 75

20.460.008.60

3.11649.80

38.61

5.26

321.075.8

1.264

909.032

AV



Basis of Estimates

of OperationProduct ion (Clean lit) 000)

Daily Produotion (Clean at)Approx. s t /worker-day

Cost basis

A. Direot1 . Labor -

'

2. Labor - Hourly

3. Benef i t . - Salar ied

4. Benef i t .

5. Suppl ies -

• 6. Suppl ies -

• 7. Power8. FICA

9.• 10.

• I I .12.

InsuranceInsurance

13.

• 14' 15.

Welfare Tonnage

Safety Expenses

Product ion SafetyAccident CostsRealam tioD Fe .

Federal Black Lung

Other Costs

Incentives

16.

17.

18Total

B. Other Cash Costs

• I . Overhead

2. Royalt ies3. Misoellaneous Taxes

Fee


5. In t e re s t Expense

' 6. Miscellaneous Income

Total

C. Other Costs' 1. Depreciat ion

2. Amort izat ion of Development Costs

3. Deplet ionTotal




Base Year 1988

Adj. Time St. Data

240

504.458

2,1029.550

Dollars/OOO) / s t

1,000.0003,500.000

46.000

900.000

1,513.3741,800.000

340.000

400.000

175.000

340.000

300.000

711.790150.000

250.000200.000

75.669252.229

0.000

11,954.062

500.000

302.675

0.000

600.000

500.0000.000

1,902.675

550.000

0.000

0.000550.000

14,406.737

1.982

6.938

O. 091

1.784

3.000

3.5680.674

0.793

0.347

0.674

0.595

1.4110.297

0.4960.396

0.150

0.500

0.000

23.697

0.9910.600

0.000

1.1811

0.9910.000

3.712

1.090

0.000

0.0001. 090

28.559

Uptime

for 50\

240

909.032

3,18818.210

Dollars (000) /at

1,000.000

3,290.00046.000

846.000

2,727.0961,800.000

340.000

400.000115.000

340.000282.000

1,282.644150.000

250.000200.000

136.355454.516

0.00013,719.611

500.000

545.420

0.000600.000

525.1)00

0.000

2,170.420

585.714

0.000

0.000585.714

16,475.745

1.100

3.619

0.051

0.931

3.000

1.980

0.314

0.440

0.193

0.374

0.310

1.4110.165

0.2750.2200.150

0.500

0.00015.093

0.550

0.600

0.0000.660

0.5780.000

2.388

0.644

0.000

0.0000.644

18.124

27



28

ITEM IDENTIFICATION

Minutes Per Shif t

'l.'ravel Time

Lunch Time

Service Time


Downtime

Miner

S.C.BeltBol terFeederC/PTMPower

rimber RailConditionsSafetyModel Adjust DelaysOtherTotal Downtime

Remaining Uptime

Unit Shifts/Year

Cubic Feet/PlaceDensityR I . Tons/PlaceRaw Tons/S.C.

No. S.C./PlaceRejeot ,

Clean 'lions/S.C.

Place TimeMining

ManeuveringS.C. CbangeGa. Teat , SafetyVent i la t ion , PostsTramTotal Place Time


Place . /Uni t Shif t

Productivity - Clean Coal

'ron . /Unit Shift

Ton . /Hour'rons/Minute

Annual Produotion,at

SECTION

480.0

60.0

30.0

0.0

390.0

0.0

15 .0

21.0

4.8

3.0

30.5

1 .8

2 .0

5.0

11. a20.0

0.0

114.1

275.9

502

1 710 .1

94.50

80.8

7.0

11.5

22.80

5.40

15.01

1.1320.68

0.00

8.60

3.48

49.50

38.80

5.573

347.8

75.6

1.261

174,589

1 SECTION

480.0

62.0

30.0

0 .0

388.0

0.0

10.2

22.2

5.0

3.8

31. 0

1 .0

2.9

5.8

8.5

18.5

0.0

108.9

279.1

480

1 131. 7

94.50

81 8

7.0

11 .1

22.80

5.40

15.20

1.75

20.90

0.00

8.60

3.72

50.17

40.20

5 563

351.475.5

1.259

168,615



IMPROVE UPTIME BY 90 MINUTES FOR 50 EFFICIENCY

2 SECTION

480.0

65.0

30.0

0 .0

385.0

0.0

12.028.0

6.04.2

22.0

2.0

3 .0

fLO

9.8

17.8

0.0

110.8

274.2

536

1 857.4

94.50

87.8

7.0

12.522.80

5.40

16.30

1.88

25.20

0.00S.IiO

3.8355 81

39 50

4.913

332. iI

12 .81 214

178,432

3 SECTION

480.0

51LO

30.0

0.0

392.0

0.0

15.518.5

5.9

3.6

28 8

2.5

5 .0

2.5

13.0

22.0

0.0

117.3

274.7

528

1.880 094.50

88.87.0

12.7

22.80

5.40

16.50

1.90

19.440.00

8.60

4.6851.12

38.75

5.374

31iB.580.5

1 .341

194,569

4 SECTION

480.0

62.0

30.0

0.0

388.0

0.0

12.0

21.0

8.0

5 .0

35.0

2.8

5.3

4.2

10.0

15.0

0.0

118.3

269.7

354

1 642.8

94.50

77.6

7.0

11.1

22.80

5.40

14.42

1.66

16.50

a.oo8.60

3.18

44.36

36.80

6.080

364.3

111.1

1.351

128.973

5 SECTION

480.0

64.0

30 0

0.0

386.0

0.0

18.2

19.5

4.1i6.8

38.0

1 .9

3.0

2.8

8 .1

19.5

0.0

122.4

263. Ii

380

1 409 .4

94.50

66.6

7 .0

9.5

22.80

5.40

12.37

1 . 43

18.00

0.00

8.60

4.1144.50

37.00

5.923

304.5

69.3

1.155

115,112

I TOTAL/WTD

480.0

61. 1

30.0

0.0

388.3

0.0

13.721.

5.7

4.3

30.2

2.0

3.5

4.5

10 2

U.O

0.0

114.8

273 ...

2,780

1 724 .9

94.50

81.5

7.0

11.6

22.80

5.40

15 14

1.75

20.46

0.00

8.60

3.86

49.110

38 67

5.56

345.7

75.11

1.264

960,950

AV



Basia of Estimates

Days of V ' - < ; ~ . U l 1Total (Clean at) (000)

Daily Production (Clean s t)

Approx. s t /worker-day

A. Direct

1 . Labor -

2. Labor -

3.<I Benef i t s5.15

7. Power

Cost basis

8. FICA ' Unemployment Taxes9. Workmen s Compensation Insurance

10. Blsck Lung Compensation Insurance11. Welfare Hourly12. Welfare - Tonnage

13. Safety Expenses

14. P roduc t i on ' Safety Incent ives15. Accident Costs115. Reclamation Fee

17. Federal Black Lung Fee

18. Other Costs

Total

B. Other Cash Costs1- Overhead

2. Royal t i es3 . Miscellaneous Taxes

4. Equipment Leasing Costs5. In te res t Expense

15 Miscellaneous Income

Total

C. Other Costsl2. o f Development

3. DepletionTotal



Costs


Base Year 1988

Adj. Time St . Data

240

504.458

2,102

9.550

Dollars (000)

1,000.000

3,500.00046.000

900.000

1,513.374

1,800.000340.000

400.000115.000

340 000

300.000

711. 790

150.000

250.000200.000

75.6159

252.229

0.00011,954.062

500.000

302 1515

0.000

600.000

500.000

0.000

1,902.615

550.000

0.000

0.000550.000

14,406.731

/ s t

1. 982

15.938

0.091

1. 784

3.000

3.569

0.674

0.1930.347

0.6740.595

1.4110.297

0.08960.396

o 150

0.500

o 000

23.697

0.991

0.600

0.000

1.1890.991

0.000

3.172

1.090

0.000

0.0001.090

28.559

Uptime y 90 Minutes

For 50 Eff i c i ency

240

960.950

4,004

19.250

Dollars (000)

1,000.000

3,290.000

46.000

846.0002,882.8501,800.000

340.000

400.000175.000

340.000

282.000

1,355.900150.000

250.000200.000

144.143

480.4750.000

13,982.368

500.000

5115.510

a 000

600.000

525.000

0.000

2,201. 510

585.714

a 000

0.000585.714

16,769.652

/ s t

1.041

3.424

0.048

0.8803.000

1.873

0.354

0.4160.182

0.354

0.293

1.4110.156

0.21500.208

0.150

0.500

0.000

14.551

0.520

0.600

0.000

0.624

0.546

0.000

2.291

0.610

0.000

0.000

0.610

11.451

29



3

ITEM IDENTIFICATION

Minutes Per Shi f t

Travel Time

Lunch Time

Serv ice Time


Downtime

Miner

S.C.

Bel t

Bol t e r

Feeder

C/PTM

Power

Timber , Rai l

Condi t ions

Safe ty

Model Adjus t Delays

OtherTota l Downtime

Remaining Uptime


Cubic Feet /P lace

Densi ty

Raw Tons/PlaceRaw Tons/S.C.

No. S.C./P1aceReject

Clean Tons/S . C.

Place Time

Mining

Maneuvering

S.C. Change

Gas Test , Safe ty

Vent i l a t ion , Pos ts

Tram

Tota l P lace Time


Places /Uni t Shif t


Tons/Unit Shif t

Tona/Hour

Tons/Minute

Annual Produc t ion , a t

SECTION

480 . 0

60 . 0

30.0

0.0390.0

22.8

15.0

21. 0

4.8

3.0

30.5

1 .8

2 . 0

5 . 0

18 . 0

20 . 0

0 . 0

14 3 . 9

246.1

502

1 710 .7

94.50

80.8

7.0

11 .522 . 80

5 . 40

12.82

1.7320 . 68

0 . 00

8.60

3.4847.31

38.80

5 . 202

324 . 6

79.11 . 319

162 953

1 SECTION

480 . 0

62 . 0

30.0

0.038 8 . 0

25.0

10.2

22.2

5 . 0

3.8

31. 0

1 .0

2 . 9

5 . 8

15 . 5

18.5

0 . 0

140.9

247.1

480

1 731. 7

94.50

81. 8

7.0

11.722.80

5.40

12.97

1 . 75

20 . 90

0.00

8 . 60

3 . 72

47.95

40 . 20

5 . 154

32 5 . 5

79.0

1. 317

156 253



IMPROVED UPTIME BY 60 MINUTES FOR 75

2 SECTION

480.0

65.0

30 . 0

0.0385 . 0

18 . 0

12 . 0

28.0

6 . 0

4.2

22.02 . 0

3.0

6 . 0

16.8

11.8

0.0135.8

249.2

536

1 857 .4

94.50

87.81.0

12.5

22.805.40

13.92

1. 88

25.20

0.00

8.60

3 . 83

53 . 43

39 . 50

4 . 664

31 6 . 0

76.11. 268

16 9 , 394

3 SECTION

480.0

58.0

30 . 0

0 . 0392 .0

29.4

15.5

18.5

5 . 9

3.6

28.8

2.5

5.0

2.5

20.0

22 . 0

0 . 0

15 3 . 7

23 8 . 3

528

1 880.0

94.50

88.81 . 0

12.722 . 80

5 . 40

14 . 09

1. 90

19.44

0 . 00

8.60

4.6848 . 71

38.75

4 . 892

335.5

84.5

1. 408

177 142

4 SECTION

480.0

62.0

30.0

0.038 8 . 0

10.0

12 .0

21.0

8.0

5.0

35.0

2 .8

5.3

4.2

17 .0

15.0

0 .0

135.3

252.7

354

1 , 642.8

94.50

77.6

1.0

11.122 . 80

5.40

12 . 31

1 . 66

16.50

0 . 00

8 . 60

3 . 18

42.25

36.80

5.981

358.4

85.1

1 .418

126 869

5

EFFICIENCY

SECTION

480 . 0

64.0

30 . 0

0.0386.0

30 . 0

18.2

19.5

4.6

6 . 8

38.0

1 .9

3.0

2.8

15.1

19 .5

0.0

159.4

22 6 . 6

380

1 409.4

94.50

66.6

7.0

9 . 5

22.805 . 40

10.56

1 43

18 . 00

0 . 00

8 . 60

4 . 11

42.70

31.00

5.307

272.8

72.2

1. 204

103 681

6 TOTAL/WTD

48 0 . 0

61. 7

30 . 0

0 . 038 8 . 3

22.9

13 . 7

21. 9

5.7

4 . 3

30.2

2.0

3.5

4.5

17.2

19 .0

0.0

14 4 . 7

243.6

2 , 780

1 724 .9

94 . 50

81.5

7.0

11 . 6

22 . 80

5.40

12.92

1.75

20 . 46

0.008.60

3.8647 . 59

38.67

5.19

32 2 . 4

79 . 4

1 . 323

89 6 , 293

AV



Basis of Est imates

Days of Operat ion

Total Produc t ion (Clean s t ) (000)

Daily Product ion (Clean a t )

Approx. at/worker - day

Cost bas i .

A. Direc t Operat ing Costs1 . Labor - Salar i ed

2. Labor - Hourly

3 . Benef i t s - Salar i ed

4. Benef i t s - Hourly

5. Supplies - Operat ing

6 . Suppl i e s - Maintenance

7 . Power

8. FICA ' Unemployment Taxes

9. Workmen . Compensation Insurance

10 . Black Lung Compensation Insurance



13. Safe ty Expense.

14. P r o d u c t i o n ' Safe ty Incen t ives15. Accident Cost .

16. Reclamation Fee

17 . Federal Black Lung Fee

18 . other CostsTotal

B . Other Cash Costs

1 . Overhead

2 . Roya l t ie s

3 . Miscel laneous Taxes


5. I n t e r e s t Expense6 . Miscel laneous Income

Total

C. Other Costs

1. Deprecia t ion

2. Amort izat ion of Development Costs

3 . Deplet ionTotal




Base Year 1988

Ad j . Time St . Data

240

50 4 . 458

2 102

9 . 550

Dollars (000)

1,000.0003 50 0 . 000

46.000

900.000

1,513.374

1,800.000340.000

400.000

115.000

340.000

300.000

711. 790

150.000

250.000200.000

75.669

252.229

0.000

11,954 . 062

50 0 . 000

30 2 . 675

0.000600.000

50 0 . 000

0 . 000

1 902 . 675

55 0 . 000

0 . 000

0 . 000

55 0 . 000

14,406.737

/a t

1 . 982

6.938

O. 091

1 . 784

3.000

3 . 568

0.674

0 . 793

0 . 347

0.674

0 . 595

1.411

0.297

0.4960 . 396

0.1500.500

0 . 000

23 . 697

0.9910 . 600

0.000

1.189

0.991

0.000

3.772

1. 090

0.000

0.0001.090

28.559


For 75 Eff ic iency

240

896.293

3,735

17.955

Dollars (000) /a t

1,000.000

3 29 0 . 000

46.000

846.000

2,688.879

1,800.000

340.000

400 . 000

17 5 . 000

34 0 . 000

28 2 . 000

1,264 . 669

150.000

250 . 000200 . 000

13 4 . 444

448.147

0.000

13 655 . 139

500.000537.776

0.000

600.000

525.000

0.000

2,162.776

585.714

0.000

0.000585.714

16 403.629

1.116

3 . 671

0.051

0.944

3.000

2.008

0.379

0.446

0 . 195

0 . 379

0 . 315

1.4110 . 167

0 . 2790 . 223

0 . 150

0 . 500

0.000

15.235

0.558

0.600

0.000

0.669

0.5860.000

2.413

0.653

0.000

0 . 000

0.653

18.302

31



32

ITEM IDENTIFICATION

Minutes Per Shi f tTra.vel T i _

Lunch T i _Service l i _Remaininq Operatinq Time

DowntimeMiner

S.C.BeltBolterFeederC/PTM

Power

Timber Ra.ilConditionsSafetyMod . Adjust Delays

OtherTotal Downti_Remaininq Upt i_

Onit Shifts /Year

Cubio Feet/PlaceDensityRaw Tons/PlaceRaw Tons/S.C.

No. S.C./PlaceReject ,Clean fans/S.C.

1'111.0 T i _Mining

Man .uveringS.C. Change

Gall T.at ..Venti lat ion Ii

l ram

Total Place Time

Roof Bolting Place Time

Placea/Unit Shift

Productivi ty - Cl .an Coal

rona/Unit ShiftTons/Hour

Tona/Minute

Annua.l Production,at

SECTION

480.0

60.0

30.00.0

390.0

12.B

15 .0

21.0

4.83 .0

30.S

1.82 .0

5.0

13 .0

20.0

0 .0

128.9

261.1

502

1 ,nO.7

94.50

80.S

7.0

11 .522.80

5.40

12.82

1. 73

20.68

0.00

8.60

3.48

47.31

38.80

5.519

344.4

79.1

1.319

172,886

1 SECTION

480.0

62.0

30.00.0

388.0

15.0

10.2

22.2

5 .0

3.8

31.0

1 .0

2.11

5.8

10.5

111 5

0.0

125.9262.1

480

1,731. 794.50

81. 87.0

11 .7

22.80

5.40

12 . n

1.7520.90

0.00

8.60

3.72

47.95

40.20

5.466

345.3

79.0

1.311

165,738



IMPROVE uprIME BY 75 MINurES FOR EFFICIENCY

2 SECTION

480 0

6S.0

30.00 .0

385.0

8.0

12 .0

28.0

6 .0

4.2

22.0

2 .0

3.0

fi 0

11.817 .8

0 .0

120.8

264.2

536

1 ,857 .4

94.50

87.8

7 .0

12 .5

22.80

5.40

13.92

1.118

25.20

0.00

8.60

3.83

53.43

39.50

4.945

335.176.1

1 .269

179,590

3 SECTION

480.0

58.0

30.00.0

392.0

19.4

15.518.5

5 .9

3 .6

28.8

2 .5

S.O

2.S

15.0

22.0

0.0138.1

253.3

528

1 ,880 .0

94.50

88.87.0

12 .7

22.80

5.40

14.09

1 .9019.44

0.00

8.60

4.68

48.71

38.75

5.200

356.6

84.5

1.408

188,293

4 SECTION

480.0

62.0

30.00.0

3B8.0

0.0

12.0

21.0

8 .0

5.0

35.0

2.8

5.3

4.2

12.0

15 .0

0 .0

120.3

267.7

354

1 ,642 .8

94.50

77.67.0

11.122.80

5.40

12.31

1.6616.50

0.00

8.60

3.18

42.25

36.110

6.336

319 7

95.1

1 . 419

134,400

5 SECTION

480.0

64.0

30.00 .0

386.0

20.0

18.2

19 .5

4 .6

6.B

38.0

1 .9

3.0

2 .8

10.1

19.5

0.0U 4 . 4

241.6

380

1 ,409 .4

I f . 50

66.6

7.0

9.522.80

5.40

10.56

1.4318.00

0.00

8.60

4.11

42.70

31.00

5.658

290.972.2

1.204

110,544

6 rOTAL/WTD

480.0

61.7

30 .00.0

388.3

12 .9

13 721. 9

S.7

4.3

30.2

2 .0

3 .5

4.5

12 .2

19 .0

0 .0

129.7

258.6

2 ,780

1 ,724 .9

94.50

81.57 .0

11 .6

22.80

5 .40

12.92

1 . 75

20.46

0.008 .60

3 .86

47.59

38.61

5.51

342 2

79.4

1.323

951,451

AV



Basis of Estimates

o f(Clean st) (000)

Daily Product ion (Clean Btl

Approx. s t /worker-day

Cost bas i s

A Direct Operat ing Costs

* 1 . Labor - Sala r ied2. Labor - Hourly

* 3. Benef i t . - Salar ied

* 4. Benefi ts - Hourly

5. - Operating

* 6. - Maintenance

, . Power

8. FICA Unemployment Taxes

9. Workmen s Compensation Insurance10. Black Insurance

* 11.12. Welfare - Tonnage

13. Safety Expenses

* 14. Product ion .. Safety Incentives15. Accident Cost .

16. Reclamation Fee17. Federal Black Lung Fee

18. Other osts

B

Total

Other Cash Costs

1 . Overhead

2 .

3. Taxes4. Leasing Costs

5. Expense

6. Miscellaneous Income

Total

C. Other C o t s

1 .2. of Development Costs3 . Depletion

Total

Total ost of Mining



Base Year 1988

Adj. Time St . Data

240

504.458

2,102

9.550

Dollars 000)

1,000.000

3,500.00046.000

900.000

1,513.374

1,800.000

340.000

400.000

175.000

340.000

300.000

711.790

150.000

250.000

200.000

75.669252.229

0.00011,954.062

500.000

302.675

0.000

600.000

500 000

0.000

1,902.675

550.0000.000

0.000

550 000

14,406.731

/ s t

1.982

6.938

0.091

1. '843.000

3.568

0.674

0.793

0.347

0.674

0.595

1.4110.297

0.496

0.396

0.1500.500

0.00023.697

0.991

0.600

0.000

1.189

0.9S1l

0.000

3.712

l .0900.0000.000

l .090

211.559

240

951.451

3,964

19.060

Dollars (000) fist

1,000.000

3,290.000

46.000

846.000

2,854.353

1,1100.000

340.000

400.000175.000

340.000

2112.000

1,342.4511150.000

250.000200.000

142.118475.726

0.000

13,934.294

500.000

570.871

0.000

600.000

525.000

0.000

2,195.871

585.114

0.0000.000

585.714

16,115.879

1.051

3.458

0.048

0.889

3.000

1.892

0.357

0.420

0.1114

0.357

0.296

l .4110.158

0.263

0.210

0.1500.500

0.000

14.645

0.526

0.600

0.000

0.631

0.5520.000

2.308

0.616

0.0000.000

0.616

11.569

33



4

ITEM IDENTIFICATION

Minutes Per Shi f t

Travel Time

Lunch TimeServ ice Time


Downtime

Miner

S.C.

Bel t

Bol ter

Feeder

C/PTM

Power

Timber Rai lCondit ions

Delays

OtherTota l Downt i_

Remaining Uptime


CUbic Feet /P lace

Densi ty

Raw Tona/PlaceRaw Tona/S.C.

No. S C./Place

'onll/S.C.

Pl ace Time

Mining

Maneuvering

S.C. Change

Gas Teat & Safe ty

Vent i l a t ion POllts

Tram

Tota l P lace Time


Places /Uni t Shi f t

- Clean Coal

Annual Product ion s t

SECTION

480.0

60.0

30.00.0

390.0

0 .0

15.0

21 0

4.83.0

30.5

1.S

2 0

5.0

11 .0

20.0

0 .0

114.1

215.9

502

1 710 .7

94.50

80.81 0

11 .5

22.80

5.40

12.82

1 .73

20.68

0.00

8.60

3.48

41 31

38.80

5.832

363.9

19.1

1.:319

182,685

1 SECTION

480.0

62.0

30.0t . 0

388.0

0.0

10.2

22.2

5 .0

3 .8

31. 0

1 .0

2 9

5.B

8 .5

HI.5

o 0

108.9

219.1

480

1 731 .1

94.50

81.11

7.0

11. 722.S0

5.40

12.97

1 . 75

20.90

0.00

8.60

3.72

47.95

40.20

5.821

367.119.0

1.311

176,488



IMPROVE UPTIME BY 90 MINUTES BY 75

2 SECTION

480.0

65.0

30.00.0

385.0

0.0

12 .0

28.0

6 .0

4 2

22.0

2 .0

3 0

6.0

9.8

17.8

0.0

110.8

274.2

536

1 851 .4

94.50

87.S

1 .0

12.522.80

5.40

13.92

1.8825.20

0.00

8.60

3.83

53.43

39.50

5.132

347.776.1

1 .268

186,3S8

3 SECTION

480.0

58.0

30.00 .0

392.0

0.0

15 .5

18 .5

5.9

3 .6

28.8

2 .5

5 .0

2 .5

13 .0

22.0

0.0

111.3

274.1

528

1,1180.0

94.50

S8.11

1 .0

12 .1

22.80

5.40

14.09

1. 90

19.44

0.00

8 60

4.68

48.71

38.15

5.640

386.184.5

1 . 408

204,200

4 SECTION

480.0

62.0

30.00.0

388.0

0.0

12 .0

21.0

8 .0

5.0

35 .0

2 .8

5.3

4.2

10.015 .0

0.0

118.3

269.7

354

1 642 .8

94.50

71.67 .0

11.1

22.90

5.40

12.31

1 .66

16.50

0.008.60

3.111

42.25

36.80

6.383

382.585.1

1 .418

135,404

EFFICIENCY

5 SECTION'

480.0

64.0

30.00 .0

386.0

0.0

18 .2

B . 5

4 .6

6.e

38.0

1 .9

3.0

2 .8

8.1

19.5

0 .0

122.4

263.6

380

1 409 .4

94.50

66.6

1 .0

11.5

22.80

5.40

10 .56

1 . 43

18.00

0.00

8.60

4.11

42.70

37.00

6.174

317.472.2

1.204

120,611

6 TOTAL/WTD AV

480.0

61.1

30.00 .0

388.3

0.0

13.721. il

5.1

4.3

30.2

2 .0

3 .5

4.5

10.2

B. O

0.0

114.11

273.4

2,780

1,724 9

94.50

81. 5

7.0

11 .6

22.110

5.40

12.92

1 . 75

20.46

0.00

8.60

3 .86

41.59

38.61

5 .82

361.87 L4

1 . 323

1 005 176




Days o f Opera t ion


Dai ly Produc t ion (Clean s t )

Approx . a t /worker -day

Cost b a s i s

A. Direc t Operat ing Costs

1 . Labor - S a l a r i e d

2. Labor - Hourly

3. Ben e f i t . - S a l a r i e d

4 . Benef i t s - Hourly

5. Suppl i es - Operat ing

6. Suppl i e s - Maintenance

7. Power

8.

9 .

10.

11.12.

13.

14.

15 .16 .

17.

18 .

FICA Unemployment Taxes

Workmen . Compensat ion In su rance

Black Lung Compensat ion Insurance

Welfare - Sourly

Welfare - Tonnage

Safe ty Expensea

Produc t ion Safe ty Incent ives

Accident Cost .Reclamation Fee


Other Coats

Total

B. Other Caah C os ts

C.

1. Overhead

2. Roya l t ie s


4 . Equipment Leas ing Costa



Total

Other Costs

1. Deprec ia t ion


3. Deple t ion

Total


Fixed Dol la rs Pe r Year


Base Year 1988

Adj . Time s t . Data

240

504.458

2,102

9.550

Dol la rs (000)

1 00 0 . 000

3,500.000

46 . 000

900.000

1,513.374

1,800.000

340.000

400.000

17 5 . 000

34 0 . 000

300.000

71 1 . 790

15 0 . 000

250.000

200.00075.669

252.229

0.000

11,954 . 062

500.000

302.675

0.000

60 0 . 000

50 0 . 000

0 . 000

1 90 2 . 675

550.000

0 . 000

0.000

55 0 . 000

14,406.737

/ s t

1 . 982

6 . 938

0 . 091

1.784

3 . 000

3.568

0 . 674

0 . 793

0 . 347

0 . 674

0.595

1.411

0.297

0.496

0.3960 . 150

0.500

0.000

23 . 697

0.991

0 . 600

0 . 000

1.189

0.991

0.000

3.772

1. 090

0.000

0 . 000

1. 090

28.559


For 75 Eff ic iency

240

1 ,005 . 776

4,191

20 . 148

Dol la rs (000)

1,000.000

3,290.000

46.000

84 6 . 000

3,017 . 32 8

1 ,800 . 000

340.000

400.000

1 75 . 000

34 0 . 000

282.000

1,419 . 149

150.000

250.000

20 0 . 000150.867

502.888

0.00014,209.232

500.000

60 3 . 466

0.000

600.000

525.000

0.000

2,228.466

585.714

0.000

0 . 000

585.714

17,023 . 412

/ s t

0.994

3.271

0.046

0.841

3.000

1. 790

0.338

0.398

0 . 1 74

0.338

0.280

1.411

0.149

0.249

0 . 1990.150

0.500

0.000

14.128

0 . 497

0.600

0.000

0 . 597

0 . 522

0 . 000

2 . 216

0.582

0.000

0.000

0.582

16.926

35



36

ITEM IDENTIFICATION

Minutea Per Shif t

Travel Tima

Lunch Time

Serv ice Tima


Downtime

Miner

S.C.

Bel t

Bol t e r

Feeder

C/PTM

Power

Timber , Rai l

Condi t iona

Safe ty

Model Adjuat De1aya

Other

Total Downt i_

Remaining Uptime

Unit Shi f ta /Year

Cubic Feet /P lace

Densi ty

Raw Tona/P1ace

Raw Tona/S.C.

No. S.C./P1ace

Reject

Clean Tona/S . C.

Place Time

Mining

Maneuvering

S . C. Change

Gaa Teat , Safe ty

Vent i l a t ion , Poata

Tram

Tota l P lace Time


Placea/Uni t Shif t


Tona/Unit Shif t

Tona/Hour

TonS/Minute

Annual Produc t ion a t

SECTION

480.0

60 . 0

30.0

0.0

39 0 . 0

22 . 8

15.0

21. 0

4.83.0

30.5

1.8

2.0

5.0

18 .020 . 0

0 . 0

143.924 6 . 1

502

1 710 . 7

94.50

80 . 8

7.0

11 . 5

22.80

5.40

11 . 20

1 . 73

20 . 68

0 . 00

8 . 60

3.48

45 . 69

38.80

5 . 386

336.1

81. 9

1. 366

16 8 , 719

1 SECTION

480.0

62.0

30 . 0

0.0

388.0

25 . 0

10 . 2

22 . 2

5.0

3.8

31 . 0

1 .0

2 . 9

5.8

15.5

18.5

0 . 0

140.9

24 7 . 1

480

1 731 . 7

94.50

81. 8

7.0

11. 7

22.80

5.40

11.34

1. 75

20.90

0 . 00

8.60

3.7246.31

40.20

5.336

337.0

81 . 8

1. 364

161 774



IMPROVED UPTIME BY 60 MINUTES FOR 100

2 SECTION

480.0

65.0

30 . 0

0.0

385.0

18 . 0

12.0

28.0

6.0

4.2

22.02 .0

3.0

6.0

16.8

17.8

0.0

135.8

249.2

536

1 857 .4

94.50

87 . 8

7.0

12 .5

22.80

5.40

12.16

1 . 88

25.20

0.00

8 . 60

3 . 83

51.67

39.50

4.823

326.8

78.7

1.311

175 148

3 SECTION

480.0

58.0

30 . 0

0.0

392 . 0

29.4

15.5

18.5

5 . 9

3 . 6

28.82.5

5 .0

2 . 5

20.0

22 . 0

0 . 0

15 3 . 7

238.3

528

1 880 .0

94.50

88.8

7 . 0

12.7

22 . 80

5 . 40

12.31

1 . 90

19.44

0.008 . 60

4.68

46.93

38.75

5 . 077

348.287.7

1.461

183 848

4 SECTION

48 0 . 0

62.0

30.0

0.0

388.0

10 .0

12 . 0

21.0

8 . 0

5.0

35.02 . 8

5.3

4.2

17 . 0

15.0

0.0

135.3

252.7

354

1 642 . 8

94.50

77.6

7 .0

11.1

22 . 80

5.40

10.76

1 . 66

16.50

0.008.60

3.18

40.70

36.80

6 . 209

37 2 . 1

88.3

1.472

131 708

5

EFFICIENCY

SECTION

480 . 0

64.0

30.0

0.0

386.0

30.0

18 . 2

19.5

4.6

6.8

38.0

1 .9

3.0

2.8

15.119 . 5

0.0

159.4

226.6

380

1 409 .4

94.50

66.6

7 . 0

9 . 5

22.805 . 40

9.23

1. 43

18 . 00

0.00

8.60

4.11

41. 37

37 . 00

5 . 478

281.674.6

1 .243

107 020

6 TOTAL WTD

480.0

61. 7

30 . 0

0.0

38 8 . 3

22 . 9

13 . 7

21. 9

5 . 7

4 . 3

30.22 . 0

3 . 5

4 . 5

17.2

19.0

0.0

14 4 . 7

243.6

2 780

1 724 . 9

94.50

81. 5

7.0

11 .6

22.80

5.40

11 . 29

1 . 75

20 . 46

0.00

8.60

3.86

45.96

38 . 67

5 . 37

33 3 . 9

82.2

1.370

928 217

AV



Basis of Est imates

Daya o f Operat ion

Tota l P roduc t ion (Clean s t ) (000)

Daily Produc t ion (Clean s t )

Approx . a t /worker -day

Cost bas i s



2. Labor - Hourly

3. Benef i t s - Sa la r ied

4. Bene f i t . - Hourly

5. Suppl i e s - Operat ing


7. Power

8. FICA Unemployment Taxes9 . Workmen . Compensation Insurance

10 . Black Lung Compensation Insurance

11 . Welfare - Hourly


13. Safety Expenses

14. Produc t i on Safety Incen t ives15. Accident Costs16 . Reolamation Fee


18. O ther Coats

Tota l


1. Overhead

2. Roya l t ie s

3. Miscellaneous Taxes

4 . Equipment Leasing Costs

5. I n t e r ea t Expense6. Miscel laneous Income

Tota l

C. Other Costs

1. Deprec ia t ion

2. Amort1l:ation of Development

3 . Deplet ionTota l

Tota l Cost of Mining


Costs

COST OF MINING ST TEMENT

Base Year 1988

Adj. Time S t . Data

240

504.458

2 , 102

9 . 550

Dol la rs (000) $ / s t

1,000 . 000

3,500.000

46 . 000

900 . 000

1,513.374

1 , 800.000

340.000

400.000

175.000

34 0 . 000

300.000

711 . 790

15 0 . 000

25 0 . 000200.000

75.669

252 . 229

0.00011,954. 062

500.000

302.675

0 . 000

60 0 . 000

500.000

0.000

1 , 90 2 . 675

550.000

0.000

0 . 000

550 . 000

14,406.737

1.982

6.938

0.091

1.7843 . 000

3.568

0 . 674

0.7930.347

0.674

0.595

1.4110.297

0.4960 . 396

0.150

0.500

0.00023 . 697

0.991

0 . 600

0 . 000

1.189

0.991

0.000

3.772

1. 090

0.000

0.0001 . 090

28.559


For 100\ Eff ic iency

240

928.217

3,868

18.594

Dol la rs (000) $/a t

1,000 . 000

3,290.000

46 . 000

846.000

2,784 . 651

1,800.000

34 0 . 000

400.000

17 5 . 000

340.000282.000

1,309.714

15 0 . 000

25 0 . 000200.000

139.233

464 . 109

0.00013,816.706

500.000

556.931

0.000

600 . 000

525.0000.000

2 , 181. 931

585.714

0.000

0.000585.714

16 , 584.351

1.077

3 . 544

0 . 050

0.911

3 . 000

1 . 939

0.366

0 . 431

0.189

0 . 366

0 . 304

1.411

0.162

0 . 2690.215

0.150

0.500

0 . 000

14 . 885

0 . 539

0.600

0.0000 . 646

0 . 566

0.000

2.351

0.631

0 . 000

0.0000.631

17.867

37



38

ITEM IDENTIFICATION

Minutes Per Shi f tTravel Time

Lunch rime

Service T i _

Remaining Operating 1 1100

DowntimeMiner

S.C.BeltBol terFeeder

C/PTKPower

Timber Ii RailCondi t ions

Adjust Delays

OtherTotal DowntimeRemaining Uptime

Unit Shifts /Year

CUbic Feet/PlaceDensityRaw Tona/PlaceRaw Tons/S.C.

No. S.C./PlaceReject ,

Clean fons/S.C.

Place 'fimeMining

Maneuvering

S.C. Change

Gas Test Ii SafetyVentilation , PoatsTram

Total Place Time


Places/Unit Shift

Productivity - Clean CoalTons/Unit ShiftTons/Hour

Tons/Minute

Annual Proauction,s t

SECTION

480.0

60.0

30.0

0.0390.0

12.8

15.021. 0

4.8

3.0

30.5

1.8

2.0

5.0

13.0

20.0

0.0

128.9

261.1

502

1 710 .7

94.50

80.8

7.0

11.5

22.80

5.40

11.20

1.13

20.68

0.00

8.60

3.48

45.69

38 80

5.714

356.681.9

1 .366

179,002

1 SECTION

480.0

62.0

30.0

0.0

388.0

15.0

10.2

22.2

5.0

3.8

31. 0

1 .0

2.9

5.8

10.5

18.5

0.0

125 9

262.1

480

1 731. 7

94.50

81. 8

7.0

11. 7

22.110

5.40

11.34

1 . 75

20.90

0.00

9.60

3.1246.31

40.20

5.660

357.5

81.S

1. 364

171,594



IMPROVE UPTIME BY 15 MINUTES FOR 100

2 SECTION

480.0

65.0

30.0

0.0

385.0

8.0

12.0

211.0

6.0

4.2

22.0

2 .a

3 .0

6.0

11.811.8

0.0

120.8

264.2

536

1 957 .4

94.50

81.8

7 .0

12.5

22.110

5.40

12.16

1.811

25.20

0.00

9.60

3.113

51.61

39.50

5.113

346.418.7

1 .311

185,691

3 SECTION

480.0

58.0

30.0

0.0

392.0

19.«15.5

18.5

5 .9

3.6

28.82.5

5.0

2.5

15.022.0

0.0

138.7

253.3

528

1 880.0

1I4.50

88.11

7.0

12.7

22.110

5.40

12.31

1.9019.44

0.00

8.60

4.6846.93

38.15

5.391

370.1

81.7

1 . 461

195,420

SECTION

480.0

62.0

30.0

0 .0

388 0

0.0

12 .0

21.0

B.O

5.0

35.0

2.8

5 .3

4 .2

12 .0

15 .0

0.0

120.3

261.7

354

1 642 .9

94.50

77.6

7.0

11.1

22.110

5.40

10.16

1.66

16.50

0.00

8.603.18

40.70

36.80

6 578

394.188.3

1 .472

139,527

5

EFFICIENCY

SECTION

480.0

64.0

30.0

0.0

386.0

20.0

111.2

19.5

4.6

6.11

38.0

1.9

3.0

2.11

10.1

19.5

0.0

144 .4

241. 6

380

1 409 .4

94.50

66.6

7.0

9.5

22.110

5.40

I. 23

1.4318.00

0.0011.60

4.11

41.31

37.00

5.841

300.3

74.6

1 .243

114,104

6 TOTAL/WTD

480.0

61.1

30 a

0.0388.3

12 .9

13.1

21. 9

5.1

4.3

30.2

2.0

3.5

4.5

12.2

19 .0

0.0

129.7

258.6

2 ,780

1724. I94.50

Ill.S7.0

11.6

22.110

5.40

11.29

1 75

20.46

0.0011.60

3.116

45.96

311.61

5 70

354.482.2

1 370

985,338

AV



Basis o t Est imates

Days o f Opera t ion

Tota l P roduc t ion (Clean s t ) (000)

Dai ly Product ion (Clean s t )Approx. s t /Worker-Day

Cost baa is



2 . Labor - Hourly

3. Ba n e t i t s - S a l a r i e d

4. Benef i t s - Hourly

5. Suppl i e s - Opera t ing


7. Power

8 . FICA Unemployment Taxes

9 . Workmen's Compens a t i o n I n s u ran ce

10 . Black Lung Compensat ion Insurance

11 . Welta r e - Sour ly


13 . Safe ty Expenses

14 . P r o d u c t i o n ' Sa te ty Incen t ives

15. Accident Coata16. Reclamation Fee

17. Federa l Black Lung ee

18 . Other Costs

Total


1 . Overhead

2. Roya l t ie s


4. Equipment Leas ing Cost .



Total

C. Other Costs

1. Deprec ia t ion

2 . Amort izat ion o t Development Costs3. Deplet ion

Total



COST OF M N N ~ STATEMENT

Base Year 1988

Adj. Time s t . Data

240

50 4 . 458

2 1029.550


1 000 . 000

3,500.000

46 . 000

900.000

1 51 3 . 374

1,800 . 000

34 0 . 000

40 0 . 000

17 5 . 000

340.00030 0 . 000

71 1 . 790

150.000

25 0 . 000

20 0 . 00075 . 669

252.229

0 . 000

11,954.062

50 0 . 000

302.675

0 . 000

600.000

50 0 . 000

0 . 000

1,902.675

55 0 . 000

0.000

0 . 000

550.000

14 406.737

1 . 982

6 . 938

0.091

1 . 784

3.000

3.568

0.674

0.793

0 . 347

0 . 674

0 . 595

1.4110.297

0.496

0 . 3960 . 150

0 . 500

0 . 000

23 . 697

0.991

0.600

0.000

1.189

0 . 991

0 . 000

3 . 772

1 . 090

0.000

0.000

1 . 090

28 . 559

Uptime by 75 Minute.

For 100 Eff ic iency

240

985.338

4,10619.738

Dol la rs (000)

1,000.000

3,290 . 000

46.000

846.000

2,956.014

1,800.000

340.000

400.000

17 5 . 000

340.000

282.000

1 390.311

150.000

250.000

200.000147.801

492.669

0 . 000

14 10 5 . 796

500.000

591.203

0 . 000

60 0 . 000

525.000

0.000

2 216.203

585.714

0.0000.000

585.714

16 907.713

/s t

1. 015

3.339

0.047

0 . 859

3.000

1.827

0.345

0.406

0.178

0.345

0 . 286

1.411

0.152

0.254

0.2030.150

0.500

0 . 000

14.316

0.507

0.600

0.000

0 . 609

0.533

0.000

2.249

0 . 594

0.0000.000

594

17.159

9



40

ITEM IDENTIFICATION

Minutes Per Shi f t

Travel Time

Lunch TimeService TimeRemaining Operating Time

SECTION 1

480.0

60.0

30.00.0

3510.0


BY CONTINUOUS HINER SECTION


SECTION 2 SECTION :3 SECTION 4

480 0 4110.0 480.0

62.0 65.0 511.0

30.0 30.030.0

0.0 0.0 0.0

388.0 385.0 392. )

FOR 100 EFFICIENCY

SECTION 5 SECTION 6 TOTAL/WTD V

480.0 480.0 4S0.a62.0 64.0 61 73a.0 3a.a 30.0

0.0 0.0 0.03811.0 396.0 388.3

Downtime

Miner

S.C.BeltBolterFeeder

C/PTM

Power

Timber , Rail

Condi t ions

Adjust Delays

OtherTotal Downtime

Remaining Uptime

Unit Shifts/Year


Rsw Tons/PlaceRaw Tons/S.C.No. S.C./Place

Tons/S.C.

Place Time

Mining

Maneuvering

S.C. Change

Gas Test ..

Venti lat ion ..Tram

Total Place Time


Places/Unit Shi f t

- Clean Coal

Annual Produc t ion ,s t

0.015.021.0

4.83.0

30 5

1 8

2.05.0

11. 020.0

o 0

114.1275.9

502

1,710.194.50

80.81.0

11.522.80

5.40

11.201. 73

20.68

0.008.60

3.48

45.69

38.80

6.038

376.881. 9

1.366

189,149

0.0

10.222.2

5.0

3 11

31. 0

1.02.95.811 5

18.50.0

10S.92751.1

480

1,731.794.50

81. 8

7.0

11.722.80

5.40

11.34

1.1520.90

0.008.603.72

46.31

40.20

6 021

380.7Sl S

1 364

182,724

0 <0

12.028.0

6 0

4.222.02.0

3.06 0

SI.817.9

0.0110.8

274.2

536

1,857.494.50

87.87.0

12.522.80

5.40

12.161 .88

25.20

0.008.60

3.83

51.67

39.50

5.307

359.6711.7

1.311

192,719

0.015.518.5

5 51

3.628.8

2.55.02.5

13.022.0

0.0117.3274.7

528

1,880.094.50

98.8

7.012.1

22.80

5.40

12.31

1 . 90

19.440.008.604.68

46.93

38.75

5.853

401. 4

87.7

1. 461

211,930

0.012.0

21.011.0

5.035.0

2.85.34.2

10.015.0

0.0118.3269.7

354

1,642.894.5077.6

7.011.1

22.80

5.40

10.76

1.6616.50

0.008.603 18

40.70

36.80

6.621

397.188.3

1.412

140,569

o.a18.219.5

6

6 11

39.0LSI

3.02.88.1

19.50.0

122.4

263.6

3S0

1,409.494.50

66.67.09.5

22.805.40

11.23

1.4318 00

0.008.60

.1141.37

37.00

6.373

321.614.6

1.243

0.013.721.9

5.74.3

30.2

2.0

3.54.5

10.219.0

0.0114.S213.4

2,780

1,724.994.50

81. 5

7.0

11.622.80

5.40

11.211

1 .7520.46

0.008.60

3.86

45.96

38 67

6.03

374.182.2

1.370

124,494 1,041,585



Basi s o f Es t ima tes

Day8 o f O per a t ion


D ai ly Produc t ion (Clean s t )Approx. a t /w or ker - day

Cost baais

A . Direc t O per a t ing Co at s

1 . Labor - Sa l a r i ed

2 . Labor - Hourly

3. Be n e f i t . - Sa l a r i ed

4 . B en ef i t . - Hourly

5. Suppl i e s - O per a t ing


7. Power

8 . F I C A Unemployment Taxea

9. Workmen's Compensat ion I nsur ance

10. Black Lung Compenaa t ion I nsur ance



13. Saf e t y Expenses

14 . P r o d u c t i o n Safe ty Incen t ives

15. A cc ident Cost .

16. Reclam at io n Fee

17 . Federa l Black Lung Fee

18 . O ther Costs

Total

B. Oth er Cash Costs

1 Overbead

2 . Roya l t i e s

3 . Misce l laneous Taxes

4 . Equipment Leas ing Cos t s

5 . I n t e r e s t Expense

6 . Misce l laneous Income

Total

C. Oth er C o s t .

1 . Deprec ia t ion

2 . A mor t iza t ion o f Development Costs

3.Deplet ion

Tota l




Base Year 1988

Adj . Time St . Data

240

504.458

2,1029 . 550

Dollars (000)

1,000 . 000

3,500 . 000

46.000

900.000

1,513 . 374

1,800.000

34 0 . 000

40 0 . 000

17 5 . 000

34 0 . 000

300.000

711.790

150.000

250.000

200.000

75.669

252.229

0.000

11,954 . 062

50 0 . 000

302.675

0.000

600.000

50 0 . 000

0.000

1,902.675

550.000

0.000

0.000550.000

14,406 .737

S/ s t

1.982

6.938

0.091

1 . 784

3.000

3.568

0 . 674

0.793

0 • .34 7

0 . 674

0.595

1.411

0 . 297

0.496

0.3960.150

0 . 500

0.000

23 . 697

0.991

0.600

0.000

1.189

0.991

0.000

3 . 772

1.090

0 . 000

0.0001 . 090

28 . 559


For 100 Eff i c i ency

240

1,041 .585

4,34020 .865

Dol la r s (000)

1,000 .000

3 ,290 .000

46 .000

846.000

3,124 .755

1 ,800 .000

340.000

400.000

175.000

340.000

28 2 . 000

1,469 .676

150.000

25 0 . 000

200.000156 .238

520. H 3

0.000

14,390 .462

500.000624.951

0.000

600.000

525.000

0.000

2,249.951

585.714

0.000

0 . 000

585.714

17 226.127

S/ s t

0.960

3 . 159

0.044

0.812

3.000

1. 728

0.326

0 . 384

0.168

0.326

0.271

1.411

0.144

0.240

0 . 192

0.150

0.500

0.000

13.816

0.480

0.600

0.000

0 . 576

0.504

0 . 000

2.160

0.562

0 . 000

0 . 000

0 . 562

16 . 538

41

Cost-Benefit Analysis of Computer

Documents