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PeoplePeopleMgmt SkillsMgmt Skills

The Highwall Puzzle Pieces The Highwall Puzzle Pieces

Com

mun

icat

ion

Com

mun

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ion

EquipmentEquipment

ReservesReserves

People

Miner Operator 1

Endloader Operator 1

Mechanic 1

Electrician 1

General Laborer 3

Foreman 1

Total 8

People• Labor shortage

• Two – twelve hours shifts / day

• Operate 4 – 6 days per week

• Maintenance 1 day per week

• Geographic locations change often

• Exposed to nature’s elements

• Perceived as a short term job

Reserves

• Seam heights 2.5 – 28 ft

• Sustain a 1-3 year project

• 40,000 – 200,000 tpm

• Best if not previously auger mined

• Competent roof or ability to leave head coal

• Mine bottom up

Equipment Spread

• Modified Continuous Miner

• Cascading Conveyor Cars

• Launch Vehicle

• Stacker - 54 inch belt

• Bulldozer - pushing coal

• 2 Endloaders – loading & unloading cars & loading trucks

• Water Storage Tank

Communication

• Real time info in the cab

• Web based storage

• Real time communication with

home office (under development)

Communication

• Real time info in the cab

• Web based storage

• Real time communication with

home office (under development)

Communication

• Real time info in the cab

• Web based storage

• Real time communication with home office (under development)

Management Skills

• Long term mine planning

• Synchronization of equipment

• Synchronization of qualities/ markets

• Keeping available wall

Longwall/Highwall Similarities

• Sole purpose is to cut coal

• Initial reluctance to rely on the technology

• Typically the lowest cost coal from a mining complex

• Keeping gate roads ahead is as challenging as keeping wall available

Safety

Mining Method NFDL Rate

ADDCAR 0.00

Surface Mining 1.59

Underground Mining 5.72

( 3rd Qt 2005 - YTD)

Productivity

Mining Method TPEH

Western Surface Mines 22.1

ADDCAR 18.3

Longwall Mines 5.0

Eastern Surface Mines 4.2

Non-Longwall Underground Mines 3.4

( 3rd Qt 2005 - YTD)

Narrow Pit System

• Footprint reduced from 90 – 45 ft

• Continuous coal flow

• Fewer fines

• Horizontal & vertical guidance

• 1,200 ft penetration

• Purchase – lease – contract mine

ADDCAR Advantages

• Cascading cars

• Navigational System

• Volume

Conclusion

If you keep wall …. you experience this