Investigation Guide for Quarry Site Location and Assessment - January 1990 - R D Leach ^26amp^3B R Saligari.rcn-D12^23221547

7/27/2019 Investigation Guide for Quarry Site Location and Assessment - January 1990 - R D Leach ^26amp^3B R Saligari.rc

1/25

INTERNAL

Materials EngineeringBranch

JJ GPunchMaterials Engineering Laboratory

MATERIALS INVESTIGATION GUIDE

FORQUARRYSITELOCATION AND

ASSESSMENT

MaterialsReportNo. 90/1 M

RDLEACH

SENIOR RESEARCH OFFICER

R SALIGARI

ENGINEERING ASSISTANT (MATERIALS)

MainRoadsDepartmentPERTH,WESTERNAUSTRALIA

JANUARY1990

CR20:90-1M-RS.N03


2/25

This Materials Engineering Report is prepared by Main Roads Western Australia (MRWA) to investigatespecific issues that are generally related to its infrastructure assets. This Materials Engineering Reportrepresents the author's state of knowledge at the time that the reports were written. MRWA makes no

representation or warranty that this Materials Engineering Report details the current or complete state ofknowledge on any particular matter. MRWA does not use the Materials Engineering Reports for any other

purposes and does not consider them suitable to use for any other purpose.

If you use this document for any purpose which is not consistent with the above (including, without limitation,

for carrying out any investigations, design, construction, engineering, maintenance, inspections or other

work), you do so at your own risk.

MRWA has no responsibility to inform you of any matter coming to MRWA's notice which may affect thequality of Materials Engineering Reports in any way. You may print a copy of this Materials Engineering

Report for your own purposes, but you must not copy, reproduce or modify this.

All information contained on this report is copyright material, vested in or licensed to the MRWA, and is notto be copied, supplied, modified, adapted, displayed, disclosed, or supplied to any third party. You also

agree that you will not de-compile, disassemble or reverse engineer the information, for any reason.


3/25

ABSTRACT

This report provides guidelines fortheproceduresto befollowedwhen anewquarry site isto beestablishedor anexisting siteextended. The

guidelinesare directedatensuringthedepartmenthasadequate

informationon the qualityandquantityofsourcerock priorto the

callingoftenders for themanufactureofcrushedproducts. Location,

investigation,reportingandpresentationofresultstotenderersare

described.


4/25

CONTENTS

PAGE

1. INTRODUCTION 1

2. INVESTIGATION PLANNING 2

3. PRELIMINARYSURVEY(MRD STAFF) 4

4. GEOLOGICALINVESTIGATION 6

4.1 Preliminary Investigation 6

4.2 Detailed Investigation 74.2.1 GeologicalMapping 7

4.2.2 DiamondCoreDrilling 8

4.2.3 Percussion Drilling 10

4.2.4 Trial Blasting 11

4.3 Site Identification H

4.4 Testing H

4.4.1 RockforUse asSealingAggregate 12

4.4.2 RockforUse asConcreteAggregate 124.4.3 RockforUse as Roadbase 12

4.4.4 RockforUse as Rock Armourfor Batter&

EmbankmentProtection 12

4.5 Reporting 1-

5. COREREGISTER 15

6. MATERIALS ENGINEERINGREPORTS 16

7. PROVISION OFINFORMATIONTOTENDERERS 17

8. QUARRYSITE ACQUISITION 18

APPENDIX A : CRITICALPATHMETHOD NETWORK

APPENDIX 8 : TYPICALCOREPHOTOGRAPH

3.


5/25

1. INTRODUCTION

InWesternAustraliarock quarries are an essential source of

roadbuildingmaterialsincluding sealing and concrete aggregate, road

baseand rockarmour.

Material supply is normally by contract from privatelyownedquarries or

from sitesownedornominatedby theDepartment. With regard to

Departmental sitesanumberof activities including a materials

investigation,aboriginal siteclearance, landacquisition, the drawing

up ofspecifications,etc,mustbecarriedout before tenders can be

called and contractslet. The overall programisdirected and

co-ordinatedby thePrincipal Engineer concerned. This reportdetailsthe materialsinvestigationaspect of theprogramwhich is co-ordinated

by the Materials Engineer and onlyrefersto other activitieswherethey

mustbe completed before materialsworkcan proceed.

The establishment and working of a quarry is an expensive undertaking and

thedepartmenthas aresponsibilityto ensure thatsites i tselectsare

suitablefortheir intended use. For this reason new quarry sitesare

onlyto be selected, and old quarry sitesonly extended afteran

investigationhas proved suitablerock isavailable. This investigation

will involve co-operationbetweendepartmental engineers, testing

personnel, geologists and drilling crews. This report provides

guidelinesas to the responsibilitiesof the variousofficersinvolved,

the procedure to be followed in theselection and assessmentof quarry

sites, and the preparation of materials information for presentation to

tenderers.

The guidelines arebasedon those described in an earlier draftreport

(MED Report84/35M) buthave beenupdatedto incorporatechanges

suggested by divisional and other staff involved in quarry

investigations.

2. INVESTIGATIONPLANNING

To facilitate the co-ordination of quarry site investigations, Divisional

Engineers should forwarddetailsoftheir likely quarry requirements

4.


6/25

basedontheir current FiveYearPlanning Strategyto theappropriate

Principal Engineer withacopyto theMaterials Engineer. TheMaterials

Engineer shouldbeinformed of anyrequirementsnotspecifiedin the

annualupdateassoonas theneedbecomes known. Requirements intended

tobe met bypurchasefromprivatelyowned andoperated quarries should

notbeincluded.

Thefollowing information shouldbeprovided:

(a) Alistof the number ofquarries requiredandgeneral proposed

areasoflocation, i fany.

(b) Thelocationof anyexisting potentially suitable quarries.

(c) Thelocationofproposedworksinwhichquarried materialis to be

usedand the programmeddatefortheworks.

(d) Proposeduse ofmaterial.

(e) Quantitiesofmaterials foreachuse.

(f) Suggestedspecification forthematerial, i fany.

(g) Theproposed dateforcallingoftenders.

(h) Anyspecial requirements.

On thebasisofthisinformationtheMaterials Engineer will planand

co-ordinate quarry site investigations includingliaison with divisional

staff,geologists,drillers andtesting staff.

Planning will include provisionof a 5year strategyandschedulesfor

individual quarry investigations. Planningfor individualinvestigations

will generallybe inaccordancewiththecritical pathmethodnetwork

shown inAppendixA. Schedulesof theplannedinvestigationswillbe

forwardedto thedrillers (EngBridgeDesign)theGeologistand the

appropriate Divisional Engineers for approval andaction.

5.


7/25

Notethat theCRMnetworkincludes activities suchasaboriginal site

surveysandenvironmental assessments. Theseactivitiesare usually best

carriedout atthesametimeasthe materials investigation,however,it

isnotthe functionofthe MaterialsEngineertoco-ordinate suchwork

which remainsthe responsibilityoftheDivisional Engineer.

It shouldbenotedthataleadtimeof atleast sixmonthsis requiredto

completeaninvestigation. Inthecaseofaggregatefor concretethe

leadtimeshouldbeincreasedto atleast12monthstoallow for alkali

reactivityandmortarbar testing. Theseleadtimesmayrequire

considerable extension i f land acquisionproblemsareencountered.

3. PRELIMINARYSURVEY (MRDSTAFF)

The Divisional Engineershould initiateapreliminarysurveyofpossible

quarry sites inaccordancewith theplannedinvestigationschedule using

Divisional Laboratory Staff.

In the executionofthissurveylaboratory staff should:

(a) Obtain copiesof

relevantmaps andphotographs,eg.

. topographicalmaps

. geologicalmaps

. soilmaps

. airphotographs

(b) Establish landownershipdetailsincluding freehold pastoraland

mineral leasesortenements,reserves etc (refertoHeadOffice

ReservesOfficer fort i t l e searchatLands&Titles Officer,

TenementOfficer,Mines Department,etc).

(c) Notify landowner,tenants etc officiallyofintentof MRD to

searchontheirland. (NoticeofEntry).

(d) Complywith all statutoryanddepartmental requirementsin regard

to aboriginal, archeologicalandother prescribed sites(see

OperationsBranchCircularsNos 39 and 59) andcarryoutsurveysto

locatesuch sites.

6.


8/25

(e) Conductapreliminaryreconnaisanceofselected likely areasand

examineandsamplesurface outcroppings. Photograph likely areas.

Preliminary basic testssuchas LosAngelesAbrasion shouldbe

carriedout togiveanindicationofrock quality.

(f) Assesspossibleenvironmental impactofquarriesatlikely sites,

eg. visibilityfromroad,likelihoodofdustdriftand

contamination, relative locationofwatercoursesetc.

(g) Select possibleaccess routes.

(h) Document theresultsofinvestigations carriedoutforthe

informationof theconsulting geologist.

Thepreliminarysurveymay bereducedappropriately i fanexistingquarry

siteisavailableandall thatisinvolvedis anextension of the

workings. Notethatalthoughaboriginal site surveysandenvironmental

assessmentsare notpartof thematerials investigationandremainthe

responsibilityof theDivisionalEngineeri tisgenerally convenientto

carrythesefunctionsout aspartofthis preliminarysurvey.

4. GEOLOGICALINVESTIGATION

Thegeological investigation shouldbecarriedout by aqualifiedand

experiencedGeologistat theinstigationof theMaterialsEngineer. This

function will usuallybeundertakenbystaffof theGeological Surveyof

WesternAustraliaonbehalfof the MRD, althoughConsulting Geologists

may beused. Divisional laboratory staffanddrillingcrews should

assisttheGeologistand workunderhis directionasrequired. The

investigation should generallybecarriedout inaccordancewiththe

relevant sectionsof AS 1725 SAASite InvestigationCode andNAASRA

(1982)guidelinesandshould includethefollowing:

4.1 Preliminary Investigation

This investigation shouldbedirectedatlocatingthe most likely

sitesin theareaconcernedwithaviewtoestablishingwhere more

7.


9/25

intensivesubsurface investigation should becarried out. This

phaseof theworkmay be eliminated in the case of an extension of

anexistingquarry. Notethat requirements with regard to

aboriginal,archeological and other prescribedsitesmustbe

complied with at al l times and formal clearancesmustbe obtained

beforemoredetailed investigationscommence.

The investigation should initially bebasedon geologicalmapsand

on the information supplied by the preliminary Departmental survey

whichshould beexaminedand confirmed.

A reconnaisance survey should becarriedout and surface

outcropping and exposuresin road cuttings,excavations etc shouldbeexamined. Consideration should be given to access in both wet

and dryconditions,and environmental factors.

Excavation of exploratory trenches and the use of geophysical

methodssuch as siesmic surveys may be undertaken atthis time

provided al l relevant clearanceshave beenobtained.

Testingofsamplescollectedshould becarriedout. Usually

testing for LA Abrasion is the best indicatorof rock suitability.

Howeversurfacesamplesmay be considerablysofterormore

weatheredthan subsurface material.

The geologist should select potentially suitable siteson the basis

ofthissurvey,drawup site investigationplans for the direction

of the drillersand assign apriorityto the detailed investigation

ofeach site.

4.2 Detailed Investigation

Detailed investigationsshould becarriedout sequentially at

preferred sitebasedon the preliminaryinvestigation until a

suitable site is confirmed.

The aim ofthis investigation is toestablishthe quality and

quantityof rockavailable,to assess itssuitability to f u l f i l the


10/25

requirementsofits intended use,and toprovidethenecessary

factual informationtoassisttenderers assessthesite fromthe

pointofviewofcarryingoutquarrying, crushingandscreening

operations. This investigationshould includetheaspects listed

inthefollowingparagraphs. Whereextensionof anexistingquarry

is al l that is involvedthisphaseof theworkmay bereducedas

considered appropriateby thegeologist.

4.2.1 GeologicalMapping

Alocalmap of thesite shouldbeprepared usingasuitablescale

and includethefollowing information i f relevant:

(a) Topographical features-depressions,gullies, saddles

locally steeporflat areas,swampygroundandlikelymeans

of accessandlocationofsuitableareas for plantand

stockpiles.

(b) Geological surface features-rock outcrops, colluvial,

elluvialandalluvialdeposits.

(c)Rockandsoil features-rockandsoil typesandtheir

boundaries, alteredorweatheredrock, mineralizedzonesetc.

(d) Geological structures- thefrequency, position, attitudes

and descriptionofstructuresandstructuraldefects.

4.2.2 DiamondCore Drilling

Adiamondcoringprogramshouldbecarriedout ateach sitebeing

investigated. Coreholes shallbedrilledon agrid patternto

proveatleast150% of therequired rockvolume. Nolessthan

fourdiamondcore holes shallbedrilled. Thegridpattern,

spacingsandanglesofdrilling etc. shouldbevariedtosuit

siteconditionsasdirectedby theGeologist (see 4.1). Drills

shouldbe NQ or NQ3typedependingonsubsurface rockcondition.


11/25

Adetailed drillers log of alloperations and observations should

be recorded at the time the cores are taken. Acopyof the log

should be sent to the Materials Engineer and the Divisional

Engineer and acopyshould be retained by the drillers.

This log should include thefollowinginformation:

(a

(b

(c

(d

(e

(f

(g

(h

(i

(j

(k

(1

(m(n

(0

(P

(q

Project

Location,local description,AMG co-ordinates and distance

fromroad and road SLK.

HoleNumber

Date

TypeofdrillingandequipmentBit type and diameter

Barrel type

Depth, l i f t location

Directionof hole and anglefromhorizontal

Drilling time

Fluidtype,circulation rate and loss

Coreloss

Drillingcompanyor organisationSignature andnameof logger

Casing type and size

Groundwaterlevel

Remarksincluding descriptionof core,hardnessoreaseof

penetrationandchangesin penetration rate or feed pressure,

levelsatwhich fluid islost,and casing operations.

Coresitesshould be identifiedwithsteelpegswithaluminium

tags or analternative simialrpermanentmethod (see 4.3).

All cores shall be placed insuitablecoreboxesappropriately

identified and labelled and shall be consigned to and stored at

theMainRoadDepartment,Materials Engineering Laboratory, 50

PilbaraStreet, Welshpool. Plasticpipe orsimilarmaterial

should be placed in the coretraytosubstituteforlost core and

markedaccordingly.

10.


12/25

Core samplesare to beexamined indetail by the Geologist and

geological logs prepared including appropriate data fromthe

original drillers log, the following information and other

relevant detail.

(a) The location of the drill hole referenced to AMG

Co-ordinates.

(b) The distributionof themain soil and rock types and their

description in engineering geological terminology, (see AS

1725)

(c) The distribution ofoverburdenanddecomposedzonesand adescriptionof the materials.

(d) The positions and descriptions of defects and thickness of

bedsi fstratified (abundances and nature of joints,seams,

fractures,bedding,cleavage etc).

(e)Coreloss.

(f)Waterinflows,waterlevelswithdates and times of

observations.

(g)Dateofdrilling and logging.

(h)Presenceof asbestiform minerals.

The cores shall be colourphotographedin thesampletrays with

the shallowest core at the top lefthandcorner ofeachtray.

The cores should be surfacewettedtoshowgrain detail. A

typical photographisshowninAppendixB. Thosecores or parts

of cores notusedfor petrographic examination ortesting shall

be retained in storage at MED for aminimumperiod of 12months

beyondcompletion of the associated quarrying contract. Cores

11.


13/25

for physicalandmechanical testing shallbesubmittedfor

testinginaccordance with paragraph4.4which shallbearranged

bytheMaterialsEngineeron therelevant sectionsofcoreas

recommendedby theGeologist.

4.2.3 PercussionDril ling

Wheredirectedby theGeologist, trial percussiondrillingmay be

carriedout toprovide informationonoverburden thicknessand

rockqualityand anassessment of therateofdrilling forthe

informationoftenderers. Rockchippingsanddust recovered from

percussiondrilling shouldberetainedforinspectionby the

Geologist. Drill holes shouldbepeggedandidentifiedwithsteelpegswith aluminium tagsor analternative similar

permanentmethod, (see4.3)

Adetailed drillers logofal loperationsandobservations should

be recordedat thetimethedrilling iscarried out. Acopyof

the log shouldbesentto theMaterialsEngineerand the

Divisional Engineerand acopy shouldberetainedby the

drillers.

The log shouldincludethefollowing information:

(a

(b

(c

(d

(e

(f

(g

(h

(i

(j

(k

(1

(m

(n

(0

Project

Localmapshowing accessanddrill sites

HoleNumber

Date

Typeofdrillingandequipment

Bit typeadiameter

Overburden Depthandtype

Casingtypeandsizei f used

Directionofholeandangle from horizontal

Drilling time

Penetrationrate

rocktypeandconditionandchangesineither

Depth

Groundwaterlevel

Remarks

12.


14/25

4.2.4 Trial Blasting

Wheredirected by the Geologist trial blasting should becarried

out to provide largesamplesfor examination and testingand to

showfracture characteristics. Additionaltrial blastings may be

carried outwherecertainminimumrock sizesmustbe achieved for

suchusedas batterprotection. Wheretrial blastsare carried

out the hole diameter, hole spacing,powderfactors,stemmingand

detailsof delays shall be recorded.

4.3 Site Identification

The following items shall be clearly identified with appropriatelymarkedsteelpegsor other similarsemi-permanentmarkers.

(a) Quarryreserve boundaries

(b) Quarryarea boundaries

(c) Coreand percussion hole locations

(d) Blasting sitelocations

(e) Samplesitelocations

Divisional survey staff shall tie-in all locations with AMG

Co-ordinates, land boundaries and reference to the nearest road.

4.4 Testing

Samplesfortestingare to be obtainedfrom drill cores in

preference to blasted rockfragmentsunless the Geologist considers

the latterto be representative of the bulk of the source rock.

Testing is to be carriedout on the horizons or core sections

requested by the Geologist. Coresshould preferably be out inhalf

parallel to the long core axis and halftested and halfretained

for future record.

Theminimumtestsrequired and theminimuimmassofsamplerequired

for such testing isshownin 4.4.1 to4.4.4. Additionaltests may

be specified by the Geologist, the Materials Engineer or the

Engineer requesting the investigation.

13,


15/25

4.4.1 RockforUse asSealingAggregate

TEST METHOD TYPICALROCK LENGTHSAMPLE OF 47mm (NQ)SIZEkg DIAMCORE

(m)

PetrologicalAssessment

Los Angeles Abrasion

Aggregate Polishing

ResistancetoStripping

notspecified 2

MRD WA220.1 25

(singledetermination)

AS1141.40& 42

AS1141.50

(Optionalatinvestigation stage)

4.4.2 RockforUse asConcreteAggregate

15

10

0.5

5

3.5

2.5

TEST METHOD TYPICALROCKSAMPLESIZEkg

LENGTHOF47mmDIAMCORE

(m)

PetrologicalAssessment

Los Angeles Abrasion

Alkali Reactivity

UnsuitableSulphides

Not Specified 2

MRD WA220.1 25(singledetermination)

.AS1141 Sect39 10

.AS1141section.38

i f required.

Not Specified

0.5

6

2.5

4.4.3 RockforUse asRoadbase

TEST METHOD TYPICALROCKSAMPLESIZEkg

LENGTHOF47mmDIAMCORE

(m)

Petrological Assessment NotSpecified

Los Angeles Abrasion MRD WA220.1

(singledetermination)

LinearShrinkage(onfines) MRD WA123.1

2

25

0.5

6

0.5

14.


16/25

4.4.4 RockforUse asRockArmourfor Batter&EmbankmentProtection

TEST METHOD TYPICALROCK LENGTHSAMPLE OF47mmSIZEkg DIAMCORE

(m)

PetrologicalAssessment NotSpecified 2 0.5

Los Angeles Abrasion MRD WA220.1 25 5

(single determination)

4.5 Reporting

Full detailsofthecompletegeologicalinvestigation shouldbesystematicallyreported. Thereport should include engineering

interpretationsoftheinformation obtainedtoassisttheMRD to

decidewhethertoproceed withuseof asiteand toformulatean

appropriate specification. This information should include:

(a) Site identification includingMRDDivision,nearest road&

AMGco-ordinates.

(b) A mapshowingthegeneral locationof thesiteinrelationto

roads etc.

(c) A mapshowingdetailoftheproposedquarry reserveand

quarry area boundaries referencedtoAMGCo-ordinatesand

site locationmarkers.)

S

(d) Ageologicalmapof thesite includingcore sitelocations

andproposedquarryj boundaries referencedtosite location

markersandAMGCo-ordinates,levelstoAustralian Height

Datum. Unsuitable areas shouldbeclearlyshown.

\

(e) Corelogsandcorephotographs (colour).

(f) Reportonpetrographic studies.

(g) MRDTest Results is completed.

15.


17/25

(h) Reportonpercussion drilling rates(whereinvestigated).

(i) Factual detailsontrial blastings (ifcarriedout).

(j) Interpretationofcore logsandpetrographic studies interms

of engineeringuse andquarry workability includingcomment

on likely problemswith drilling blasting,crushingandfinal

particleshapeanddurability.

(k) Quality Estimates includingoverburdendepthandquantity.

(1) Comment onaccesstosite.

(m) Comment onadequacyofroomfor plantandstockpiles.

(n) Comment ontopographinrelationtofacedevelopment,and

needforpumpingtoremovestormwater.

(o) Comment ontrail blasting.

(p) Areportonslope stabilityandpredicted stability afterquarrying, i f appropriate.

(q) Comment on anyspecialrequirementswith regardtoaboriginal

or archeologicalsitesorenvironmental matterswhichmay

influence sitedevelopmentand use.

The report shouldbewritten insucha way toclearlydistinguish

mattersoffactfrommatterofinterpretationandopinion,eg. a

test result isamatteroffactwhilecomment ontheadequacyfo

the result inrelationtotheuse ofthe material isamatterof

interpretation. Reportingofthe results shouldhencebeseparated

fromcomment onthe value.

Somesectionsofthe geological reportmay bedifficulttoseparate

intofactsandopinions. If indoubt the section shouldbetreated

as opinionorinterpretationoffacts. Anexampleofthis isa

petrology report.

16.


18/25

5. COREREGISTER

All cores shallberegisteredin thenormalsampleregistersat the J J G

PunchMaterials Engineering Laboratoryandgivensamplenumbers

inaccordance with routine practice. Inadditionaseparate core register

shallbemaintained. This core register shall includedateofcoring,

logging,photographingandregistering plus provision for recordingthe

names ofpersonsinspectingthecoresand thecompaniesthey represent

plusthedateofviewing. All cores shallberegisteredin thecore

register appropriatelyidentified withthesamplenumber.

6. MATERIALS ENGINEERINGREPORTS

The Materials Engineer shall reporton thesuitabilityof thesite being

investigated for its intended use. This report willbebasedon the

GeologicalReportandlaboratorytest resultsandforwardedto the

Divisional Engineer concernedfor his action.

The report shall includerecommendationsregarding:

(a) Thesuitabilityof thesitetoprovide satisfactorymaterial.

(b) Material specifications.

(c) Provisionofinformationtotenderers (see7).

7. PROVISION OF INFORMATION FOR TENDERERS

The Divisional Engineer shall collect information suitable for releaseto

Tenderersasstatedin 6(c). This shall consistofcopiesoffactual

informationandinterpretationswithaclassificationof theinformation

clearly describing i ts status.

The Divisional Engineer shallberesponsible for forwardingthe

appropriate informationto theSpecifications Engineer followinghis

decisiontoproceedwiththe use of asite.

17.


19/25

8. QUARRYSITE ACQUISITION

TheDivisionalEngineermustinitiate actiontoacquire legal rightto

use asite before proceedingwith exploitationofthat site. Thisaspect

isbeyond the scope of thematerials investigationhenceproceduresare

not dealt withinthisreport.

18.


20/25

REFERENCES

STANDARDSASSOCIATIONOFAUSTRALIA:

AustralianStandard1141SamplingandTesting Aggregates

1725 Site InvestigationCode

2758(Part1&2)AggregatesandRockfor

EngineeringPurposes

NATIONAL ASSOCATIONOFAUSTRALIAN STATEROADAUTHORITIES(1982):

"PavementMaterials Part1 -Search". (NAASRASydney).

CLASSIFICATION

SUBJECTAREA

KEYWORDS

Internal

Geomechanics

QuarriesAggregates

Geological Investigations


21/25

APPENDIXA

CPMNETWORKQUARRYSITEINVESTIGATION


22/25

6eOCO&/CAC

' PHOTO '

(oe)

QPCA^/

(Me)O

issue

LIHSCY NOTKeSITES OF&UTKY(OS) (0&)

I CMP

7^/JUKS

/A/QU//(IE.e>

(D)

AA/O A60KISIA/AL

S/re SCIKVSY

(DB)

SJTeCCBAKAMCe.

scA&r(MB)

(Me) ACQt//^ IT'OAJ

OFFICEK KB'BPbJUStBce POX

OK&AMI^T/OAJ OF ACT/OA/

APPCA/D/X A


23/25

APPENDIXB

TYPICALCORE PHOTOGRAPH


24/25

GNHT 2915fKr

21 I M TRAiYi 3 r r

M A B E L r DOWNS

r FI rriT


25/25

Investigation Guide for Quarry Site Location and Assessment - January 1990 - R D Leach ^26amp^3B R Saligari.rcn-D12^23221547

Documents