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Bougainville

Producer in Papua New Guinea with commodities Copper, Gold, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10304795
MAS/MILS ID 6040200001
Record type Site
Current site name Bougainville
Alternate or previous names Panguna Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 155.49871, -6.33117 (WGS84)
Elevation 700
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Papua New Guinea(country)

Geographic areas

Country
Papua New Guinea

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Bornite Unknown
Chalcopyrite Unknown
Galena Unknown
Gold Unknown
Magnetite Unknown
Molybdenite Unknown
Pyrite Unknown
Quartz Unknown
Silver Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) 155.49871, -6.33117
ListMap

Economic information

Ore body information

  • Thickness 750M
    Length 1830M
    Width 1220M
    Area 34.96HA
    Depth to top 31M
    Field Value
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 MASSIVE
    Type of Orebody #2 DISSEMINATED
    Shape of Orebody #2 IRREGULAR
    Type of Orebody #3 OTHER
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin CONT METASOMATIC
    Primary Ore Control IGNEOUS
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SERICITIC
    Type of Wallrock Alter. #2 PROPYLITIC
    Type of Wallrock Alter. #3 ADV ARGILLIC
    Minimum Depth to Top 0
    Total Surface Area (HA) 34.96
    Date of Last Modification 820624

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1964
Mining method Open Pit
Year of first production 1972
Milling method Flotation

Mining district

District name Panguna

Mineral rights holdings

Type of mineral rights State Lease

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Bougainville Copper Ltd.
    Home office Papua
    Year 1990
  • Type Owner
    Owner Conzinc Rio Tinto Of Australia Ltd. (Cra)
    Interest 53.6
    Home office Papua
    Year 1990
  • Type Owner
    Owner Papua New Guinea Government
    Interest 19.1
    Home office Papua
    Year 1990

Comments on the ownership information

  • CRA LTD. IS 49% OWNED BY RTZ CORP.

Production statistics

  • Year 1972
    Description Conc. - 28.3% Cu, 27.3 G Au, 69.3 G Ag 438100 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 69g/mt
    Major Conc. Gold Gold 27g/mt
    Major Conc. Copper Copper 28wt-pct
  • Year 1972
    Description Ore - 0.76% Cu, 0.77 G/Mt Au 21890000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1973
    Description Conc. - 28.1% Cu, 31.6 G Au, 69.0 G Ag 650200 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 69g/mt
    Major Conc. Gold Gold 32g/mt
    Major Conc. Copper Copper 28wt-pct
  • Year 1973
    Description Ore - 0.73% Cu, 1.03 G/Mt Au 21140000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1974
    Description Conc. - 28.7% Cu, 32.0 G Au, 72.3 G Ag 640800 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 72g/mt
    Major Conc. Gold Gold 32g/mt
    Major Conc. Copper Copper 29wt-pct
  • Year 1974
    Description Ore - 0.70% Cu, 1.02 G/Mt Au 30140000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1975
    Description Conc. - 28.9% Cu, 30.5 G Au, 71.0 G Ag 596000 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 71g/mt
    Major Conc. Gold Gold 31g/mt
    Major Conc. Copper Copper 29wt-pct
  • Year 1975
    Description Ore - 0.64% Cu, 0.80 G/Mt Au 31080000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1976
    Description Conc. - 29.6% Cu, 33.9 G Au, 76.1 G Ag 596800 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Gold Gold 34g/mt
    Major Conc. Copper Copper 30wt-pct
    Minor Conc. Silver Silver 76g/mt
  • Year 1976
    Description Ore - 0.64% Cu, 0.87 G/Mt Au 31210000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1977
    Description Conc. - 29.6% Cu, 36.3 G Au, 77.0 G Ag 615600 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Gold Gold 36g/mt
    Major Conc. Copper Copper 30wt-pct
    Minor Conc. Silver Silver 77g/mt
  • Year 1977
    Description Ore - 0.61% Cu, 0.90 G/Mt Au 34110000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1978
    Description Conc. - 30.2% Cu, 35.5 G Au, 79.8 G Ag 648600 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Gold Gold 36g/mt
    Major Conc. Copper Copper 30wt-pct
    Minor Conc. Silver Silver 80g/mt
  • Year 1978
    Description Ore - 0.60% Cu, 0.82 G/Mt Au 38120000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1979
    Description Conc. - 29.2% Cu, 33.7 G Au, 76.3 G Ag 584700 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 76g/mt
    Major Conc. Gold Gold 34g/mt
    Major Conc. Copper Copper 29wt-pct
  • Year 1979
    Description Ore - 0.55% Cu, 0.75 G/Mt Au 36170000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1980
    Description Conc. - 28.8% Cu, 27.5 G Au, 72.2 G Ag 510400 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Gold Gold 28g/mt
    Major Conc. Copper Copper 29wt-pct
    Minor Conc. Silver Silver 72g/mt
  • Year 1980
    Description Ore - 0.46% Cu, 0.50 G/Mt Au 37620000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1981
    Description Conc. - 28.7% Cu, 29.2 G Au, 73.5 G Ag 576400 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Copper Copper 29wt-pct
    Minor Conc. Silver Silver 74g/mt
    Major Conc. Gold Gold 29g/mt
  • Year 1981
    Description Ore - 0.51% Cu, 0.59 G/Mt Au 37530000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 1wt-pct
  • Year 1982
    Description Conc. - 28.4% Cu, 29.3 G Au, 72.1 G Ag 598600 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 72g/mt
    Major Conc. Gold Gold 29g/mt
    Major Conc. Copper Copper 28wt-pct
  • Year 1982
    Description Ore - 0.47% Cu, 0.60 G/Mt Au 41740000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1983
    Description Conc. - 28.8% Cu, 28.3 G Au, 74.4 G Ag 636900 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 74wt-pct
    Major Conc. Gold Gold 28g/mt
    Major Conc. Copper Copper 29wt-pct
  • Year 1983
    Description Ore - 0.46% Cu, 0.55 G/Mt Au 47730000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1984
    Description Ore - 0.42% Cu, 0.48 G/Mt Au 46520000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 0g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1984
    Description Conc. - 30.3% Cu, 28.9 G Au, 81.9 G Ag 542300 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 82g/mt
    Major Conc. Gold Gold 29g/mt
    Major Conc. Copper Copper 30wt-pct
  • Year 1985
    Description Ore - 0.42% Cu, 0.42 G/Mt Au 50070000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 0g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1985
    Description Conc. - 30.1% Cu, 24.7 G Au, 79.3 G Ag 581800 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Gold Gold 25g/mt
    Major Conc. Copper Copper 30wt-pct
    Minor Conc. Silver Silver 79g/mt
  • Year 1986
    Description Ore - 0.42% Cu, 0.48 G/Mt Au 47890000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 0g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1986
    Description Conc. - 30.5% Cu, 27.9 G Au, 85.9 G Ag 586600 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 86g/mt
    Major Conc. Gold Gold 28g/mt
    Major Conc. Copper Copper 31wt-pct
  • Year 1987
    Description Ore - 0.41% Cu, 0.43 G/Mt Au 48200000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 0g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1987
    Description Conc. - 30.4% Cu, 25.8 G Au, 86.4 G Ag 585500 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 86g/mt
    Major Conc. Gold Gold 26g/mt
    Major Conc. Copper Copper 30wt-pct
  • Year 1988
    Description Ore - 0.41% Cu, 0.41 G/Mt Au 47690000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 0g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1988
    Description Conc. - 30.1% Cu, 25.1 G Au, 87.7 G Ag 552000 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 88g/mt
    Major Conc. Gold Gold 25g/mt
    Major Conc. Copper Copper 30wt-pct
  • Year 1989
    Description Ore - 0.44% Cu, 0.50 G/Mt Au 18510000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 0wt-pct
  • Year 1989
    Description Conc. - 30.6% Cu, 31.0 G Au, 92.2 G Ag 222460 Mt Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Conc. Silver Silver 92g/mt
    Major Conc. Gold Gold 31g/mt
    Major Conc. Copper Copper 31wt-pct
  • Year 1990
    Description Ore 0 Mt Ore
  • Year 1990
    Description Conc. 0 Mt Concentrate
  • Year 1991
    Description Ore 0 Mt Ore
  • Year 1991
    Description Conc. 0 Mt Concentrate

Reserves and resources

  • Type In-situ
    Estimate year 1977
    Measured 760000000mt ore
    Demonstrated 760000000mt ore
    Total resources 760000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.45 wt-pct Copper Major 1977
    Gold Au 0.51 g/mt Gold Major 1977
    Silver Ag 2.06 g/mt Silver Minor 1977
  • Type In-situ
    Estimate year 1988
    Indicated 710000000mt ore
    Demonstrated 710000000mt ore
    Total resources 710000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.4 wt-pct Copper Major 1988
    Gold Au 0.47 g/mt Gold Major 1988
  • Type In-situ
    Estimate year 1989
    Measured 691000000mt ore
    Demonstrated 691000000mt ore
    Total resources 691000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.4 wt-pct Copper Major 1989
    Gold Au 0.47 g/mt Gold Major 1989
  • Type In-situ
    Estimate year 1989
    Measured 691000000mt ore
    Demonstrated 691000000mt ore
    Total resources 691000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.4 wt-pct Copper Major 1989
    Gold Au 0.47 g/mt Gold Major 1989

Comments on the reserve resource information

  • TOTAL RESERVES AS OF 12/31/86; USED IN 1987 EVALUATION.

Workings at the site

  • Type of workings Surface
    Area 40HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 38
    Avg. Overburden Thickness 40
    Primary Material Cover SAND, SILT
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 42
    Capacity 148570
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 13200
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1986

Comments on other economic factors

  • COVER MATERIAL IS ACTUALLY VOLCANIC ASH

Reference information

Bibliographic references

  • Reserve-Resource

    ENGINEERING AND MINING JOURNAL, "BOUGAINVILLE COPPER

  • Reserve-Resource

    WITHDRAWS REMAINING PERSONNEL," MARCH 1990, P. 15.

  • Reserve-Resource

    MINING JOURNAL, 4/13/90, P. 307.

  • Deposit

    BOUGAINVILLE COPPER LTD. ANNUAL REPORTS, 1973, 1974

  • Deposit

    LETTER, 1975, ERICKSON, ASST. GEN. MANAGER PRODUCTION, BOUGA

  • Deposit

    COPPER LTD.

  • Deposit

    LETTER, 1975, BARRY, MANAGER-PUBLIC RELATIONS, BOUGAINVILLE

  • Deposit

    COPPER LTD.

  • Deposit

    BLAKE, D.H., "BOUGAINVILLE ISLAND NORTH AND SOUTH," 1967.

  • Deposit

    WORLD MINING, "BOUGAINVILLE COPPER WILL BE GIANT PIT IN HIGH

  • Deposit

    MOUNTAIN RAIN FOREST," MARCH 1969.

  • Deposit

    BLACKWELL, M.R.L., "EVALUATION AND PLANNING," FROM THE 9TH

  • Deposit

    INTERNATIONAL SYMPOSIUM FOR DECISION MAKING IN THE MINERAL

  • Deposit

    INDUSTRY, JUNE 1990.

  • Deposit

    KNIGHT, C.L., FRASER, R.B., AND BAUMER, A., "GEOLOGY OF THE

  • Deposit

    BOUGAINVILLE COPPER OREBODY," BULLETIN #141, 1973.

  • Deposit

    MINING WORLD, "BOUGAINVILLE COPPER--BIGGEST BONANZA YET AS

  • Deposit

    COPPER," APRIL 1974, PP. 64-65.

  • Deposit

    BROWN, M.J.F., "A DEVELOPMENT CONSEQUENCE--DISPOSAL OF

  • Deposit

    MINING WASTE ON BOUGAINVILLE, PAPUA NEW GUINEA," 1974.

  • Deposit

    PIERCY, PAUL, "CONCENTRATE PUMPING AND HANDLING AND SHIPPING

  • Deposit

    AT BOUGAINVILLE COPPER LTD.," IN THE AUSTRALIAN CONFERENCE

  • Deposit

    JUNE 1975.

  • Deposit

    LYONS, LEO AND MOLLY, "PAPUA NEW GUINEA: THREE," IN WORLD

  • Deposit

    MINING, MAY 1977, PP. 44-47.

  • Deposit

    MINER NEWSPAPER, "BOUGAINVILLE LIFTS CAPACITY," MARCH 28-

  • Deposit

    APRIL 10, 1983, P. 7.

  • Deposit

    MINING WEEK, "BOUGAINVILLE MEETS THE CHALLENGE," APRIL 6,

  • Deposit

    1984.

  • Deposit

    MINER NEWSPAPER, "PROFIT SOARS, BUT BOUGAINVILLE UNEASY,"

  • Deposit

    MAY 7-20, 1984, P. 3.

  • Deposit

    HEMPENSTALL, J. AND HILL, R., "BOUGAINVILLE INCREASES

  • Deposit

    EFFICIENCY WITH COMPUTERS," WORLD MINING, FEBRUARY, 1980,

  • Deposit

    P. 54.

  • Deposit

    SASSOS, MICHAEL P., "BOUGAINVILLE COPPER: TROPICAL COPPER

  • Deposit

    WITH A GOLDEN BLOOM FEEDS A 130000-MT/D CONCENTRATOR,"

  • Deposit

    ENGINEERING AND MINING JOURNAL, OCTOBER 1983, PP. 56-61.

  • Deposit

    O'FAIRCHEALLAIGH, CIARAN, "THE MARKETING OF COPPER

  • Deposit

    CONCENTRATES: THE CASE OF BOUGAINVILLE COPPER LIMITED,"

  • Deposit

    MINING MAGAZINE, JUNE 1984, PP. 568-573.

  • Deposit

    ARCHER, IAN, "REVEGETATION AT BOUGAINVILLE COPPER," MINING

  • Deposit

    MAGAZINE, OCTOBER 1984, PP. 307-313.

  • Deposit

    DEANS, B.L. AND GLATTHAAR, J.W., "SMALL THICHENERS YIELD BIG

  • Deposit

    AT BOUGAINVILLE," ENGINEERING AND MINING JOURNAL, OCTOBER

  • Deposit

    1986, PP. 36-40.

  • Deposit

    MINING JOURNAL, "PNG TO CONSOLIDATE MINERAL INTERESTS,"

  • Deposit

    MARCH 13, 1987, P. 195.

  • Deposit

    HARDER, PAUL, "BOUGAINVILLE NAINTAINS EFFICIENCY," IN

  • Deposit

    INTERNATIONAL MINING, NOVEMBER 1987, PP. 10-13.

  • Deposit

    MINING JOURNAL, "BOUGAINVILLE DEVELOPMENTS," APRIL 22, 1988,

  • Deposit

    P. 322.

  • Deposit

    MINING JOURNAL, "BOUGAINVILLE LIFTS PROFITS," FEBRUARY 19,

  • Deposit

    1988, P. 145.

  • Deposit

    MEETING CONCERNING BOUGAINVILLE COPPER, APRIL 25, 1987.

  • Deposit

    CLARK, GERALD H., GEOLOGY AND RESOURCE ESTIMATION AT THE

  • Deposit

    PANGUNA PORPHRY COPPER/GOLD MINE AT PAPUA NEW GUINEA, PUB.

  • Deposit

    BY AUSTRALASIAN INSTITUTE OF MINING AND METALLUGY, 8/87.

  • Deposit

    MINING JOURNAL; BOUGAINVILLE SPECULATION, VOL. 316, NO.

  • Deposit

    8114, 3/22/91, P. 232.

  • Deposit

    MINING JOURNAL; BOUGAINVILLE PEACE ACCORD, VOL. 316, NO.

  • Deposit

    8106, 1/25/91, P. 54.

  • Deposit

    WELSH, T.C., THE MINERAL INDUSTRY IN PAPUA NEW GUINEA, PUB.

  • Deposit

    BY THE AUSTRALASIAN INSTITUTE OF MINING AND METALLURGY.

  • Deposit

    THE NORTHERN MINER; BOUGAINVILLE MINE MAY BE REOPENED,

  • Deposit

    2/25/91, P. 18.

  • Deposit

    MINING JOURNAL; BOUGAINVILLE PEACE TALKS POSTPONED, 9/6/91,

  • Deposit

    P. 166.

  • Deposit

    MINING JOURNAL; COUNTING THE COST AT BOUGAINVILLE, 2/15/91,

  • Deposit

    P. 109, 110.

  • Deposit

    MINING JOURNAL; CRA UNREALISTIC OVER COPPER MINE SALE,

  • Deposit

    4/12/91, P. 278.

  • Deposit

    METALS WEEK; 4/20/92, P. 7.

  • Deposit

    MINING JOURNAL; BOUGAINVILLE FIGHTING CONTINUES, 6/5/92,

  • Deposit

    P. 411.

  • Deposit

    AMERICAN METAL MARKET, V 103/N 2, 1/4/95, P.2.

  • Deposit

    ANDREW, R.L., PORPHYRY COPPER-GOLD DEPOSITS OF THE SOUTH-

  • Deposit

    WEST PACIFIC, MINING ENGINEERING, 1/95, P.33-38.

  • Deposit

    RTZ CORP., 1994 20-F, P.22.

General comments

Subject category Comment text
Deposit AVE.DENSITY OF ORE=4.15GM/CC. DIMENSION OF OREBODY TO 0.3% C OUNDARY. TONNAGE & GRADE BASE UPON 220K FT. OF DRILLING @ 40 ID. PYRITIC HALO AROUND OREBODY. LOWGRADE CORE OF GRANODIORI . PROD. EST. AT 150,000TONS COPPER AND 500K OZ.GOLD IN 30% C ONCENTRATE. COPPER MINERALIZATION ASSOC. WITH PORYHRY STOCKS OVERBURDEN REMOVED 15,757,000 CU. YDS. PIT DEMENSIONS, AT RIM, 2,135M BY 1,525M BY 305M-.3% CU CUT- 76-RCD 601-611-ORE GRADE VARIABLE FROM .30 TO .99%CU,TOTAL C GRADE IN 1972 WAS .25%CU.ONE PLAN TO DROP FEED GRADE .01-. 76-RCD 63%-OVERBURDEN STRIPPED HYDRAULIKALLY,STRIPPING LEADS SHOVELS BY 1 MONTH.ANDESITES&DIORITE BLASTING BY 5 BUCYRUS 45R ROT.DRILLS USING IREGEL 360B SLURRY(.24 LB/TON MILLED) HOLES 56 FT.DEEP DRILLED/SHIFT,40 SHIFTS/WK.,3200 TO 4000 ORE BROKEN/HOLE.OPERATIONS BEGAN IN EARLY 1972,BY JUNE 197 BENCHS DEVEL. WITH LOWEST ALMOST LEVEL WITH PRIMARY CRUSHI PLANT.BENCH HTS.50 FT WITH STANDING BENCH WDH. OF 50 FT.AN ING BENCH WDTH.OF 125 FT.ORE EXCAVATED BY SIX 17 CU.YD.P&H SHOVELS(DENSITY OF BROKEN ORE IS 1.32 TONS/CU.YD.) WITH PR IVITY OF 13000 TONS/SHOVEL SHIFT,LOADING INTO 52 88-TON EU TRUCKS WITH AN EXPECTED PRODUCTIVITY OF 2100 TONS/TRUCK/SH HAULAGE >1 MILE TO PRIM.CRUSHING PLANT AT NE EDGE OF PIT.W HAULAGE >2 MILE TO THE SW AND DUMPED ON BOTH SIDES OF THE KAWERONG RIVER VALLEY,BEGINNING NEAR TO PIT AND EXTENDING THE VALLEY(WASTE IS CU-OXIDE ROCK & OVERBURDEN). 76-RCD 651-ORE FROM PIT IS CRUSHED TO<8 IN.BY 2 54 INCH GYRA UNITS THEN FED ONTO 2 54 INCH CONVEYOR BELTS WHICH LIFTS 5 IN 1/2 MILE TO COARSE ORE STOCKPILE ON OTHER SIDE OF MORON WHICH IS ABOVE THE FLOTATION PLANT,SECONDARY(SIX 84" CONES IARY(TWELVE 84" CONES) CRUSHING TO -1/2" SIZE TO 8 PRIM.BA MILLS TO FLOTATION CELLS(6 BANKS OF 18 CELLS/BANK-ROUGHER 3 BANKS OF 13 CELLS/BANK-CLEANER CELLS;2 BANKS OF 13 CELLS RECLEANER CELLS;4 BANKS OF 13 CELLS/BANK-SCAVENGER CELLS RECOVERY RATES FOR CU,AU&AG VARY WITH FEED GRADE(PRODUCES CONCENTRATE AT FEED GRADE OF .7% CU AND 25% CU CONC. AT FE GRADE OF .25% CU.TOTAL PLANT POWER CONSUMPTION OF 13 KWH/T POWER PLANT(OIL FIRED,GEN.CAP.OF 135 MW AT ANEWA BAY,DELIV PLANT AT 132 KV 50 HZ,STANDBY POWER OF 11 MW VIA 4 DIESEL AT PANGUNA TOWN 1.5 MILES FROM PLANT.CONCENTRATE CYCLONED AND SCREENED TO 99% -100 MESH F FEED TO PIPELINE,TO ANEWA BAY PORT SITE. 76-RCD 660- 27036 M PIPELINE OF 6" DIA.STARTS AT ELEV.OF 8 RISES TO 975 M AND IS DELIVERED TO PORT SITE FILTERING&DRY PLANT AT 80 M.ELEV.FINAL SHIPPED CONC. ASSAYS AS FOLLOWS:C %),AU(25-41GR/TONNE),AG(75GR/TONNE),FE(26%),S(31%),MOISTUR 76-RCD 040-WATER FOR CONC.PLANT PUMPED FROM KAWERONG&JABA RI 1.7 CU.M./SEC. 76-RCD 651-FLOT.PLANT TAILINGS PUMPED INTO JABA RIVER WHICH INTO SWAMPLAND(NO TAILINGS DAM BECAUSE OF SEISMIC ACTIVITY AREA. PRODUCTION DATA: WASTE(TONNES) ORE(DTONNES) CU(TONNES) AU(KG 1973 27,510,000 29,140,000 182,893 20,54 1974 25,860,000 30,140,000 184,107 20,50 76- COSTS OF PRODUCTION AND FINANCING IN 1972 WERE$3.30/TON, PAID TO GOVT.WAS$.74/TON(1.25%OF CU&AU VALUE).TAX FREE PER 1976,FIRST 20% OF GROSS IS NON-TAXABLE. TOTAL COST OF PROJECT ABOUT$436,200,000;BREAKDOWN:$55,440,00 QUISITION&PRE-PROD.DEVELOPMENT,$282,360,000 MINE,CONC.&SUP EQUIP.,$90,480,000 CONS.MGMT., ADMINS.&FINANCE,$7,920,000 CAPITAL&OTHER COSTS. OVERSEAS.

Reporter information

Type Date Name Affiliation Comment
Reporter 11-OCT-1995 Porter, Kenneth E. U.S. Bureau of Mines

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