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  3. Mineral Resource Data System (MRDS)

Ertsberg / Grasberg

Plant in Indonesia 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. Reporter information

Geologic information

Identification information

Deposit ID 10208264
MAS/MILS ID 5600370001
Record type Site
Current site name Ertsberg / Grasberg
Alternate or previous names Ertsberg Mine, Gunung Bijih Deposit, Grasberg, Big Gossan, Deep Ore Zone Doz., Dom, Intermediate Ore Zone Ioz, Wanagon, Grasberg Mine, Ertsberg East Underground Portion, Guru Ridge

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 137.13229, 4.08451 (WGS84)
Elevation 3503

Site location context

Political divisions (FIPS codes)

Indonesia(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Indonesia

Comments on the location information

  • MILS LAT/LONG IS APPROX. NEAREST CITY MAY BE APIMU AT S044500/ E1371000.

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Unknown
Gold Unknown
Magnetite Unknown
Silver Unknown

Nearby scientific data

Ore Body (1) 137.13229, 4.08451
ListMap

Economic information

Ore body information

  • Thickness 360M
    Length 250M
    Width 160M
    Depth to top 220M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 OTHER
    Shape of Orebody #1 PIPELIKE
    Primary mode of Origin METAMORPHISM
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 PROPYLITIC
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 820818
  • Thickness 360M
    Length 250M
    Width 160M
    Depth to top 220M
    Field Value
    MAS Matrix # 1
    MAS Column # 4
    Type of Orebody #1 OTHER
    Shape of Orebody #1 PIPELIKE
    Primary mode of Origin METAMORPHISM
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 PROPYLITIC
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 820818
  • Area 985HA
    Field Value
    Total Surface Area (HA) 985
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1936
Mining method Combined Methods
Year of first production 1972
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Irian Jaya

Mineral rights holdings

Type of mineral rights State Lease

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner P. T. Freeport Indonesia Co.
    Home office Indonesia
    Year 1996
  • Type Owner
    Owner Indonesian Government
    Interest 9.4
    Home office Indonesia
    Year 1994
  • Type Owner
    Owner P. T. Indocopper Investama Corp. (Private Investors)
    Interest 9.4
    Home office Indonesia
    Year 1994
  • Type Owner
    Owner Freeport-Mcmoran Copper And Gold Co.
    Interest 81.2
    Home office Nevada
    Year 1996
  • Type Owner
    Owner Rtz Corp.
    Home office United Kingdom
    Year 1996
  • Type Owner
    Owner Freeport Mcmoran Inc.
    Home office Louisiana
    Year 1996

Comments on the ownership information

  • FREEPORT MCMORAN INC. (FTX) OWNS 69.77% OF FREEPORT-MCMORAN COPPER AND GOLD INC.(FCX); (12/31/93) FREEPORT-MCMORAN COPPER AND GOLD INC. OWNS 49% OF P.T. INDO- COPPER INVESTAMA CORP. (PT-II); (12/31/93) AND 87.8% OF PT FREEPORT INDONESIA (PT-FI). RTZ CORP. OWNS THE REMAINING 12.2% OF PT FREEPORT INDONESIA (PT-FI). FMCG OWNS 86% OF GRASBERG ACCORDING TO RECENT ARTICLE IN MINING MAGAZINE, JUNE, 95, PP 373, 374.

Production statistics

  • Year 1973
    Description 1192000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Sulfur Sulfur 1192000mt
  • Year 1974
    Description 1993100 Mt Ore
  • Year 1975
    Description 2684200 Mt Ore
  • Year 1976
    Description 2883899 Mt Ore
  • Year 1977
    Description 3030399 Mt Ore
  • Year 1978
    Description 2690000 Metric Tons Of Ore.
  • Year 1979
    Description 2927000 Metric Tons Of Ore.
  • Year 1980
    Description 2977000 Metric Tons Of Ore.
  • Year 1981
    Description 3241000 Metric Tons Of Ore.
  • Year 1982
    Description 3511000 Metric Tons Of Ore.
  • Year 1983
    Description 4129000 Metric Tons Of Ore.
  • Year 1984
    Description 4788000 Metric Tons Of Ore.
  • Year 1985
    Description 1.98 % Cu, .59 G Au, 9.8 G Ag. 5247000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 10g/mt
    Major Gold Gold 1g/mt
    Major Copper Copper 2wt-pct
  • Year 1986
    Description 1.96 % Cu, .70 G Au, 10.4 G Ag. 5521000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 1g/mt
    Major Copper Copper 2g/mt
    Major Gold Gold 10g/mt
  • Year 1987
    Description 1.92 % Cu, .65 G Au, 10.4 G Ag. 5975000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 10g/mt
    Major Gold Gold 1g/mt
    Major Copper Copper 2wt-pct
  • Year 1988
    Description 2.05 % Cu, .66 G Au, 11.4 G Ag. 6812000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 11g/mt
    Major Copper Copper 2wt-pct
    Major Gold Gold 1g/mt
  • Year 1989
    Description 1.84 % Cu, .60 G Au, 10.3 G Ag. 9009000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1g/mt
    Major Copper Copper 2wt-pct
    Trace Silver Silver 10g/mt
  • Year 1990
    Description 1.61 % Cu, .98 G Au, 6.96 G Ag. 11569000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Silver Silver 7g/mt
    Major Ore Gold Gold 1g/mt
    Major Ore Copper Copper 2wt-pct
  • Year 1991
    Description 20805000 Metric Tons Of Ore.

Reserves and resources

  • Type In-situ
    Estimate year 1996
    Demonstrated 1899244000mt ore
    Total resources 1899244000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.17 wt-pct Copper Major 1996
    Gold Au 1.18 g/mt Gold Major 1996
    Silver Ag 3.78 g/mt Silver Minor 1996
  • Type In-situ
    Estimate year 1995
    Demonstrated 1125640000mt ore
    Total resources 1125640000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.3 wt-pct Copper Major 1995
    Gold Au 1.42 g/mt Gold Major 1995
    Silver Ag 4.06 g/mt Silver Minor 1995
  • Type In-situ
    Estimate year 1994
    Demonstrated 1074100000mt ore
    Total resources 1074100000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.31 wt-pct Copper Major 1994
    Gold Au 1.47 g/mt Gold Major 1994
    Silver Ag 4.04 g/mt Silver Minor 1994
  • Type In-situ
    Estimate year 1993
    Demonstrated 733173000mt ore
    Total resources 733173000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.47 wt-pct Copper Major 1993
    Gold Au 1.72 g/mt Gold Major 1993
    Silver Ag 3.87 g/mt Silver Minor 1993
  • Type In-situ
    Estimate year 1992
    Demonstrated 768045000mt ore
    Total resources 768045000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.45 wt-pct Copper Major 1992
    Gold Au 1.66 g/mt Gold Major 1992
    Silver Ag 3.86 g/mt Silver Minor 1992

Comments on the reserve resource information

  • NEWLY DISCOVERED GRASBERG IS BEING DEVELOPED AND PRODUCTION IS BEING EXPANDED TO 52,000 MTPD. ADDITIONAL EXPANSIONS TO 90000 MTPD AND 115000 MTPD AT $US 545 MILLION AND $US 140 MILLION RESPECTIVELY DUE FOR COMPLETION BY 1996. ADDITIONAL EXPANSION IS UNDERWAY TO 160,000 MTPD TO BE COMPLETED BY 1998. EXPANSION TO 190,000 MTPD HAS BEEN STUDIED AND APPROVED.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BENCH (BERM)
    Primary Material Cover HARD ROCKS
    Avg. Bench Height (meters) 10
    Capacity 6850
    Capacity Units MT ORE/DAY
    Unit Production Cost 3.84
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1980
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 2
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Capacity 11950
    Capacity Units MT ORE/DAY
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1990
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 2
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Capacity 14800
    Capacity Units MT ORE/DAY
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1990
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 2
    Mining Record # 3
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Capacity 23290
    Capacity Units MT ORE/DAY
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1990
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 2
    Mining Record # 4
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Capacity 32000
    Capacity Units MT ORE/DAY
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1990
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 2
    Mining Record # 5
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Capacity 52000
    Capacity Units MT ORE/DAY
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1990
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BLOCK CAVING 10-79
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. UNSUPPORTING MAY SLOUGH
    Mine Support Chars. UNKNOWN
    Capacity 9110
    Capacity Units MT ORE/DAY
    Unit Production Cost 8
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1980
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 2
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BLOCK CAVING 10-79
    Capacity 20000
    Capacity Units MT ORE/DAY
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1990

Reference information

Bibliographic references

  • Production

    MINING RECORD, PP. 6-7 (NOV. 6, 1991).

  • Ownership

    MINING MAGAZINE, "FURTHER EXPANSION FOR GRASBERG?", 06/95,

  • Ownership

    PP 373, 374.

  • Reserve-Resource

    E&MJ, P. 15 (AUG. 1990).

  • Reserve-Resource

    MIN. ACT. DIG. V. 18, N. 2, P. 3 (FEB. 28, 1991).

  • Reserve-Resource

    MINING ENGINEERING, P. 26 (JULY 1991).

  • Reserve-Resource

    FREEPORT MCMORAN COPPER CO, 1988 ANNUAL REPORT, P. 15.

  • Reserve-Resource

    FREEPORT MCMORAN COPPER CO, 1989 ANNUAL REPORT, P. 21.

  • Reserve-Resource

    FREEPORT MCMORAN COPPER & GOLD INC., 1990 ANN. REP., P. 14.

  • Reserve-Resource

    FREEPORT MCMORAN COPPER & GOLD INC., 1991 ANN. REP., P. 18.

  • Reserve-Resource

    SKILLING'S, 1/11/92, P. 8, 57.

  • Reserve-Resource

    MINING RECORD, 2/5/92, P. 19.

  • Reserve-Resource

    MINING RECORD, P. 13 (FEB. 9, 1994).

  • Reserve-Resource

    MINING JOURNAL, P. 125 (AUG. 17, 1994).

  • Reserve-Resource

    MINING RECORD, 3/10/93, P. 3.

  • Reserve-Resource

    FREEPORT MCMORAN INC., 1994 ANNUAL REPORT, P.6.

  • Reserve-Resource

    AMERICAN METAL MARKET, "IDONESIAN RESERVES HIGHER...

  • Reserve-Resource

    FREEPORT-MCMORAN HIKES ESTIMATES AT GRASBERG MINE",

  • Reserve-Resource

    12/12/95, P???.

  • Reserve-Resource

    FREEPORT MCMORAN COPPER & GOLD INC., 1995 ANNUAL REPORT,

  • Reserve-Resource

    P.5.

  • Deposit

    ADAMS, B.W. THE ERTSBERG PROJECT. MINING MAGAZINE, OCTOBER

  • Deposit

    JAKARTA, INDONESIA, 1969, P. 77-78.

  • Deposit

    ARGALL, G.O., JR. UNLOCKING ERTSBERG. WORLD MINING,AUGUST

  • Deposit

    1972, PP. 62-65.

  • Deposit

    RRASIAMINING. SAGA OF ERTSBERG, THE WEST IRIAN COPPER PROJEC

  • Deposit

    NOVEMBER 1978, PP. 34-36.

  • Deposit

    AUSTRALIAN MINING. ATTACKS ON WEST IRIAN MINE.

  • Deposit

    NOVEMBER 1977 P. 6.

  • Deposit

    CALDWELL, A.B. ERTSBERG-A GIGANTIC BASE METAL OUTCROUP.

  • Deposit

    MINING ENGINEER, AUGUST 1970, PP. 57-61.

  • Deposit

    ENGINEERING AND MINING JOURNAL .CONSTRUCTION BEGUN BY

  • Deposit

    FREEPORT SULPHUR ON LARGE WEST IRIAN COPPER PROJECT.

  • Deposit

    AUGUST, 1970, P. 109.

  • Deposit

    FLINT, D.E., ET. AL. THE GUNUNG BIJIH COPPER DEPOSIT, IRIAN

  • Deposit

    JAYA, INDONESIA. UNPUBLISHED.

  • Deposit

    FREEPORT MINERALS. ANNUAL REPORTS, 1973, 4, 5, 6, 7.

  • Deposit

    HUTABRAT, HAMONANGAN. COMPARISONS OF BENEFITS FOR INDONESIA

  • Deposit

    FROM ALTERNATIVE TYPES OF MINERAL AGREEMENTS FOR HARD

  • Deposit

    MINERALS. PP. 145-184.

  • Deposit

    MINING CONGRESS JOURNAL. CONSTRUCTION STARTED ON

  • Deposit

    INDONESIAN COPPER PROJECT. AUGUST, 1970.

  • Deposit

    MINING ENGINEERING. CALLED (MISSION IMPOSIBLE) FREEPORT'S

  • Deposit

    ERTSBERG COPPER PROJECT CONVINCES SKEPTICS. JANUARY 1973.

  • Deposit

    MINING JOURNAL. ERTSBERG-MAJOR INDONESIAN COPPER PROJECT.

  • Deposit

    JUNE 26, 1970, P. 589.

  • Deposit

    MINING JOURNAL. ERTSBERG MINE DEDICATION. MARCH 2,1973,P 17

  • Deposit

    MINING MAGAZINE. ERTSBERG COPPER ON SCHEDULE. MAY 1972,

  • Deposit

    P. 327.

  • Deposit

    MINING MAGAZINE. THE ERTSBERG PROJECT. OCTOBER 1973, PP. 310

  • Deposit

    MINING MAGAZINE. PIPELINING COPPER CONCENTRATES OVER

  • Deposit

    ADVERSE TERRAIN AT ERTSBERG. OCTOBER 1975, PP. 287-291.

  • Deposit

    MINING MAGAZINE. ERTSBERG COPPER MINE OFFICIALLY OPENED.

  • Deposit

    APRIL, 1973, P. 221-222.

  • Deposit

    SKILLINGS' MINING REVIEW. FREEPORT'S ERTSBERG COPPER

  • Deposit

    PROJECT. SEPTEMBER 19, 1970, PP. 9-13.

  • Deposit

    SKILLINGS' MINING REVIEW. FREEPORT ANOUNCES ENCOURGING

  • Deposit

    REPORT ON INDONESIA COPPER.OCTOBER 5, 1968, P. 14.

  • Deposit

    SKILLINGS' MINING REVIEW. FREEPORT'S MINERALS COMPANY

  • Deposit

    REPORTS IMPROVEMENT IN EARNING. FEBRUARY 3, 1979, P. 20.

  • Deposit

    SOETARJO GIGIT, ET. AL. MINERALS AND MINING IN INDONESIA.

  • Deposit

    MINISTRY OF MINES, 1969.

  • Deposit

    WILSON, F.K. THE ERTSBERG: A CASE HISTORY OF MINE

  • Deposit

    DEVELOMENT. MINING ENGINEERING, JUNE 1977,PP. 33-36.

  • Deposit

    WORLD MINING. ERTSBERG'S CONTRIBUTION TO FREEPORT EARNINGS.

  • Deposit

    JUNE 1974.

  • Deposit

    WORLD MINING. FREEPORT INDONESIA PLANS UNDERGROUND EXPLOR-

  • Deposit

    ATION OF EAST COPPER ZONE. JANUARY 1977, P. 57.

  • Deposit

    WORLD MINING. PRESIDENT SUHARTO DEDICATES ERTSBERG

  • Deposit

    COPPER. APRIL 1973, 55-59.

  • Deposit

    WORLD MINING. ERTSBERG COPPER ORE HIGHER GRADE; MUST

  • Deposit

    BUILD THIRD MINE TO MILL AERIAL TRAM. JULY, 1973.

  • Deposit

    WORLD MINING. FREEPORT SHIPS FIRST COPPER CONCENTRATE

  • Deposit

    FROM ERTSBERG. FEBRUARY 2, 1973.

  • Deposit

    CANADIAN MINING JOURNAL. "MIGHT MIRACLE PERFORMED IN THE

  • Deposit

    COPPER WILDS OF INDONESIA." MAY 1976. PP.75-77.

  • Deposit

    FLINT, D.E. GEOLOGY OF THE ERTSBERG COPPER DEPOSIT, IRIAN

  • Deposit

    BARAT, INDONESIA. FREEPORT INDONESIA, INC.

  • Deposit

    GOLDER ASSOCIATES. 1975. "REPORT TO BECHTEL CORPORATION,

  • Deposit

    ERTSBERG MINE FREEPORT INDONESIA, INC., PRELIMINARY

  • Deposit

    CONCEPT OF MINING SYSTEM AND METHODS." UNPUBLISHED.

  • Deposit

    OCT. 1975.

  • Deposit

    LAURICH KENNEDY ASSOCIATES. "REPORT TO FREEPORT INDONESIA

  • Deposit

    ON GEOTECHNICAL REVIEW AT ERTSBERG, IRIAN JAYA." MAY

  • Deposit

    1974. UNPUBLISHED.

  • Deposit

    WESTERN MINER. "A 69-MILE PIPELINE CARRIES COPPER

  • Deposit

    CONCENTRATES FROM INDONESIAN MILL." OCT. 1975. PP.94-95.

  • Deposit

    WORLD MINING. "INDONESIA" MARCH 1980. P.80.

  • Deposit

    THE MINING RECORD, V99, #17, APRIL 27, 1998, P9, "FREEPORT-

  • Deposit

    MCMORAN ANNOUNCES COPPER AND GOLD DISCOVERY".

  • Deposit

    MINING RECORD, P. 5 (OCT. 5, 1988).

  • Deposit

    MINING JOURNAL, P. 279 (APRIL 7, 1989).

  • Deposit

    MIN. ENG. P. 217 (APRIL 1989).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 21 (FEB. 3, 1990).

  • Deposit

    MINING RECORD, P. 27 (FEB. 27, 1990).

  • Deposit

    DEPARTMENT OF STATE TELEGRAM (JAN. 25, 1990).

  • Deposit

    SOCIETY OF MINING ENGINEERS, PP. 1-8 (FEB. 27-MAR. 2,

  • Deposit

    1989).

  • Deposit

    MINING MAGAZINE, P. 129 (AUG. 1989).

  • Deposit

    THE MINERALS REPORT-INDONESIA EMBASSY OF THE UNITED

  • Deposit

    STATES, JAKARTA, P. 10 (MAR. 1989).

  • Deposit

    DEPARTMENT OF STATE TELEGRAM (JAN. 29, 1990).

  • Deposit

    DEPARTMENT OF STATE TELEGRAM (APRIL 19, 1990).

  • Deposit

    MINING ACTIVITY DIGEST, P. 2 (AUG. 31, 1990).

  • Deposit

    ENGINEERING & MINING JOURNAL, P. 11 (AUG. 1990).

  • Deposit

    MINING ENGINEERING, P. 1139 (OCT. 1990).

  • Deposit

    PAY DIRT, P.3A (AUG. 1990).

  • Deposit

    MINING RECORD, P. 3 (JAN. 16, 1991).

  • Deposit

    SOCIETY FOR MINING, METALLURGY, AND EXPLORATION, INC.,

  • Deposit

    PP. 1-16 (FEB. 25-28, 1991).

  • Deposit

    PP. 1-9 (FEB. 25-28, 1991).

  • Deposit

    MINING RECORD, P. 9 (MAR. 6, 1991).

  • Deposit

    MINING ENGINEERING, P. 300 (MAR. 1991).

  • Deposit

    DEPARTMENT OF STATE TELEGRAM, (MAR. 1991).

  • Deposit

    MINING ENGINEERING, P. 385 (APRIL 1991).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 3 (JUNE 15, 1991).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 5 (JUNE 29, 1991).

  • Deposit

    ENGINEERING & MINING JOURNAL, P. 15 (JUNE 1991).

  • Deposit

    ENGINEERING & MINING JOURNAL, P. 18 (JUNE 1991).

  • Deposit

    MINING ENGINEERING, P. 709 (JUNLY 1991).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 3 (SEPT. 28, 1991).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 8 (SEPT. 28, 1991).

  • Deposit

    SOUTHWESTERN PAY DIRT, P. 24A (FEB. 1991).

  • Deposit

    MINING ENGINEERING, P. 1206 (OCT. 1991).

  • Deposit

    SOUTHWESTERN PAY DIRT, P. 14A (OCT. 1991).

  • Deposit

    MINING RECORD, PP. 6, 7 (NOV. 6, 1991).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 8 (JAN. 11, 1992).

  • Deposit

    THE MINING RECORD, P. 19 (FEB. 5, 1992).

  • Deposit

    MINING MAGAZINE, P. 126 (MAR. 1992).

  • Deposit

    MINING RECORD, (MAR. 4, 1992).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 17 (MAR. 7, 1992).

  • Deposit

    MINING ENGINEERING, P. 295 (APRIL 1992).

  • Deposit

    MINING RECORD, P. 3 (AUG. 12, 1992).

  • Deposit

    MINING ENGINEERING, P. 1213 (OCT. 1992).

  • Deposit

    MINING RECORD, P. 12 (SEPT, 9 1992).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 25 (SEPT. 12, 1992).

  • Deposit

    MINING RECORD, P. 6 (SEPT. 16, 1992).

  • Deposit

    MINING RECORD, P. 2 (JAN. 27, 1993).

  • Deposit

    THE MINING RECORD, P. 3 (MAR. 10, 1993).

  • Deposit

    AUSTRALIAN MINING, P. 20 (APRIL 1993).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 8 (APRIL 17, 1993).

  • Deposit

    AUSTRALIA'S MINING MONTHLY, P. 83 (JUNE 1993).

  • Deposit

    METAL BULLETIN, P. 5 (JUNE 17, 1993).

  • Deposit

    THE MINING RECORD, (JUNE 17, 1992).

  • Deposit

    THE MINING RECORD, P. 12 (AUG. 25, 1993).

  • Deposit

    THE MINING RECORD, P. 6 (OCT. 20, 1993).

  • Deposit

    AMERICAN METAL MARKET, P. 5 (JAN. 14, 1994).

  • Deposit

    PLATT'S METALS WEEK, P. 8 (JAN. 24, 1994).

  • Deposit

    SKILLINGS' MINING REVIEW, P. 17 (JAN. 22, 1994).

  • Deposit

    THE MINING RECORD, P. 13 (FEB. 9, 1994).

  • Deposit

    THE NORTHERN MINER, PP. 1, 10 (JUNE 6, 1994).

  • Deposit

    FREEPORT MCMORAN COPPER & GOLD INC., 1993 10K, P. 2, 3.

  • Deposit

    SOUTHWESTERN PAY DIRT, 8/94, P.24A.

  • Deposit

    AMERICAN METAL MARKET, 8/2/94, P.5.

  • Deposit

    MINING RECORD, 8/17/94, P.17.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, 8/26/94, P.4.

  • Deposit

    RUSSEL, ROBERT L., AND KIEFFER, LOUIS D., MILL EXPANSIONS

  • Deposit

    AT PT FREEPORT INDONESIA, MINING ENGINEERING, 9/94,

  • Deposit

    P.1051-1056.

  • Deposit

    MINING RECORD, 10/5/94, P.8.

  • Deposit

    SKILLINGS', 10/8/94, P.11.

  • Deposit

    LATIN AMERICAN MINING LETTER, 10/14/94, P.2.

  • Deposit

    J. B. WERE & SON, FREEPORT MCMORAN COPPER AND GOLD INC.,

  • Deposit

    OCTOBER 1994, 4PP.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, 12/16/94, P.8.

  • Deposit

    METALS WEEK, 12/26/94, P.1.

  • Deposit

    MINING RECORD, 1/11/95, P.5.

  • Deposit

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

  • Deposit

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

  • Deposit

    SKILLINGS', V 83/N 51, 12/17/94, P.8.

  • Deposit

    MINING RECORD, V 106/N 10, 3/8/95, P.1,5.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, V 7/N 5, 3/17/95, P.1,2.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, V 7/N 7, 4/13/95, P.6.

  • Deposit

    MINING RECORD, V 106/N 23, 6/7/95, P.50,52.

  • Deposit

    SOUTHWESTERN PAY DIRT, #673, 7/95, P.14A-16A.

  • Deposit

    MINING RECORD, V 106/N 28, 7/12/95, P.9.

Comments on the references

  • BROOK HUNT & ASSOCIATES LIMITED, AUSTRALIAN AND ASIAN. COPPER MINES COST STUDY (1988-1995), VOL. 2, P. 98 (1992).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-NOV-1997 Porter, Kenneth E. U.S. Bureau of Mines

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