1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Los Bronces

Producer in Chile with commodities Copper, Molybdenum, 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 10157934
MRDS ID TC06803
MAS/MILS ID 3370410001
Record type Site
Current site name Los Bronces
Alternate or previous names Los Bronces Disputada, La Disputada, La Disputada De Las Condes
Related records 10060001

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -70.2881, -33.14887 (WGS84)
Elevation 4100
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Commodities

Commodity Importance
Copper Primary
Molybdenum Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcocite Unknown
Chalcopyrite Unknown
Pyrite Unknown
Tourmaline Unknown

Nearby scientific data

Ore Body (1) -70.2881, -33.14887
ListMap

Economic information

Ore body information

  • Strike N00E
    Dip 90W
    Thickness 640M
    Length 2000M
    Width 500M
    Area 150HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 LENTICULAR
    Type of Orebody #3 BRECCIA FILL
    Shape of Orebody #3 PIPELIKE
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin CONT METASOMATIC
    Primary Ore Control FAULTING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 PROPYLITIC
    Strike And Dip N00E:90W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 150
    Date of Last Modification 800806

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1916
Mining method Open Pit
Year of first production 1925
Milling method Flotation

Mining district

District name Los Bronces

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Minerals Only

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Cia Minera Disputada De Las Condes
    Home office Chile
    Year 1990
  • Type Owner
    Owner Exxon Corp.
    Interest 100
    Home office New York
    Year 1990

Production statistics

  • Year 1975
    Description Mill Feed @ 1.19% Cu. 2136000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 2136000mt 1wt-pct
  • Year 1976
    Description Mill Feed @ 1.20% Cu. 2372000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 2372000mt 1wt-pct
  • Year 1977
    Description Mill Feed @ 1.18% Cu. 2311000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 2311000mt 1wt-pct
  • Year 1978
    Description Mill Feed @ 1.29% Cu. 1216000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 1216000mt 1wt-pct
  • Year 1979
    Description Mill Feed @ 1.38% Cu. 598000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 598000mt 1wt-pct
  • Year 1980
    Description Mill Feed @ 1.27% Cu. 1532000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 1532000mt 1wt-pct
  • Year 1981
    Description Mill Feed @ 1.20% Cu. 2364000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 2364000mt 1wt-pct
  • Year 1982
    Description Mill Feed @ 1.39% Cu. 2858000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 2858000mt 1wt-pct
  • Year 1983
    Description Mill Feed @ 1.31% Cu. 3448000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3448000mt 1wt-pct
  • Year 1984
    Description Mill Feed @ 1.16% Cu. 3472000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3472000mt 1wt-pct
  • Year 1985
    Description Cathode Copper 41330 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 41330mt
  • Year 1985
    Description Concentrate 137523 Mt
  • Year 1985
    Description 1.12% Cu. 4126000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 4126000mt 1wt-pct
  • Year 1986
    Description Cathode Copper 41875 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 41875mt
  • Year 1986
    Description Concentrate 134174 Mt
  • Year 1986
    Description 1.13% Cu. 4122000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 4122000mt 1wt-pct
  • Year 1987
    Description Cathode Copper 40242 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 40242mt
  • Year 1987
    Description Concentrate 134426 Mt
  • Year 1987
    Description 1.23% Cu. 3656000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3656000mt 1wt-pct
  • Year 1988
    Description Cathode Copper 48855 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 48855mt
  • Year 1988
    Description Concentrate 166214 Mt
  • Year 1988
    Description 1.44% Cu. 3812000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3812000mt 1wt-pct
  • Year 1989
    Description Cathode Copper 38336 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 38336mt
  • Year 1989
    Description Concentrate 120152 Mt
  • Year 1989
    Description 1.15% Cu 3610000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3610000mt 1wt-pct
  • Year 1990
    Description Cathode Copper 42398 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 42398mt
  • Year 1990
    Description Concentrate 117774 Mt
  • Year 1990
    Description 1.20% Cu. 3932000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3932000mt 1wt-pct
  • Year 1991
    Description Cathode Copper 41217 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 41217mt
  • Year 1991
    Description Concentrate 123294 Mt
  • Year 1991
    Description 1.32% Cu 3704000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 3704000mt 1wt-pct
  • Year 1992
    Description Concentrate 217272 Mt
  • Year 1992
    Description 1.32% Cu 6803000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 6803000mt 1wt-pct
  • Year 1992
    Description Cathode Copper 71327 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 71327mt

Comments on the production information

  • P-INV. FOR P-RCDS A, B & C =0 BECAUSE THESE CAPACITIES ARE JUST INTERIM AMOUNTS TOWARD FINAL CAPACITY WHICH IS PD.

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Indicated 1330000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.81 wt-pct Copper Major 1987
    Molybdenum Mo 0.016 wt-pct Molybdenum Minor 1987
  • Type In-situ
    Estimate year 1990
    Demonstrated 1322000000mt ore
    Total resources 1322000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.81 wt-pct Copper Major 1990
    Molybdenum Mo 0.016 wt-pct Molybdenum Minor 1990
  • Type In-situ
    Estimate year 1991
    Demonstrated 1314000000mt ore
    Total resources 1314000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.81 wt-pct Copper Major 1991
    Molybdenum Mo 0.016 wt-pct Molybdenum Minor 1991
  • Type In-situ
    Estimate year 1986
    Indicated 1330000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.81 wt-pct Copper Major 1986
    Molybdenum Mo 0.016 wt-pct Molybdenum Minor 1986

Comments on the reserve resource information

  • SMALL CURRENT OPERATION BUT WILL BE REPLACED BY LARGE SURFACE OPER. OWNER: EXXON MINERALS CHILE INC. $400 M EXPANSION PROJECT AT LOS BRONCES HAS RAISED PRODUCTION CAPACITY FROM 12,000 MTPD IN 1991 TO 37,000 MTPD ORE IN 1993, AND FROM 40.000 MTPY COPPER TO 12,000 MTPY COPPER. EXPANSION STARTED IN 8/89 AND WAS OFFICIALLY INAUGURATED 10/92. 6/95 NICKEL MONITOR STATES THAT LOS BRONCES MOLY CAPACITY OF 4M LBS/YR IS SEVERLY CURTAILED AS A RESULT OF CODELCO NOT ROASTING OWING TO A CONTRACT DISPUTE. 1995 PRODUCTION WILL BE LIMITED.
  • DISPUTADA, 1986 AR, P12. (12/31/86)
  • MOLY IS PRESENT IN THE ORE BUT OWNERS HAVE NO PRESENT PLANS TO RECOVER MOLY. POSSIBLE RECOVERY IN FUTURE. THIS MAS STUDY DOES NOT ADDRESS MO BY-PRODUCT RECOVERY.

Workings at the site

  • Type of workings Surface
    Area 34HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BENCH (BERM)
    Percent Waste Rock 28
    Primary Material Cover SAND, GRAVEL
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 45
    Capacity 12570
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1986
  • Type of workings Surface
    Area 58HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 45
    Capacity 31290
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1986
  • Type of workings Surface
    Area 82HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 3
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 45
    Capacity 57357
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1986

Reference information

Bibliographic references

  • Reserve-Resource

    CIA MINERA DISPUTADA DE LAS CONDES S.A., 1990 ANNUAL REPORT,

  • Reserve-Resource

    P.6.

  • Reserve-Resource

    MINING MAGAZINE, 9/90, P.157.

  • Reserve-Resource

    CIA MINERA DISPUTADA DE LAS CONDES S.A., 1986 ANN. RPT., P12

  • Deposit

    SUTULOV, A., 1975, EL COBRE CHILENO: CODELCO PUBS., SANTIAGO

  • Deposit

    520 PGS.

  • Deposit

    NIGHINGALE, W., 1975, MINING INTERNATIONAL YEAR BOOK: FINANC

  • Deposit

    TIMES LTD., LONDON, ENGLAND, P. 217.

  • Deposit

    SUTULOV, A., 1966, CHILEAN COPPER: E-MJ, JULY, VOL. 167, NO.

  • Deposit

    71-77.

  • Deposit

    ENG AND MIN J VOL 167 NO 7 P 77

  • Deposit

    MINING MAGAZINE, FEBRUARY 1978, P. 143.

  • Deposit

    WORLD MINING, APRIL 1978, P. 108.

  • Deposit

    ENGINEERING AND MINING JOURNAL, MARCH 1978, P. 35, 39.

  • Deposit

    SUTULOV, A., COPPER PORPHYRIES: SAN FRANCISCO, MILLER-

  • Deposit

    FREEMAN PUBLICATIONS, INC., 1975, P. 29-32, 159.

  • Deposit

    HOLLISTER, V. F., GEOLOGY OF THE PORPHYRY COPPER DEPOSITS OF

  • Deposit

    THE WESTERN HEMISPHERE: NEW YORK, THE AMERICAN INSTITUTE

  • Deposit

    OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC.,

  • Deposit

    1978, P. 6, 10, 26.

  • Deposit

    MINING INTERNATIONAL YEARBOOK: LONDON, THE FINANCIAL TIMES

  • Deposit

    LIMITED, 1978, P. 183.

  • Deposit

    MINING MAGAZINE, LATIN AMERICA: SNOW DISRUPTS LA DIPUTADA:

  • Deposit

    V. 139, NO. 3, 1978, P. 303.

  • Deposit

    WORLD MINING, CHILE: V. 31, NO. 10, 1978, P. 179.

  • Deposit

    WORLD MINING, CHILE: V. 31, NO. 4, 1978, P. 108.

  • Deposit

    MINING JOURNAL, EXXON REBUILDS AT DISPUTADA: V. 291, NO.

  • Deposit

    7477, 1978, P. 455.

  • Deposit

    MINING MAGAZINE, CHILE: V. 127, NO. 3, 1972, P. 295.

  • Deposit

    MINING JOURNAL, PRODUCTION: CHILEAN COPPER MINES DAMAGE:

  • Deposit

    V. 291, NO. 7457, 1978, P. 64.

  • Deposit

    WORLD MINING, CHILE: EXXON BUYS DISPUTADA; CHUGUICAMATA EX-

  • Deposit

    PANDS MILL: V. 138, NO. 2, 1978, P. 41.

  • Deposit

    MINING MAGAZINE, CHILE: V. 140, NO. 1, 1979, P. 55, 66.

  • Deposit

    ENGINEERING AND MINING JOURNAL, THIS MONTH IN MINING: NEW

  • Deposit

    AND EXPANDING MINES AND PLANTS: V. 179, NO. 3, 1978,

  • Deposit

    P. 39.

  • Deposit

    MINING MAGAZINE, NEW DISPUTADA PLANT?: V. 139, NO. 4, 1978,

  • Deposit

    P. 428.

  • Deposit

    MINING JOURNAL, EXXON MINERALS PLANS RECONSTRUCTION AT LA

  • Deposit

    DISPUTADA: V. 291, NO. 7466, 1978.

  • Deposit

    MINING JOURNAL, DEVELOPMENT: FINANCE FOR DISPUTADA?: V.

  • Deposit

    290, NO. 7430, 1978, P. 26.

  • Deposit

    MINING MAGAZINE, LATIN AMERICA: LA DISPUTADA TERMS: V.

  • Deposit

    ..., NO. ...., 1978.

  • Deposit

    ENGINEERING AND MINING JOURNAL, CHILE: V. 179, NO. 7, 1978,

  • Deposit

    P. 134.

  • Deposit

    SUTULOV, A., NORMALIZATION OF COPPER PRODUCTION IS KEY TO

  • Deposit

    CHILE'S DRIVE FOR ECONOMIC RECOVERY: ENGINEERING AND

  • Deposit

    MINING JOURNAL, V. 175, NO. 2, 1974, P. 72-75.

  • Deposit

    WORLD MINING, WHAT'S GOING ON IN WORLD MINING: PRIVATE OWN-

  • Deposit

    NERSHIP OF MINES ENCOURAGED: V. 140, NO. 2, 1979, P. 93.

  • Deposit

    ENGINEERING AND MINING JOURNAL, HUGE COPPER RESERVES ASSURE

  • Deposit

    CHILE'S POSITION AS WORLD PRODUCER: V. 178, NO. 9, 1977,

  • Deposit

    P. 36, 41.

  • Deposit

    WORLD MINING, WHAT'S GOING ON IN WORLD MINING: CHILE: NEW

  • Deposit

    STUDY INDICATES VAST SIZE OF CHILEAN COPPER RESERVES CON-

  • Deposit

    CENTRATED IN 11 PORPHYRY DEPOSITS: V. 30, NO. 10, 1977,

  • Deposit

    P. 146-147.

  • Deposit

    MINING JOURNAL, CHILE'S COPPER RESOURCES: V. 289, NO. 7407,

  • Deposit

    1977, P. 101.

  • Deposit

    MINING MAGAZINE, 1029 MINES ACCOUNTING FOR 90 PER CENT OF

  • Deposit

    ALL OUTPUT OTHER THAN COAL: SOUTH AMERICA: CHILE: V.

  • Deposit

    125, NO. 3, 1971, P. 253, 257.

  • Deposit

    MINING JOURNAL, PENNAROYA ASKS CHILE FOR MORE: V. 290, NO.

  • Deposit

    7453, 1978.

  • Deposit

    MINING MAGAZINE, CENTRAL AND SOUTH AMERICA: CHILE: V. 136,

  • Deposit

    NO. 6, 1977, P. 474.

  • Deposit

    MINING MAGAZINE, 1036 MINES ACCOUNTING FOR 90 PER CENT OF

  • Deposit

    121, NO. 3, 1969, P. 241, 257.

  • Deposit

    ARMBRUST, G. H., OYARZUN, J., AND ARIAS, J., RUBIDIUM AS A

  • Deposit

    GUIDE TO ORE IN CHILEAN PORPHYRY COPPER DEPOSITS: ECO-

  • Deposit

    NOMIC GEOLOGY, V. 72, P. 1086-1100.

  • Deposit

    ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY OF

  • Deposit

    MINING AND MINERAL PROCESSING OPERATIONS: NEW YORK,

  • Deposit

    MCGRAW-HILL, INC., 1978, P. 278.

  • Deposit

    RIO TINTO ZINC MINING COST ANALYSIS SYSTEM, PERFORMANCE

  • Deposit

    ANALYSIS: MAY 27, 1975, P. 353.

  • Deposit

    HOLLISTER, V. F., REGIONAL CHARACTERISTICS OF PORPHYRY

  • Deposit

    COPPER DEPOSITS OF SOUTH AMERICA: MINING ENGINEERING,

  • Deposit

    V. 25, NO. 8, 1973, P. 51-54.

  • Deposit

    ENG. AND MINING JOURNAL, EXXON WILL STUDY FEASIBILITY OF

  • Deposit

    EXPANDING LOS BRONCES TO 80,000 MTPD, JUNE 1980, P.39.

  • Deposit

    ENG. AND MINING JOURNAL, DISPUTADA: SMALL MINES AND BIG

  • Deposit

    IDEAS, NOV. 1979, PP. 102-104.

  • Deposit

    ENG. AND MINING JOURNAL, CHILE'S DISPUTADA CONTEMPLTES

  • Deposit

    MAJOR EXPANSION, MAY 1979, P.11.

  • Deposit

    MAGLIOLA-MUNDET, H., LE GISEMENT DE CUIVRE DE LOS BRONCES

  • Deposit

    DE DISPUTADA, CHILI; LA CHRONIQUE DES MINES, ETUDE, 1964,

  • Deposit

    (IN FRENCH). -EXCELLENT MAPS OF MINE/DEPOSIT.

  • Deposit

    E&MJ, "EXXON REOPENS DISPUTADA COPPER UNIT". AUGUST 1979,

  • Deposit

    PG. 55

  • Deposit

    PAZOUR, DONALD A.; LOS BRONCES PORPHYRY COPPER PROJECT

  • Deposit

    LIKELY TO GO AHEAD, WORLD MINING, 7/81, P. 34-38.

  • Deposit

    BURGER, JOHN R.; EXXON TRIMS CHILE COPPER PLAN TO FIT COST

  • Deposit

    ESCALATION, E&MJ, FEB. 1985, P. 26-32.

  • Deposit

    VESELY, M. & O. FERNANDEZ; CRUSHER FOR CRITICAL SIZE

  • Deposit

    MATERIAL AT LOS BRONCES SEMIAUTOGENOUS GRINDING PLANT,

  • Deposit

    CHILE, MINERALS AND METALLURGICAL PROCESSES, MAY 1986.

  • Deposit

    STOISER, R.L; EXPLORATION AND GEOLOGIC EVALUATION OF THE LOS

  • Deposit

    BRONCES COPPER-MOLYBDENUM DEPOSIT, MINING ENGINEERING,

  • Deposit

    MARCH 1986, PG. 187-194.

  • Deposit

    E&MJ; DISPUTADA CONTINUES RATIONAL COPPER GROWTH, JANUARY

  • Deposit

    1987, PG. 15.

  • Deposit

    SUTTILL, K.R., LOS BRONCES PLANS MAJOR EXPANSION TO 30,000

  • Deposit

    MT/D CAPACITY, E&MJ, MAY 1988, P. 36-40.

  • Deposit

    SKILLINGS, DAVID N.; CIA. MINERA DISPUTADA DE LAS CONDES S/A

  • Deposit

    EXPANDING COPPER PRODUCTION FURTHER AT ITS LOS BRONCES AND

  • Deposit

    AND EL SOLDADO MINES, SKILLINGS' MINING REVIEW, 7/23/88,

  • Deposit

    P. 4-7.

  • Deposit

    DEPARTMENT OF STATE TELEGRAM #180051Z, AUG. 1989.

  • Deposit

    BREWIS, TONY; DISPUTADA EXPANDING LOS BRONCES, MINING

  • Deposit

    MAGAZINE, 7/90, P. 195-199.

  • Deposit

    LAML; LOS BRONCES OUTPUT INCREASED, 4/15/92, P. 6, 7.

  • Deposit

    MINERIA Y DESARROLLO, JUNE-AUGUST, 1989, VOL.V, NO.2.

  • Deposit

    CIA MINERA DISPUTADA DE LAS CONDES S.A., 1992 ANNUAL REPORT,

  • Deposit

    P.16.

  • Deposit

    MINERIA CHILENA, 7/92, P.1,2.

  • Deposit

    MINING JOURNAL, 4/24/92, P.299.

  • Deposit

    MINING JOURNAL, 11/6/92, P.330.

  • Deposit

    LATIN AMERICAN MINING LETTER, 11/14/92, P.2.

  • Deposit

    METAL BULLETIN, 3/4/93, P.7.

  • Deposit

    LATIN AMERICAN MINING LETTER, 2/26/93, P.6.

  • Deposit

    METAL BULLETIN MONTHLY, COPPER SUPPLEMENT, 6/93, P.13,15.

  • Deposit

    AMERICAN METAL MARKET, 9/6/93, P.3.

  • Deposit

    LATIN AMERICAN MINING LETTER, 9/10/93, P.3.

  • Deposit

    MINING MAGAZINE, 11/94, P.246-255.

Comments on the references

  • BROOK HUNT & ASSOCIATES, COPPER MINES COST STUDY (1988-1995), VOL.6, LATIN AMERICA, 1991 ED., P.259-266.

Reporter information

Type Date Name Affiliation Comment
Reporter 11-MAR-97 Porter, Kenneth E. U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site