East Rand Proprietary Mines Erpm

Producer in South Africa with commodities Gold, Silver
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. Ownership information
  13. Production statistics
  14. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10159257
MRDS ID M046266
MAS/MILS ID 7910200078
Record type Site
Current site name East Rand Proprietary Mines Erpm
Alternate or previous names East Rand Proprietary Mine
Related records 10038815

Geographic coordinates

Geographic coordinates: 28.25145, -26.2466 (WGS84)

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Unknown
Mica Unknown
Pyrite Unknown
Quartz Unknown
Silver Unknown

Nearby scientific data

(1) 28.25145, -26.2466

Economic information

Ore body information

  • Thickness 1.3M
    Depth to top 2500M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 PLACER
    Shape of Orebody #1 TABULAR
    Primary mode of Origin OTHER
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 2000
    Date of Last Modification 850930
  • Area 7800HA
    Field Value
    Total Surface Area (HA) 7800
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Year of first production 1982
Milling method Hydrometallurgy Unspecified

Mining district

District name East Central

Mineral rights holdings

Type of mineral rights Private Lease

Ownership information

  • Type Owner-Operator
    Owner East Rand Proprietary Mine (Barlow Rand Mining Group)
    Interest 100
    Home office South Africa
    Year 1982

Production statistics

  • Year 1982
    Description Production The Same Until 2046 2700000 Metric Tons Ore/Year

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Demonstrated 8390000mt ore
    Total resources 8390000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.9 g/mt Gold Major 1993

Comments on the reserve resource information

  • WAS UPDATED FOR THE 1992 AU AVAILABILITY STUDY. 1989 AU PROD. = 250,454 OZ AU FROM MILLING OF 3,021,217 MT ORE. 1991 PROD. = 220,120 OZ. AU FROM TREATING 2,446,000 TNS ORE.
  • C5 = C1 + C2 + C3 + C4; SOURCE OF INFORMATION IS MINE MANAGEMENT. COLUMN 1 = THE COMPOSITE REEF, COLUMN 2 = THE MAIN REEF, COLUMN 3 = THE SOUTH REEF, COLUMN 4 = THE MAIN REEF LEADER.

Workings at the site

  • Type of workings Underground
    Length 51500M
    Overall depth 2500M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BREAST STOPING 10-30
    Percent Waste Rock 0
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. TIMBER
    Number of Shafts 46
    1st Condition of Workings UNKNOWN
    Capacity 7700
    Capacity Units MT ORE/DAY
    Unit Production Cost 48.71
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 2
    Year of Information 1982

Comments on other economic factors

  • THE BULLION IS SHIPPED IN RAND REFINERY ARMORED CARS, THE COST OF WHICH IS INCLUDED IN THE REFINING COSTS.

Reference information

Bibliographic references

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUN 93,P. 32.

  • Deposit

    CHAMBER OF MINES OF SOUTH AFRICA, 1981, RAND REFINERY, P.R.

  • Deposit

    D. SERIES #255, 20 PP.

  • Deposit

    CHAMBER OF MINES OF S.A., 1980, GOLD IN SOUTH AFRICA, P.R.D.

  • Deposit

    SERIES #241, 28 PP.

  • Deposit

    CHAMBER OF MINES, 1980, OVERVIEW OF SOUTH AFRICAN MINING

  • Deposit

    INDUSTRY.

  • Deposit

    ELEVATORSKI, E.A., 1981, GOLD MINES OF THE WORLD, MINOBRAS,

  • Deposit

    PP. 78-86.

  • Deposit

    POTTS, D., 1981, THE SOUTH AFRICAN GOLD MINING INDUSTRY IN

  • Deposit

    GOLD, 1981, CONSOLIDATED GOLD FIELDS LTD., PP. 71-85.

  • Deposit

    ANHAEUSSER, C.R., 1976, THE NATURE AND DISTRIBUTION OF

  • Deposit

    ARCHEAN GOLD MINERALIZATION IN SOUTHERN AFRICA, MINS.

  • Deposit

    SCI. ENG., V. 8, # 1, PP. 46-84.

  • Deposit

    BOYLE, R.W., 1979, THE GEOCHEMISTRY OF GOLD AND ITS DEPOSITS

  • Deposit

    GEOLOGICAL SURVEY OF CANADA, BULLETIN 280, 584 PP.

  • Deposit

    HAUGHTON, S.H., 1964A, THE GEOLOGY OF SOME ORE DEPOSITS IN

  • Deposit

    SOUTHERN AFRICA, V. I, GOLD DEPOSITS OF THE WITWATERS-

  • Deposit

    RAND BASIN, GEOL. SOC. S. AFR., JOHANNESBURG, 625 PP.

  • Deposit

    LIEBENBERG, W.R., 1972, MINERALOGICAL FEATURES OF GOLD ORES

  • Deposit

    IN SOUTH AFRICA, GOLD METALLURGY IN SOUTH AFRICA,

  • Deposit

    CHAMBER OF MINES OF S. AFRICA.

  • Deposit

    MINTER, W.E.L., 1976, DETRITAL GOLD, URANIUM, AND PYRITE

  • Deposit

    CONCENTRATIONS PILATED TO SEDIMENTOLOGY IN THE PRE-

  • Deposit

    CAMBRIAN VAAL REEF PLACER, WITWATERSRAND, S. AFRICA,

  • Deposit

    ECONOMIC GEOLOGY, V. 71, PP. 157-176.

  • Deposit

    PRETORIUS, D.A., 1981, GOLD AND URANIUM IN QUARTZ-PEBBLE

  • Deposit

    CONGLOMERATES, ECONOMIC GEOLOGY 75TH ANNIVERSARY VOLUME

  • Deposit

    PP. 117-138.

  • Deposit

    PRETORIUS, D.A., 1975, THE DEPOSITIONAL ENVIRONMENT OF THE

  • Deposit

    WITWATERSRAND GOLDFIELDS: A CHRONOLOGICAL REVIEW OF

  • Deposit

    SPECULATIONS AND OBSERVATIONS, MIN. SCI. ENG., V. 7, #

  • Deposit

    1, PP. 18-47.

  • Deposit

    SMITH, N.D., AND MINTER, W.E.L., 1980, SEDIMENTOLOGICAL

  • Deposit

    CONTROLS OF GOLD AND URANIUM IN TWO WITWATERSRAND

  • Deposit

    PALEOPLACERS, ECONOMIC GEOLOGY, V. 75, PP. 1-14.

  • Deposit

    ADAMSON, R.J., 1972, GOLD METALLURGY IN SOUTH AFRICA,

  • Deposit

    CHAMBER OF MINES OF S.A., 452 PP.

  • Deposit

    FINANCIAL TIMES, 1981, MINING INTERNATIONAL YEARBOOK.

  • Deposit

    KING, A., 1949, GOLD METALLURGY ON THE WITWATERSRAND,

  • Deposit

    TRANSVAAL CHAMBER OF MINES, 458 PP.

  • Deposit

    MCQUISTON, F.W., AND SHOEMAKER, R.S., 1975, GOLD AND SILVER

  • Deposit

    CYANIDATION PLANT PRACTICE, SOCIETY OF MINING ENGINEERS

  • Deposit

    GOLD INSTITUTE, 1981, GOLD REGULATIONS AND TAXES FOR MINING,

  • Deposit

    REFINING, MANUFACTURING, AND TRADE IN THIRTEEN COUN-

  • Deposit

    TRIES, PP. 74-79.

  • Deposit

    CHAMBER OF MINES OF S. AFRICA, 1982, ANALYSIS OF WORKING

  • Deposit

    RESULTS, OCT.-DEC., 1981, 8 PP.

  • Deposit

    CHAMBER OF MINES OF S. AFRICA, 1981, 91ST ANNUAL REPORT AND

  • Deposit

    STATISTICAL TABLES, 116 PP.

  • Deposit

    MINING JOURNAL RESEARCH SERVICES, 1982, PRODUCTION AND

  • Deposit

    CAPITAL EXPENDITURE FOR THE SOUTH AFRICAN GOLD MINES,

  • Deposit

    1966-1981.

  • Deposit

    MINING JOURNAL RESEARCH SERVICES, 1982, SUMMARY REPORT ON

  • Deposit

    PRODUCTION AND RECOVERY FOR THE SOUTH AFRICAN GOLD

  • Deposit

    MINES, 1966-1981.

  • Deposit

    MOHIDE, T.P., 1981, GOLD, MINERAL POLICY BACKGROUND PAPER #

  • Deposit

    12, ONTARIO MINISTRY OF NATURAL RESOURCES, PP. 84-112.

  • Deposit

    STORRAR, C.D., 1981, SOUTH AFRICAN MINE VALUATION, CHAMBER

  • Deposit

    OF MINES OF S. AFRICA, 470 PP.

  • Deposit

    ANNUAL REPORTS - EAST RAND PROPRIETARY MINE LTD., 1980-1981.

  • Deposit

    MINING JOURNAL, 1980-1982, QUARTERLY REVIEWS OF SOUTH AFRICA

  • Deposit

    SHARES - ERPM.

  • Deposit

    CAPITAL EXPENDITURE ANALYSES - ERPM.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1994 Boyle, Ed U.S. Bureau of Mines

Beyond USGS

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