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El Centenario

Plant in Oruro, Bolivia with commodity Tin
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Warning: This record lacks important information: bibliographic references, which we consider necessary for a comprehensive report.
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Ownership information
  9. Workings at the site
  10. Links to other databases
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10279910
MAS/MILS ID 3350250038
Record type Site
Current site name El Centenario

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -66.58277, -18.31434 (WGS84)

Site location context

Political divisions (FIPS codes)

Oruro(province)

Bolivia(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Bolivia Oruro

Comments on the location information

  • THE MINE IS LOCATED AT AN ALTITUDE OF ABOUT 3,750 METERS ABOVE SEA LEVEL. AREA IS SERVICED BY ROAD AND RAILROAD.

Commodities

Commodity Importance
Tin Critical Primary

Nearby scientific data

Ore Body (1) -66.58277, -18.31434
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Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Dredging
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Ownership information

  • Type Owner-Operator
    Owner Corporacion Minera De Bolivia (Comibol)
    Interest 100
    Year 1982

Comments on the reserve resource information

  • RESERVES NOT SUITABLE TO CONTINUE THE OPERATION.
  • 162,480,0000 MT 1-89 RESOURCE

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method DREDGING
    Primary Material Cover SAND, GRAVEL
    Percentage 50
    Secondary Material Cover SAND, SILT
    Percentage 50
    Capacity 26900
    Capacity Units MT ORE/DAY
    Unit Production Cost .38
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1982
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method DREDGING
    Capacity 26900
    Capacity Units MT ORE/DAY
    Unit Production Cost .18
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • CONCENTRATES WILL BE TRUCKED TO THE ENAF SMELT/REFINERY AT VINTO. THERE WILL BE NO BYPRODUCTS.
  • COMIBOL HAS BEEN INVESTIGATING AND DEVELOPING THIS PROPERTY FOR YEARS. IT IS NOW ANTICIPOATED THAT THE MINE WILL BE IN OPERATION BY 1986. THE MAJOR OBSTACLE IS IN SECURING LOANS FROM NON-CAPIUTALISTIC SOURCES.
  • TAXES ARE 53% OF THE DIFFERENCE BETWEEN THE QUOTED TIN METAL PRICE AND THE BASE PRICE($2.96)(SET BY THE GOVERNMENT) ON EACH POUND OF TIN CONTAINED IN THE CONCENTRATE.
  • MINING WILL BE ACCOMPLISHED WITH TWO 13 3/4 CUBIC FOOT CAPACITY CONVENTIONAL BUCKET-LINE DREDGES. DETAILS FOLLOW; MAX DIFFING DEPTH BELOW WATER= 31.1 METERS, MAX. DIGGING ANGLE=47 DEGREES., NO. OF BUCKETS=115, OVERALL DREDGE LENGTH 54 METERS., TOTAL DREDGE WEIGHT= 2850 MT. MINE RECOVERY CONSIDERED AT 100 PCT AND DILUTION AT 10%.

Reference information

General comments

Subject category Comment text
Deposit SMELTER RECOVERS APPROX. 98% OF CONTAINED TIN IN CONCENTRATE AND PRODUCES A 99.8% TIN PRODUCT. DEPOSIT WAS ORIGINALLY DISCOVERED AROUND 1924 AND WORKED IN A RUDIMENTARY FASHION ON AN OCCASIONAL BASIS.

Reporter information

Type Date Name Affiliation Comment
Reporter 18-NOV-1992 Sager, Ron U.S. Bureau of Mines

Beyond USGS

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

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