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  3. Mineral Resource Data System (MRDS)

Bob Silva Excavation

Producer in Siskiyou county in California, United States with commodity Sand and Gravel, Construction
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mineral rights holdings
  10. Land status
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10189710
MAS/MILS ID 0060930272
Record type Site
Current site name Bob Silva Excavation

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -122.60612, 41.76924 (WGS84)
Elevation 756
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Siskiyou(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hawkinsville(quadrangle 1:24,000 scale)

Yreka(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Shasta(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 045 N 007 W 12 NENW California

Comments on the location information

  • 3 MILES NORTH OF YREKA ON YREKA CREEK.

Commodities

Commodity Importance
Sand and Gravel, Construction Primary

Nearby scientific data

Ore Body (1) -122.60612, 41.76924
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Non-metallic
Significant No

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Unknown

Ownership information

  • Type Operator
    Owner Bob Silva
    ID 404408
    Home office California
    Year 1980

Reference information

Bibliographic references

  • Deposit

    MSHA RPT DATED JUNE 1980.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-NOV-1983 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 08/09/1982
MSHA mine ID0404408
Mine name (MSHA)Bob Silva Excavation
Current operatorBob Silva
Current controller (parent)Silva Bob
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.