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  3. Mineral Resource Data System (MRDS)

Polak Pit

Past Producer in Santa Clara 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 10117016
MAS/MILS ID 0060850051
Record type Site
Current site name Polak Pit

Geographic coordinates

Point of reference Trench
Geographic coordinates: -121.66792, 37.16682 (WGS84)
Elevation 91
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Santa Clara(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Morgan Hill(quadrangle 1:24,000 scale)

San Jose(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Coyote(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Santa Clara

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009 S 003 E 06 C W2W2 California

Comments on the location information

  • ON EAST SIDE OF HIGHWAY 101, 4 MILES SOUTHEAST OF COYOTE

Commodities

Commodity Importance
Sand and Gravel, Construction Primary

Nearby scientific data

Trench (1) -121.66792, 37.16682
ListMap

Economic information

Economic information about the deposit and operations

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

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Unknown

Ownership information

  • Type Owner-Operator
    Owner Granite Rock Co.
    ID 402280

Reference information

Bibliographic references

  • Deposit

    MSHA RPT DATED NOVEMBER 1979

  • Deposit

    CALIF. DIV. MINES AND GEOLOGY SPECIAL PUBL. 103, 1990.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1991 Lowe, Nathan T. 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 11/18/1992
MSHA mine ID0402280
Mine name (MSHA)Calaveras Rock Incorporated
Current operatorCalaveras Rock Inc
Current controller (parent)Gretsinger Warren
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.