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  3. Mineral Resource Data System (MRDS)

El Rio Pit

Past Producer in Ventura 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. Land status
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10214548
MAS/MILS ID 0061110002
Record type Site
Current site name El Rio Pit

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -119.16672, 34.25001 (WGS84)
Elevation 34
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Ventura(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Saticoy(quadrangle 1:24,000 scale)

Santa Barbara(quadrangle 1:100,000 scale)

Los Angeles(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Santa Clara(hydrologic unit)

Ventura-San Gabriel Coastal(hydrologic accounting unit)

Southern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Ventura

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 002 N 022 W 13 California

Commodities

Commodity Importance
Sand and Gravel, Construction Primary

Nearby scientific data

Ore Body (1) Quaternary alluvium and marine deposits
ListMap

Economic information

Economic information about the deposit and operations

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

Land status

Ownership category Unknown

Ownership information

  • Type Unknown
    Owner Southern Pacific Milling Co.
    ID 401956
    Home office 3555 Vineyard Ave. Oxnard, CA
    Year 1981
  • Type Owner-Operator
    Owner Calmat Co. (Aggregate Div.)
    ID 401956
    Home office California
    Year 1990

Reference information

Bibliographic references

  • Deposit

    CALIF. DIV. MINES AND GEOL. SPECIAL PUBLICATION 58, 1981,

  • Deposit

    P. 58.

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JAN-1991 Ridenour, James 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 07/28/1998
MSHA mine ID0401956
Mine name (MSHA)EL RIO PIT & MILL
Current operatorSouthern Pacific Milling Company
Current controller (parent)Hanson PLC
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.