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Kaiser-Santa Margarita Pit

Producer in San Luis Obispo county in California, United States with commodity Stone, Crushed/Broken
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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 10237637
MAS/MILS ID 0060790244
Record type Site
Current site name Kaiser-Santa Margarita Pit
Alternate or previous names Southern Pacific Quarry, Quarry, Walter B. Roselip Quarry

Geographic coordinates

Point of reference Pit
Geographic coordinates: -120.57287, 35.41997 (WGS84)
Elevation 302
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

San Luis Obispo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Santa Margarita(quadrangle 1:24,000 scale)

San Luis Obispo(quadrangle 1:100,000 scale)

San Luis Obispo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Salinas(hydrologic unit)

Central California Coastal(hydrologic accounting unit)

Central California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California San Luis Obispo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 029 S 013 E 10 SWNW California

Commodities

Commodity Importance
Stone, Crushed/Broken Primary

Nearby scientific data

Pit (1) -120.57287, 35.41997
ListMap

Economic information

Economic information about the deposit and operations

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

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Kaiser Sand And Gravel Co.
    ID 0401616
    Home office California
    Year 1990

Reference information

Bibliographic references

  • Deposit

    CALIF. STATE MINING BUR. REPORT 21, 1925, P. 536-537.

  • Deposit

    CALIF. DIV. MINES AND GEOL. BULLETIN 199, 1976, TABLE 8,

  • Deposit

    NO. 16, P. 40.

  • Deposit

    CALIF. DIV. MINES AND GEOL. SPECIAL PUBLICATION 103, 1990.

Reporter information

Type Date Name Affiliation Comment
Reporter 24-AUG-1992 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)

StatusActive since 04/23/1974
MSHA mine ID0401616
Mine name (MSHA)Santa Margarita Aggregates
Current operatorMartin Marietta Northern California Aggregates,LLC
Current controller (parent)Martin Marietta Materials Inc
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.

External references

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.