| Deposit ID | 10138212 |
|---|---|
| MAS/MILS ID | 0060130076 |
| Record type | Site |
| Current site name | Clayton Quarry |
| Alternate or previous names | Clayton Quarry and Mill, Kaiser Sand and Gravel Co. |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -121.95884, 37.9227 (WGS84) |
| Elevation | 415 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Contra Costa(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Clayton(quadrangle 1:24,000 scale)
Stockton(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Suisun Bay(hydrologic unit)
San Francisco Bay(hydrologic accounting unit)
San Francisco Bay(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Contra Costa |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 001 N | 001 W | 22 | SWNE | California |
| Commodity | Importance |
|---|---|
| Stone, Crushed/Broken | Primary |
| Ore Body (1) | -121.95884, 37.9227 |
|---|
| Operation type | Surface |
|---|---|
| Development status | Producer |
| Commodity type | Non-metallic |
| Significant | No |
| Ownership category | Unknown |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Kaiser Sand And Gravel Co. |
| ID | 400173 |
| Home office | California |
| Year | 1990 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060130076 | |
| Mine Safety and Health Administration | MSHA | MSHA | 0400173 |
CALIF. JOUR. MINES & GEO. V.54, NO4, OCT. 1958, PP.550-1,577
CALIF. DIV. MINES AND GEOL. SPECIAL PUBLICATION 103, 1990.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 11-FEB-1991 | Lowe, Nathan T. | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Active since 04/26/1973 |
|---|---|
| MSHA mine ID | 0400173 |
| Mine name (MSHA) | Clayton Plant |
| Current operator | CEMEX Construction Materials Pacific, LLC |
| Current controller (parent) | Cemex S A |
| Mine type | Surface (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.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.