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MSHA mine register by county

Mines in Stanislaus County, California

Stanislaus County, California has 19 mines on MSHA's register: 4 active, 2 intermittent, 12 abandoned. 98 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 856 citations.

Every mine MSHA has registered in Stanislaus County, working or not, with the accident, fatality and citation record each one carries on this site. Active mines are listed first, then the rest by the weight of their record.

Abandoned and historical mine features in Stanislaus County →

Mines on register
19
Active
4
Fatalities on record
0
Citations issued
856
0 underground · 16 surface · 2 facilities 0 coal · 19 metal and non-metal 2 intermittent 12 abandoned 98 reported accidents, 1983–2025
Local economic context
ⓘ County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Stanislaus County, California · Population 552,250
0.1%
Mining share of county employment
$79,661
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
On the map 
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MSHA-registered mine, any status

Mines plot only where MSHA holds a surveyed coordinate for the site; mines the agency locates to a town, county or state centroid are in the counts and the list above but not drawn. Click a point for the mine's status and record.

Operators with the most mines herecurrent operator of record
Operator Mines Active Fatalities
George Reed Inc 2 0 0
Santa Fe Aggregates Inc 2 0 0
TMT ENTERPRISES, INC. 2 0 0
7/11 Materials Inc 1 1 0
Charles D Warner & Son Inc 1 0 0
Empire Plaster Sand Company 1 0 0
F M C Corp Industrial Chemic 1 0 0
Jim Brisco Enterprises, Inc 1 0 0
Knifer River 1 1 0
Martin Marietta Northern California Aggregates,LLC 1 1 0
Mines in Stanislaus County19 on register
  1. 7/11 Materials Inc
    Surface metal/non-metal · 7/11 Materials Inc · MSHA ID 0401943
    Active
  2. Hughson Aggregates
    Surface metal/non-metal · Martin Marietta Northern California Aggregates,LLC · MSHA ID 0401769
    Active
  3. Knife River Newman Aggregate
    Surface metal/non-metal · Knifer River · MSHA ID 0401774
    Active
  4. Ohe Sand & Gravel Inc
    Surface metal/non-metal · Ohe Sand & Gravel Inc · MSHA ID 0402800
    Active
  5. WATERFORD PIT & MILL
    Surface metal/non-metal · Santa Fe Aggregates Inc · MSHA ID 0401846
    Abandoned
  6. Portable Plant #1106
    Surface metal/non-metal · Teichert Aggregates · MSHA ID 0405386
    Abandoned
  7. Hickman Pit And Mill
    Surface metal/non-metal · Charles D Warner & Son Inc · MSHA ID 0401724
    Abandoned
  8. Delaney Aggregates
    Surface metal/non-metal · Jim Brisco Enterprises, Inc · MSHA ID 0405843
    Intermittent
  9. LA GRANGE PIT & MILL
    Surface metal/non-metal · Santa Fe Aggregates Inc · MSHA ID 0405016
    Intermittent
  10. PORTABLE FINLEY
    Surface metal/non-metal · TMT ENTERPRISES, INC. · MSHA ID 0405768
    Abandoned
  11. PORTABLE NORBERG
    Surface metal/non-metal · TMT Enterprises, Inc. · MSHA ID 0405787
    Abandoned
  12. CREE RANCH PIT
    Surface metal/non-metal · Western Stone Products · MSHA ID 0405161
    Abandoned
  13. Empire Plaster Sand Company
    Surface metal/non-metal · Empire Plaster Sand Company · MSHA ID 0401687
    Abandoned
  14. GREEN PIT
    Surface metal/non-metal · West Coast Aggregates Inc · MSHA ID 0405460
    Abandoned
  15. Martin Marietta Hughson Plant
    metal/non-metal · Recycled Base Materials, Inc · MSHA ID 0405994
    New Mine
  16. Modesto Mill
    Facility metal/non-metal · F M C Corp Industrial Chemic · MSHA ID 0401631
    Abandoned
  17. Reeves Pit & Mill
    Surface metal/non-metal · George Reed Inc · MSHA ID 0404389
    Abandoned
  18. Waterford Pit And Mill
    Surface metal/non-metal · George Reed Inc · MSHA ID 0402082
    Abandoned
  19. Westside Aggregates
    Facility metal/non-metal · Westside Aggregates · MSHA ID 0404473
    Abandoned

Status, type and operator are as reported to MSHA. Fatality and accident counts are MSHA's reportable accident records for the mine; citations are inspector-issued violations on record. Each mine's own page carries the full detail.

Other counties in CaliforniaAll counties →
How to read these numbers

The register is MSHA's Mine Data Retrieval System: every operation ever assigned a mine ID, including ones abandoned decades ago, so the count is a history of mining in the county, not a count of working mines. A mine's county is the one its operator reported to MSHA. Fatality and accident counts start with MSHA's reportable-accident records (1983 onward); citation counts are inspector-issued violations on record. We are an independent research tool, not MSHA.