Data / Mines / California / Stanislaus County
Mines in Stanislaus County, California: 8 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 8 open mines in Stanislaus County, California, run by 8 operators and employing 33 people. Since January 1, 2022 its inspectors issued 98 citations and orders there with $28,247 in proposed penalties, and operators reported 1 injury or illness case. The operators with the most open mines are 7/11 Materials Inc; Jim Brisco Enterprises, Inc; Ohe Sand & Gravel Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 8
- Operators
- 8
- Employees
- 33
- Active
- 4
- Intermittent
- 4
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 98
- Significant and substantial
- 25 (25.5%)
- Closure orders
- 4
- High negligence or reckless
- 0
- Proposed penalties
- $28,247
- Amount paid so far
- $26,460
- Inspections
- 58
- Inspector hours on site
- 373
- Citations per inspection
- 1.69 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- October 22, 2026
Operators with the most open mines in Stanislaus County, California
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| 7/11 Materials Inc | 1 | 7 | 48 | $22,271 | 0 |
| Jim Brisco Enterprises, Inc | 1 | 2 | 17 | $2,879 | 0 |
| Ohe Sand & Gravel Inc | 1 | 3 | 13 | $1,907 | 0 |
| Recycled Base Materials Inc | 1 | 4 | 10 | $0 | 0 |
| Martin Marietta Northern California Aggregates,LLC | 1 | 3 | 4 | $586 | 0 |
| Santa Fe Aggregates | 1 | 2 | 2 | $302 | 0 |
| Zanker and Zanker | 1 | 3 | 0 | $0 | 0 |
Operators with the most citations in Stanislaus County, California
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| 7/11 Materials Inc | 1 | 7 | 48 | $22,271 | 0 |
| Jim Brisco Enterprises, Inc | 1 | 2 | 17 | $2,879 | 0 |
| Ohe Sand & Gravel Inc | 1 | 3 | 13 | $1,907 | 0 |
| Recycled Base Materials Inc | 1 | 4 | 10 | $0 | 0 |
| Martin Marietta Northern California Aggregates,LLC | 1 | 3 | 4 | $586 | 0 |
| Santa Fe Aggregates | 1 | 2 | 2 | $302 | 0 |
| Zanker and Zanker | 1 | 3 | 0 | $0 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| 7/11 Materials Inc | 7/11 Materials Inc | Stanislaus County, CA | Construction sand and gravel | 7 | 48 |
| Delaney Aggregates | Jim Brisco Enterprises, Inc | Stanislaus County, CA | Construction sand and gravel | 2 | 17 |
| Ohe Sand & Gravel Inc | Ohe Sand & Gravel Inc | Stanislaus County, CA | Construction sand and gravel | 3 | 13 |
| Martin Marietta Hughson Plant | Recycled Base Materials Inc | Stanislaus County, CA | Construction sand and gravel | 4 | 10 |
| Hughson Aggregates | Martin Marietta Northern California Aggregates,LLC | Stanislaus County, CA | Construction sand and gravel | 3 | 4 |
| LA Grange Pit & Mill | Santa Fe Aggregates | Stanislaus County, CA | Construction sand and gravel | 2 | 2 |
| Dawson Quarry | Zanker and Zanker | Stanislaus County, CA | Construction sand and gravel | 3 | 0 |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 7 | 2 | $6,991 | 0 |
| 2023 | 25 | 9 | $10,631 | 0 |
| 2024 | 3 | 1 | $1,313 | 0 |
| 2025 | 28 | 4 | $5,369 | 1 |
| 2026 | 35 | 9 | $3,943 | 0 |
Standards cited most at mines in Stanislaus County, California
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 27 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.11027 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 4 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 4 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.1000 | Surface metal and nonmetal mines | 2 |
| 30 CFR 47.41 | Hazard communication | 2 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14110 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at mines in Stanislaus County, California
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at mines in Stanislaus County, California describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 1 |
Equipment named in accident reports at mines in Stanislaus County, California
| Equipment | Reports |
|---|---|
| Tugger | 1 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.