Data / Mines / California / Butte County
Mines in Butte County, California: 10 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 10 open mines in Butte County, California, run by 9 operators and employing 81 people. Since January 1, 2022 its inspectors issued 223 citations and orders there with $97,065 in proposed penalties, and operators reported 1 injury or illness case. The operators with the most open mines are Franklin Construction Inc; Mineral Resources LLC; Industrial Silica Products, LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 10
- Operators
- 9
- Employees
- 81
- Intermittent
- 6
- Active
- 4
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 223
- Significant and substantial
- 35 (15.7%)
- Closure orders
- 12
- High negligence or reckless
- 8
- Proposed penalties
- $97,065
- Amount paid so far
- $68,933
- Inspections
- 142
- Inspector hours on site
- 691
- Citations per inspection
- 1.57 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- November 4, 2026
Operators with the most open mines in Butte 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 |
|---|---|---|---|---|---|
| Franklin Construction Inc | 2 | 7 | 2 | $307 | 0 |
| Mineral Resources LLC | 1 | 8 | 57 | $32,670 | 0 |
| Industrial Silica Products, LLC | 1 | 30 | 52 | $46,575 | 0 |
| Reynoso Brothers Construction | 1 | 5 | 34 | $5,290 | 0 |
| Brown General Engineering, Inc | 1 | 2 | 30 | $5,160 | 1 |
| Bangor Aggregates LLC | 1 | 3 | 5 | $725 | 0 |
| Triangle Rock Products | 1 | 19 | 2 | $991 | 0 |
Operators with the most citations in Butte 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 |
|---|---|---|---|---|---|
| Mineral Resources LLC | 1 | 8 | 57 | $32,670 | 0 |
| Industrial Silica Products, LLC | 1 | 30 | 52 | $46,575 | 0 |
| Reynoso Brothers Construction | 1 | 5 | 34 | $5,290 | 0 |
| Brown General Engineering, Inc | 1 | 2 | 30 | $5,160 | 1 |
| Bangor Aggregates LLC | 1 | 3 | 5 | $725 | 0 |
| Franklin Construction Inc | 2 | 7 | 2 | $307 | 0 |
| Triangle Rock Products | 1 | 19 | 2 | $991 | 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 |
|---|---|---|---|---|---|
| Morris Ravine Mine | Mineral Resources LLC | Butte County, CA | Construction sand and gravel | 8 | 57 |
| Sierra Silica Resources | Industrial Silica Products, LLC | Butte County, CA | Sand, industrial | 30 | 52 |
| Reynoso Brothers Quarry | Reynoso Brothers Construction | Butte County, CA | Sand, common | 5 | 34 |
| Wheelock Road Rock Pit | Brown General Engineering, Inc | Butte County, CA | Crushed, broken stone | 2 | 30 |
| Bangor Quarry | Bangor Aggregates LLC | Butte County, CA | Dimension traprock | 3 | 5 |
| TRP Table Mountain Plant | Triangle Rock Products | Butte County, CA | Crushed, broken stone | 19 | 2 |
| Almond Avenue Mine | Franklin Construction Inc | Butte County, CA | Construction sand and gravel | 4 | 1 |
| Little Chico Creek | Franklin Construction Inc | Butte County, CA | Crushed, broken stone | 3 | 1 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken stone | 4 | 40% |
| Construction sand and gravel | 3 | 30% |
| Dimension traprock | 1 | 10% |
| Sand, industrial | 1 | 10% |
| Sand, common | 1 | 10% |
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 | 33 | 10 | $22,763 | 0 |
| 2023 | 84 | 13 | $51,096 | 1 |
| 2024 | 15 | 0 | $2,372 | 0 |
| 2025 | 54 | 5 | $8,852 | 0 |
| 2026 | 37 | 7 | $11,982 | 0 |
Standards cited most at mines in Butte 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 | 26 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 15 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.15005 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.23002 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 4 |
Injury and illness cases at mines in Butte County, California
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| No lost time, or an occupational illness | 1 |
What the accident reports at mines in Butte 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 Butte County, California
| Equipment | Reports |
|---|---|
| Hand tools (powered) | 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.