Data / Mines / California / Big Seam Mine
Big Seam Mine, Placer County, California: 29 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Big Seam Mine is an active gold ore underground mine in Placer County, California, operated by Eagle's Nest Mining LLC with 8 employees on MSHA's record (mine ID 0404468). Since January 1, 2022 MSHA inspectors issued 29 citations and orders there with $4,851 in proposed penalties, and 2 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Big Seam Mine (MSHA mine ID 0404468) in Placer County, California: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 0404468
- Status
- Active since January 18, 2023
- Main commodity
- Gold ore
- Mine type
- Underground
- County
- Placer County, California
- Nearest town
- Foresthill
- Operator
- Eagle's Nest Mining LLC
- Parent company
- Focused Mining Enterprises LLC
- Employees
- 8
- MSHA field office
- Vacaville CA Field Office
- Citations and orders since January 1, 2022
- 29
- Significant and substantial
- 3 (10.3%)
- Closure orders
- 2
- High negligence or reckless
- 0
- Proposed penalties
- $4,851
- Amount paid so far
- $4,851
- Inspections
- 33
- Inspector hours on site
- 211
- Citations per inspection
- 0.88 (all mines 2.30)
- Accident reports
- 2
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- October 14, 2026
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 | 20 | 3 | $3,190 | 1 |
| 2023 | 5 | 0 | $1,065 | 0 |
| 2024 | 2 | 0 | $294 | 0 |
| 2025 | 1 | 0 | $151 | 0 |
| 2026 | 1 | 0 | $151 | 1 |
Standards cited most at Big Seam Mine
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 48.9 | Training of miners | 3 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.6202 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.11051 | Underground metal and nonmetal mines | 2 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 2 |
| 30 CFR 57.3203 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.5066 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.20032 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.8520 | Underground metal and nonmetal mines | 1 |
| 30 CFR 50.20-1 | Reporting of accidents, injuries and illnesses | 1 |
| 30 CFR 57.3200 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.12032 | Underground metal and nonmetal mines | 1 |
| 30 CFR 56.18013 | Surface metal and nonmetal mines | 1 |
| 30 CFR 57.8527 | Underground metal and nonmetal mines | 1 |
| 30 CFR 48.5 | Training of miners | 1 |
Injury and illness cases at Big Seam Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 2 |
What the accident reports at Big Seam Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handtools (nonpowered) | 1 |
| Handling of materials | 1 |
Equipment named in accident reports at Big Seam Mine
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 1 |
Other open mines in Placer County, California
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Capital Rock LLC | Capital Rock LLC | Placer County, CA | Graphite | 15 | 132 |
| Robinson Gravel Pit / Ophir Rd. Quarry | Don Robinson Sand & Gravel, Inc. | Placer County, CA | Construction sand and gravel | 2 | 7 |
| Bear River Materials | Green Vista Holdings | Placer County, CA | Construction sand and gravel | 2 | 4 |
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.