BLUE MOUNTAIN MINERALS
Active
Surface
Stone
Operator: Blue Mountain Minerals
Controller: Portola Minerals Company
Location: columbia, Tuolumne County, CA
Employees: 54
353
Violations
74
S&S Violations
76
Accidents
$155K
Penalties
Recent Violations
View all 353 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 02/25/2026 | 56.17001 | Non-S&S | ModNegligence | $0 |
| 02/24/2026 | 56.20003(b) | Non-S&S | ModNegligence | $0 |
| 02/24/2026 | 48.27(a) | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.9300(a) | S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14101(a)(2) | S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14101(a)(2) | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14207 | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14132(b)(1)(i) | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14132(a) | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14207 | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.14100(b) | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.9300(a) | Non-S&S | ModNegligence | $0 |
| 10/15/2025 | 56.14100(b) | Non-S&S | LowNegligence | $151 |
| 05/15/2025 | 56.3200 | Non-S&S | LowNegligence | $366 |
| 05/15/2025 | 56.11001 | Non-S&S | LowNegligence | $151 |
| 05/14/2025 | 56.14107(a) | Non-S&S | ModNegligence | $1,037 |
| 05/14/2025 | 56.11002 | Non-S&S | ModNegligence | $151 |
| 05/14/2025 | 56.14112(a)(1) | Non-S&S | ModNegligence | $226 |
| 05/14/2025 | 56.16001 | S&S | LowNegligence | $336 |
| 05/14/2025 | 56.11017 | Non-S&S | ModNegligence | $226 |
Accidents & Injuries
View all 76 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 01/06/2026 | DISORDERS (REPEATED TRAUMA) | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 01/06/2026 | MACHINERY | DAYS AWAY FROM WORK ONLY | 1d lost |
| 06/21/2025 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 06/12/2025 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/08/2024 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 38d restricted |
| 02/14/2024 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 3d restricted |
| 09/12/2023 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 04/04/2023 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 87d lost |
| 02/18/2023 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 7d lost |
| 01/10/2023 | DISORDERS (PHYSICAL AGENTS) | OCCUPATNAL ILLNESS NOT DEG 1-6 | 1d lost |
Inspections
View all 83 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/17/2026 | 02/25/2026 | 59.25 | 1 |
| 10/14/2025 | 10/21/2025 | 16.00 | 1 |
| 05/21/2025 | 05/21/2025 | 3.25 | 1 |
| 05/12/2025 | 05/16/2025 | 84.50 | 2 |
| 02/04/2025 | 02/04/2025 | 3.75 | 1 |
| 01/12/2025 | 01/17/2025 | 44.50 | 1 |
| 08/27/2024 | 08/28/2024 | 24.00 | 1 |
| 02/23/2024 | 02/24/2024 | 14.00 | 1 |
| 10/05/2023 | 10/13/2023 | 23.75 | 1 |
| 08/09/2023 | 08/24/2023 | 34.25 | 1 |
Mine Details
MSHA Mine ID0404716
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees54
Days/Week5.0
Hours/Shift8.0
Coordinates38.0694440, -120.4230560
Nearest Towncolumbia
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Frequently Asked Questions
How many MSHA violations does BLUE MOUNTAIN MINERALS have?
BLUE MOUNTAIN MINERALS has 353 MSHA violations on record, of which 74 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $155K.
What type of mine is BLUE MOUNTAIN MINERALS?
BLUE MOUNTAIN MINERALS is a Surface mine producing Stone, located in columbia, Tuolumne County, CA. It currently has 54 employees.
Has anyone been injured or killed at BLUE MOUNTAIN MINERALS?
According to MSHA records, BLUE MOUNTAIN MINERALS has 76 reported accident/injury records and 0 fatalities on file.
Who operates BLUE MOUNTAIN MINERALS?
BLUE MOUNTAIN MINERALS is operated by Blue Mountain Minerals and controlled by Portola Minerals Company. MSHA Mine ID: 0404716.