Key Takeaway
SIERRA ROCK PRODUCTS is a active surface mine producing Stone, located in JAMESTOWN, Tuolumne County, CA. It has 222 violations on record (57 S&S) and $88K in proposed penalties. Operated by Sierra Rock Products.
SIERRA ROCK PRODUCTS
Operator: Sierra Rock Products
Controller: James D Hatler
Location: JAMESTOWN, Tuolumne County, CA
Employees: 4
Recent Violations
View all 222 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 07/16/2025 | 50.30(a) | Non-S&S | LowNegligence | $0 |
| 06/10/2025 | 56.23002(a) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.9300(a) | S&S | HighNegligence | $1,320 |
| 06/10/2025 | 56.14108 | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.12004 | Non-S&S | LowNegligence | $151 |
| 06/10/2025 | 56.14100(b) | S&S | HighNegligence | $1,320 |
| 06/10/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.16001 | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.20003(a) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.11027 | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.11003 | S&S | ModNegligence | $151 |
| 06/10/2025 | 56.14107(a) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.9300(a) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.12032 | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.11012 | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.20003(a) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.14107(a) | Non-S&S | ModNegligence | $151 |
| 02/22/2024 | Non-S&S | LowNegligence | $147 | |
| 08/29/2023 | 47.54(a) | S&S | ModNegligence | $143 |
Inspections
View all 71 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/23/2026 | 03/01/2026 | 20.50 | 2 |
| 06/18/2025 | 06/18/2025 | 13.00 | 1 |
| 06/09/2025 | 06/10/2025 | 26.00 | 2 |
| 02/19/2025 | 02/22/2025 | 18.00 | 1 |
| 06/26/2024 | 06/26/2024 | 13.00 | 1 |
| 02/22/2024 | 02/24/2024 | 12.00 | 1 |
| 09/17/2023 | 09/18/2023 | 11.00 | 1 |
| 08/25/2023 | 08/31/2023 | 12.50 | 1 |
| 08/24/2022 | 08/24/2022 | 3.75 | 1 |
| 02/24/2022 | 02/24/2022 | 10.75 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does SIERRA ROCK PRODUCTS have?
SIERRA ROCK PRODUCTS has 222 MSHA violations on record, of which 57 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $88K.
What type of mine is SIERRA ROCK PRODUCTS?
SIERRA ROCK PRODUCTS is a Surface mine producing Stone, located in JAMESTOWN, Tuolumne County, CA. It currently has 4 employees.
Has anyone been injured or killed at SIERRA ROCK PRODUCTS?
According to MSHA records, SIERRA ROCK PRODUCTS has 0 reported accident/injury records and 0 fatalities on file.
Who operates SIERRA ROCK PRODUCTS?
SIERRA ROCK PRODUCTS is operated by Sierra Rock Products and controlled by James D Hatler. MSHA Mine ID: 0403489.