Key Takeaway
Rocky Canyon Plant is a active surface mine producing Stone, located in Atascadero, San Luis Obispo County, CA. It has 135 violations on record (29 S&S) and $41K in proposed penalties. Operated by Calportland Construction.
Rocky Canyon Plant
Operator: Calportland Construction
Controller: Taiheiyo Cement Corp
Location: Atascadero, San Luis Obispo County, CA
Employees: 14
Recent Violations
View all 135 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 03/05/2025 | 56.20003(a) | Non-S&S | LowNegligence | $151 |
| 07/25/2024 | 56.18002(a) | Non-S&S | ModNegligence | $147 |
| 07/25/2024 | 56.20003(a) | Non-S&S | ModNegligence | $147 |
| 07/25/2024 | 56.12032 | Non-S&S | LowNegligence | $147 |
| 07/25/2024 | 56.12019 | Non-S&S | LowNegligence | $147 |
| 02/13/2024 | 46.7(a) | S&S | ModNegligence | $1,039 |
| 02/12/2024 | 56.18002(a) | Non-S&S | HighNegligence | $147 |
| 02/12/2024 | 56.12030 | S&S | HighNegligence | $2,440 |
| 02/12/2024 | 56.12008 | Non-S&S | HighNegligence | $147 |
| 04/19/2023 | 47.44(b) | Non-S&S | LowNegligence | $143 |
| 04/19/2023 | 46.7(d) | S&S | ModNegligence | $792 |
| 11/02/2022 | 47.44(b) | Non-S&S | LowNegligence | $133 |
| 11/02/2022 | 56.16001 | Non-S&S | ModNegligence | $133 |
| 11/02/2022 | 56.20003(a) | S&S | ModNegligence | $198 |
| 04/05/2022 | 56.4011 | Non-S&S | ModNegligence | $133 |
| 04/05/2022 | 56.4500 | S&S | ModNegligence | $661 |
| 04/05/2022 | 56.11001 | S&S | LowNegligence | $133 |
| 04/05/2022 | 56.14132(b)(1)(i) | Non-S&S | LowNegligence | $133 |
| 10/05/2021 | 56.14107(a) | Non-S&S | ModNegligence | $125 |
| 10/05/2021 | 56.12004 | Non-S&S | LowNegligence | $125 |
Accidents & Injuries
View all 5 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 01/16/2026 | HANDTOOLS (NONPOWERED) | DAYS AWAY FROM WORK ONLY | None |
| 02/08/2023 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 338d lost |
| 02/21/2020 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/14/2011 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
| 10/18/2006 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 58 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/26/2026 | 02/26/2026 | 13.50 | 1 |
| 07/21/2025 | 07/22/2025 | 17.00 | 1 |
| 03/05/2025 | 03/06/2025 | 22.00 | 1 |
| 07/25/2024 | 07/25/2024 | 20.75 | 1 |
| 02/11/2024 | 02/13/2024 | 27.75 | 1 |
| 05/17/2023 | 05/17/2023 | 1.25 | 1 |
| 04/18/2023 | 04/20/2023 | 34.50 | 1 |
| 11/01/2022 | 11/03/2022 | 38.50 | 1 |
| 04/04/2022 | 04/06/2022 | 42.00 | 2 |
| 10/19/2021 | 10/19/2021 | 3.25 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Rocky Canyon Plant have?
Rocky Canyon Plant has 135 MSHA violations on record, of which 29 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $41K.
What type of mine is Rocky Canyon Plant?
Rocky Canyon Plant is a Surface mine producing Stone, located in Atascadero, San Luis Obispo County, CA. It currently has 14 employees.
Has anyone been injured or killed at Rocky Canyon Plant?
According to MSHA records, Rocky Canyon Plant has 5 reported accident/injury records and 0 fatalities on file.
Who operates Rocky Canyon Plant?
Rocky Canyon Plant is operated by Calportland Construction and controlled by Taiheiyo Cement Corp. MSHA Mine ID: 0404634.