Key Takeaway
Acton Clay Quarries is a active surface mine producing Nonmetal, located in Acton, Los Angeles County, CA. It has 98 violations on record (19 S&S) and $18K in proposed penalties. Operated by North Star Minerals Inc.
Acton Clay Quarries
Operator: North Star Minerals Inc
Controller: Yen Richardson; Garry Richardson; Scott Richardson
Location: Acton, Los Angeles County, CA
Employees: 3
Recent Violations
View all 98 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/30/2025 | 56.4501 | Non-S&S | LowNegligence | $151 |
| 10/30/2025 | 56.12008 | Non-S&S | ModNegligence | $151 |
| 10/30/2025 | 56.12028 | S&S | HighNegligence | $1,431 |
| 10/16/2024 | 50.30(a) | Non-S&S | LowNegligence | $147 |
| 07/17/2024 | 56.14101(a)(2) | S&S | LowNegligence | $189 |
| 08/23/2023 | 56.12023 | Non-S&S | LowNegligence | $143 |
| 06/09/2022 | 50.12 | Non-S&S | ModNegligence | $133 |
| 10/16/2021 | 50.30(a) | Non-S&S | HighNegligence | $133 |
| 07/13/2021 | 46.7(c) | S&S | ModNegligence | $395 |
| 07/13/2021 | 56.4201(a)(5) | Non-S&S | ModNegligence | $125 |
| 12/22/2020 | 56.12018 | S&S | ModNegligence | $355 |
| 12/22/2020 | 56.12028 | Non-S&S | HighNegligence | $237 |
| 08/26/2020 | 56.14132(a) | S&S | ModNegligence | $351 |
| 02/11/2020 | 56.12032 | Non-S&S | ModNegligence | $123 |
| 02/11/2020 | 56.14132(b)(1)(i) | Non-S&S | ModNegligence | $123 |
| 02/11/2020 | 46.6(b) | Non-S&S | ModNegligence | $137 |
| 06/05/2019 | 46.12(a)(2) | Non-S&S | ModNegligence | $121 |
| 06/04/2019 | 56.14112(b) | Non-S&S | LowNegligence | $121 |
| 06/04/2019 | 56.4201(a)(2) | Non-S&S | ModNegligence | $121 |
| 06/04/2019 | Non-S&S | ModNegligence | $135 |
Accidents & Injuries
View all 6 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 02/10/2026 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/03/2024 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 3d lost, 14d restricted |
| 06/03/2022 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | 266d lost |
| 04/08/2002 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/30/2001 | POWERED HAULAGE | DYS AWY FRM WRK & RESTRCTD ACT | 3d lost, 2d restricted |
| 08/09/2000 | HANDTOOLS (NONPOWERED) | DAYS AWAY FROM WORK ONLY | 5d lost |
Inspections
View all 66 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/16/2025 | 12/16/2025 | 10.00 | 1 |
| 10/29/2025 | 10/31/2025 | 24.00 | 1 |
| 06/26/2025 | 06/26/2025 | 15.50 | 1 |
| 12/17/2024 | 12/18/2024 | 13.25 | 1 |
| 11/04/2024 | 11/06/2024 | 2.75 | 1 |
| 07/16/2024 | 07/19/2024 | 18.50 | 1 |
| 03/13/2024 | 03/13/2024 | 11.00 | 1 |
| 08/23/2023 | 08/24/2023 | 22.00 | 1 |
| 08/23/2023 | 08/23/2023 | 1.00 | 1 |
| 04/05/2023 | 04/05/2023 | 11.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Acton Clay Quarries have?
Acton Clay Quarries has 98 MSHA violations on record, of which 19 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $18K.
What type of mine is Acton Clay Quarries?
Acton Clay Quarries is a Surface mine producing Nonmetal, located in Acton, Los Angeles County, CA. It currently has 3 employees.
Has anyone been injured or killed at Acton Clay Quarries?
According to MSHA records, Acton Clay Quarries has 6 reported accident/injury records and 0 fatalities on file.
Who operates Acton Clay Quarries?
Acton Clay Quarries is operated by North Star Minerals Inc and controlled by Yen Richardson; Garry Richardson; Scott Richardson. MSHA Mine ID: 0405169.