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

Active Surface Nonmetal

Operator: North Star Minerals Inc

Controller: Yen Richardson; Garry Richardson; Scott Richardson

Location: Acton, Los Angeles County, CA

Employees: 3

98
Violations
19
S&S Violations
6
Accidents
$18K
Penalties

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

MSHA Mine ID0405169
Mine TypeSurface
StatusActive
CommodityNonmetal
SIC DescriptionClay, Ceramic, Refractory Mnls.
Employees3
Days/Week5.0
Hours/Shift8.0
Coordinates34.4358330, -118.1511110
Nearest TownActon

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.