Key Takeaway
Azusa Rock is a active surface mine producing Stone, located in irwindale, Los Angeles County, CA. It has 55 violations on record (9 S&S) and $39K in proposed penalties. Operated by CalMat Co.
Azusa Rock
Operator: CalMat Co
Controller: Vulcan Materials Company
Location: irwindale, Los Angeles County, CA
Employees: 12
Recent Violations
View all 55 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 03/10/2025 | 56.16001 | Non-S&S | LowNegligence | $151 |
| 03/10/2025 | 56.14132(a) | S&S | ModNegligence | $818 |
| 01/04/2024 | 46.11(b)(6) | S&S | LowNegligence | $397 |
| 10/16/2023 | 50.30(a) | Non-S&S | HighNegligence | $147 |
| 07/16/2023 | 50.30(a) | Non-S&S | HighNegligence | $147 |
| 04/16/2023 | 50.30(a) | Non-S&S | HighNegligence | $143 |
| 01/16/2023 | 50.30(a) | Non-S&S | HighNegligence | $143 |
| 10/16/2022 | 50.30(a) | Non-S&S | HighNegligence | $143 |
| 03/27/2019 | 56.12004 | Non-S&S | ModNegligence | $121 |
| 03/27/2019 | 46.11(b)(3) | S&S | ModNegligence | $11,041 |
| 12/12/2017 | 56.14107(a) | Non-S&S | HighNegligence | $2,487 |
| 08/10/2016 | 50.30(a) | Non-S&S | ModNegligence | $235 |
| 12/10/2015 | 56.4200(b)(2) | Non-S&S | LowNegligence | $362 |
| 04/14/2015 | 56.14107(a) | Non-S&S | ModNegligence | $540 |
| 07/16/2014 | 50.30(a) | Non-S&S | LowNegligence | $100 |
| 12/31/2013 | 56.14100(c) | S&S | LowNegligence | $5,503 |
| 12/31/2013 | 56.14132(b)(1)(i) | S&S | LowNegligence | $12,248 |
| 12/31/2013 | 56.14107(a) | Non-S&S | ModNegligence | $100 |
| 03/17/2011 | 56.1000 | Non-S&S | LowNegligence | $100 |
| 04/13/2010 | 56.4201(a)(1) | Non-S&S | ModNegligence | $100 |
Accidents & Injuries
View all 7 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 03/26/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 35d restricted |
| 07/16/2018 | POWERED HAULAGE | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/10/2014 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/08/2014 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 23d restricted |
| 10/10/2002 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 08/17/2001 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 1d lost, 2d restricted |
| 08/16/2000 | DISORDERS (REPEATED TRAUMA) | OCCUPATNAL ILLNESS NOT DEG 1-6 | 24d lost, 75d restricted |
Inspections
View all 57 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/04/2025 | 11/12/2025 | 45.00 | 1 |
| 04/29/2025 | 04/29/2025 | 10.00 | 1 |
| 03/10/2025 | 03/10/2025 | 11.50 | 1 |
| 05/15/2024 | 05/16/2024 | 26.00 | 1 |
| 01/03/2024 | 01/05/2024 | 22.25 | 1 |
| 07/05/2023 | 07/06/2023 | 13.50 | 1 |
| 05/17/2023 | 05/17/2023 | 3.00 | 1 |
| 10/05/2022 | 10/07/2022 | 20.50 | 1 |
| 06/27/2022 | 06/29/2022 | 31.75 | 1 |
| 11/01/2021 | 11/03/2021 | 18.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Azusa Rock have?
Azusa Rock has 55 MSHA violations on record, of which 9 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $39K.
What type of mine is Azusa Rock?
Azusa Rock is a Surface mine producing Stone, located in irwindale, Los Angeles County, CA. It currently has 12 employees.
Has anyone been injured or killed at Azusa Rock?
According to MSHA records, Azusa Rock has 7 reported accident/injury records and 0 fatalities on file.
Who operates Azusa Rock?
Azusa Rock is operated by CalMat Co and controlled by Vulcan Materials Company. MSHA Mine ID: 0404674.