Key Takeaway
San Emidio Plant is a active surface mine producing SandAndGravel, located in Mettler, Kern County, CA. It has 122 violations on record (26 S&S) and $121K in proposed penalties. Operated by CalMat Co.
San Emidio Plant
Operator: CalMat Co
Controller: Vulcan Materials Company
Location: Mettler, Kern County, CA
Employees: 25
Recent Violations
View all 122 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 07/09/2025 | 56.14207 | Non-S&S | LowNegligence | $151 |
| 07/09/2025 | 56.14100(a) | S&S | ModNegligence | $818 |
| 07/09/2025 | 56.14132(a) | S&S | ModNegligence | $366 |
| 07/08/2025 | 56.12004 | Non-S&S | LowNegligence | $151 |
| 07/08/2025 | 56.4430(b) | Non-S&S | LowNegligence | $151 |
| 02/19/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 02/28/2024 | 46.5(a) | S&S | ModNegligence | $1,220 |
| 02/27/2024 | 56.20003(a) | S&S | LowNegligence | $147 |
| 02/27/2024 | 56.18002(a) | S&S | ModNegligence | $328 |
| 09/12/2023 | 56.11001 | S&S | ModNegligence | $346 |
| 03/30/2023 | 56.12032 | S&S | LowNegligence | $232 |
| 03/30/2023 | 46.9(d)(1) | Non-S&S | HighNegligence | $143 |
| 03/29/2023 | 56.12004 | Non-S&S | LowNegligence | $143 |
| 03/29/2023 | 56.12028 | Non-S&S | ModNegligence | $232 |
| 05/23/2022 | 56.4603(c) | Non-S&S | LowNegligence | $133 |
| 02/24/2022 | 56.20010 | S&S | ModNegligence | $1,069 |
| 02/23/2022 | 56.13011 | Non-S&S | LowNegligence | $133 |
| 02/23/2022 | 56.11005 | Non-S&S | LowNegligence | $133 |
| 04/27/2021 | 56.4201(a)(2) | Non-S&S | LowNegligence | $125 |
| 04/27/2021 | 56.12004 | S&S | LowNegligence | $453 |
Accidents & Injuries
View all 21 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 09/19/2017 | ELECTRICAL | DAYS RESTRICTED ACTIVITY ONLY | 13d restricted |
| 04/11/2016 | HOISTING | DYS AWY FRM WRK & RESTRCTD ACT | 2d lost, 11d restricted |
| 05/20/2014 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 42d restricted |
| 12/01/2008 | POWERED HAULAGE | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/01/2008 | POWERED HAULAGE | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/28/2008 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/21/2008 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 04/04/2006 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 16d restricted |
| 04/03/2006 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 68d restricted |
| 03/06/2006 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 124d lost, 112d restricted |
Inspections
View all 75 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/03/2025 | 12/03/2025 | 3.50 | 1 |
| 09/11/2025 | 09/11/2025 | 2.75 | 1 |
| 07/07/2025 | 07/11/2025 | 55.50 | 2 |
| 06/16/2025 | 06/16/2025 | 7.00 | 1 |
| 03/26/2025 | 03/26/2025 | 6.00 | 1 |
| 02/18/2025 | 02/20/2025 | 32.00 | 1 |
| 05/01/2024 | 05/03/2024 | 17.00 | 1 |
| 02/27/2024 | 02/28/2024 | 23.75 | 1 |
| 01/22/2024 | 01/23/2024 | 8.25 | 1 |
| 09/21/2023 | 09/21/2023 | 8.50 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does San Emidio Plant have?
San Emidio Plant has 122 MSHA violations on record, of which 26 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $121K.
What type of mine is San Emidio Plant?
San Emidio Plant is a Surface mine producing SandAndGravel, located in Mettler, Kern County, CA. It currently has 25 employees.
Has anyone been injured or killed at San Emidio Plant?
According to MSHA records, San Emidio Plant has 21 reported accident/injury records and 1 fatalities on file.
Who operates San Emidio Plant?
San Emidio Plant is operated by CalMat Co and controlled by Vulcan Materials Company. MSHA Mine ID: 0401800.