Key Takeaway
Mayhew Plant is a active surface mine producing SandAndGravel, located in Corona, Riverside County, CA. It has 166 violations on record (52 S&S) and $52K in proposed penalties. Operated by MAMR LLC DBA Maitri Road Recycling.
Mayhew Plant
Operator: MAMR LLC DBA Maitri Road Recycling
Controller: Chandler Mayhew LLC; Mayhew Land Co LLC
Location: Corona, Riverside County, CA
Employees: 5
Recent Violations
View all 166 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/20/2025 | 46.9(a) | Non-S&S | HighNegligence | $151 |
| 10/15/2025 | 56.14107(a) | S&S | ModNegligence | $1,431 |
| 07/23/2025 | 50.30(a) | Non-S&S | ModNegligence | $151 |
| 11/26/2024 | 56.4201(a)(2) | Non-S&S | LowNegligence | $147 |
| 11/26/2024 | 56.18010 | Non-S&S | LowNegligence | $147 |
| 11/26/2024 | 56.15001 | Non-S&S | LowNegligence | $147 |
| 11/25/2024 | 56.14207 | Non-S&S | ModNegligence | $147 |
| 11/25/2024 | 56.14200 | S&S | ModNegligence | $357 |
| 11/25/2024 | 56.14110 | Non-S&S | ModNegligence | $147 |
| 11/25/2024 | 56.11001 | S&S | ModNegligence | $357 |
| 11/25/2024 | 56.9300(b) | S&S | ModNegligence | $357 |
| 10/16/2024 | 50.30(a) | Non-S&S | ModNegligence | $147 |
| 09/18/2024 | 56.1000 | Non-S&S | LowNegligence | $147 |
| 09/18/2024 | 46.3(b) | Non-S&S | LowNegligence | $147 |
| 09/18/2024 | 46.5(a) | S&S | LowNegligence | $227 |
| 10/03/2023 | 56.15002 | Non-S&S | LowNegligence | $143 |
| 12/21/2021 | 56.20003(a) | Non-S&S | ModNegligence | $133 |
| 12/20/2021 | 56.20003(a) | Non-S&S | LowNegligence | $133 |
| 05/18/2021 | 56.20003(a) | S&S | HighNegligence | $2,626 |
| 10/06/2020 | 56.20011 | Non-S&S | HighNegligence | $782 |
Accidents & Injuries
View all 13 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 04/20/2020 | OTHER | INJURIES DUE TO NATURAL CAUSES | None |
| 06/24/2014 | OTHER | INJURIES DUE TO NATURAL CAUSES | None |
| 10/06/2010 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/16/2008 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/09/2005 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 11/01/2005 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 8d restricted |
| 05/04/2005 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/14/2004 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 1d lost, 91d restricted |
| 02/25/2004 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/09/2003 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
Inspections
View all 73 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 10/15/2025 | 10/20/2025 | 21.00 | 1 |
| 12/10/2024 | 12/10/2024 | 12.00 | 1 |
| 11/25/2024 | 11/26/2024 | 30.00 | 1 |
| 11/08/2024 | 11/08/2024 | 1.00 | 1 |
| 10/23/2024 | 10/23/2024 | 3.50 | 1 |
| 09/18/2024 | 10/16/2024 | 13.00 | 1 |
| 04/17/2024 | 04/17/2024 | 11.50 | 1 |
| 10/03/2023 | 10/04/2023 | 13.50 | 1 |
| 10/02/2023 | 10/03/2023 | 5.50 | 1 |
| 04/12/2023 | 04/12/2023 | 2.50 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Mayhew Plant have?
Mayhew Plant has 166 MSHA violations on record, of which 52 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $52K.
What type of mine is Mayhew Plant?
Mayhew Plant is a Surface mine producing SandAndGravel, located in Corona, Riverside County, CA. It currently has 5 employees.
Has anyone been injured or killed at Mayhew Plant?
According to MSHA records, Mayhew Plant has 13 reported accident/injury records and 0 fatalities on file.
Who operates Mayhew Plant?
Mayhew Plant is operated by MAMR LLC DBA Maitri Road Recycling and controlled by Chandler Mayhew LLC; Mayhew Land Co LLC. MSHA Mine ID: 0403871.