Key Takeaway
Merced Aggregates is a active surface mine producing SandAndGravel, located in Merced, Merced County, CA. It has 155 violations on record (35 S&S) and $58K in proposed penalties. Operated by Martin Marietta Northern California Aggregates,LLC.
Merced Aggregates
Operator: Martin Marietta Northern California Aggregates,LLC
Controller: Martin Marietta Materials Inc
Location: Merced, Merced County, CA
Employees: 10
Recent Violations
View all 155 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 01/14/2026 | 56.14100(a) | Non-S&S | ModNegligence | $177 |
| 05/06/2025 | 56.11001 | Non-S&S | ModNegligence | $151 |
| 12/10/2024 | 56.12004 | Non-S&S | ModNegligence | $204 |
| 06/21/2024 | 56.14107(a) | Non-S&S | LowNegligence | $147 |
| 06/21/2024 | 56.11001 | Non-S&S | LowNegligence | $147 |
| 02/01/2024 | 56.12006 | Non-S&S | LowNegligence | $147 |
| 04/06/2022 | 56.4402 | Non-S&S | ModNegligence | $133 |
| 04/06/2022 | 56.14207 | Non-S&S | ModNegligence | $133 |
| 08/19/2021 | 56.14100(a) | Non-S&S | ModNegligence | $125 |
| 08/19/2021 | 56.12023 | Non-S&S | ModNegligence | $125 |
| 03/23/2021 | 56.14100(b) | S&S | ModNegligence | $328 |
| 03/23/2021 | 56.20003(b) | Non-S&S | ModNegligence | $125 |
| 03/23/2021 | 56.14107(a) | Non-S&S | ModNegligence | $125 |
| 06/16/2020 | 56.11027 | Non-S&S | ModNegligence | $123 |
| 01/30/2020 | 56.12004 | Non-S&S | ModNegligence | $123 |
| 02/13/2019 | 56.12032 | Non-S&S | ModNegligence | $142 |
| 02/13/2019 | 56.14100(b) | S&S | ModNegligence | $319 |
| 06/26/2018 | 56.18002(a) | Non-S&S | ModNegligence | $128 |
| 12/07/2017 | 56.11001 | Non-S&S | ModNegligence | $138 |
| 12/07/2017 | 56.12032 | Non-S&S | ModNegligence | $138 |
Accidents & Injuries
View all 15 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 03/14/2011 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 9d restricted |
| 04/30/2008 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 27d restricted |
| 04/23/2007 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 90d restricted |
| 02/01/2007 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 4d restricted |
| 10/20/2005 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
| 10/17/2005 | MACHINERY | DYS AWY FRM WRK & RESTRCTD ACT | 12d lost, 30d restricted |
| 06/27/2005 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 33d lost, 24d restricted |
| 05/09/2005 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 06/03/2004 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 04/14/2004 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
Inspections
View all 69 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/13/2026 | 01/14/2026 | 15.75 | 1 |
| 05/06/2025 | 05/07/2025 | 10.75 | 1 |
| 12/10/2024 | 12/10/2024 | 11.25 | 1 |
| 06/21/2024 | 06/21/2024 | 14.00 | 1 |
| 05/22/2024 | 05/22/2024 | 6.00 | 1 |
| 02/01/2024 | 02/01/2024 | 13.25 | 1 |
| 07/30/2023 | 08/01/2023 | 9.25 | 1 |
| 06/26/2023 | 06/26/2023 | 13.50 | 1 |
| 09/01/2022 | 09/01/2022 | 12.00 | 1 |
| 04/05/2022 | 04/06/2022 | 16.25 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Merced Aggregates have?
Merced Aggregates has 155 MSHA violations on record, of which 35 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $58K.
What type of mine is Merced Aggregates?
Merced Aggregates is a Surface mine producing SandAndGravel, located in Merced, Merced County, CA. It currently has 10 employees.
Has anyone been injured or killed at Merced Aggregates?
According to MSHA records, Merced Aggregates has 15 reported accident/injury records and 0 fatalities on file.
Who operates Merced Aggregates?
Merced Aggregates is operated by Martin Marietta Northern California Aggregates,LLC and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 0402841.