Maitri Sand and Gravel
Active
Surface
SandAndGravel
Operator: Martin Marietta Southern California Aggregates,LLC
Controller: Martin Marietta Materials Inc
Location: Corona, Riverside County, CA
Employees: 15
407
Violations
97
S&S Violations
24
Accidents
$236K
Penalties
Recent Violations
View all 407 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/23/2025 | 56.18002(b) | Non-S&S | HighNegligence | $151 |
| 10/23/2025 | 56.14112(b) | Non-S&S | LowNegligence | $151 |
| 04/01/2025 | 56.14110 | Non-S&S | LowNegligence | $151 |
| 04/01/2025 | 56.12004 | Non-S&S | ModNegligence | $151 |
| 04/01/2025 | 46.9(g) | Non-S&S | LowNegligence | $151 |
| 12/11/2024 | 56.14132(b)(1) | Non-S&S | ModNegligence | $151 |
| 12/11/2024 | 56.14112(b) | S&S | LowNegligence | $151 |
| 09/19/2024 | 56.12004 | Non-S&S | LowNegligence | $221 |
| 09/19/2024 | 56.14107(a) | S&S | LowNegligence | $492 |
| 09/17/2024 | 56.12004 | Non-S&S | LowNegligence | $535 |
| 09/17/2024 | 56.12004 | Non-S&S | LowNegligence | $239 |
| 09/17/2024 | 56.12008 | Non-S&S | LowNegligence | $535 |
| 09/17/2024 | 56.12004 | S&S | LowNegligence | $2,644 |
| 01/03/2024 | 56.11003 | Non-S&S | LowNegligence | $147 |
| 01/03/2024 | 56.4200(b)(2) | Non-S&S | ModNegligence | $221 |
| 01/03/2024 | 56.4201(a)(2) | Non-S&S | ModNegligence | $221 |
| 01/03/2024 | 56.14100(d) | Non-S&S | ModNegligence | $221 |
| 01/03/2024 | 56.12005 | Non-S&S | ModNegligence | $736 |
| 01/03/2024 | 56.12008 | Non-S&S | LowNegligence | $147 |
| 08/31/2023 | 56.4102 | Non-S&S | ModNegligence | $143 |
Accidents & Injuries
View all 24 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 09/26/2024 | STEPPING OR KNEELING ON OBJECT | DAYS AWAY FROM WORK ONLY | 7d lost |
| 07/18/2024 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | 60d lost |
| 02/24/2023 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/25/2022 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 2d lost |
| 06/11/2021 | STRIKING OR BUMPING | DAYS AWAY FROM WORK ONLY | 1d lost |
| 11/24/2020 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/08/2020 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 5d lost |
| 03/06/2020 | FIRE | ACCIDENT ONLY | None |
| 08/16/2018 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 77d lost, 26d restricted |
| 04/27/2018 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
Inspections
View all 95 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/25/2025 | 11/25/2025 | 14.50 | 1 |
| 10/22/2025 | 10/24/2025 | 23.00 | 1 |
| 08/11/2025 | 08/12/2025 | 16.00 | 1 |
| 07/02/2025 | 07/02/2025 | 5.00 | 1 |
| 04/01/2025 | 04/03/2025 | 32.00 | 1 |
| 12/23/2024 | 12/23/2024 | 10.00 | 1 |
| 12/11/2024 | 12/12/2024 | 22.50 | 1 |
| 09/16/2024 | 09/19/2024 | 27.25 | 1 |
| 01/02/2024 | 01/04/2024 | 19.00 | 1 |
| 01/02/2024 | 01/03/2024 | 5.00 | 1 |
Mine Details
MSHA Mine ID0404157
Mine TypeSurface
StatusActive
CommoditySandAndGravel
SIC DescriptionConstruction Sand and Gravel
Employees15
Days/Week5.0
Hours/Shift10.0
Coordinates33.7575000, -117.4830560
Nearest TownCorona
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Frequently Asked Questions
How many MSHA violations does Maitri Sand and Gravel have?
Maitri Sand and Gravel has 407 MSHA violations on record, of which 97 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $236K.
What type of mine is Maitri Sand and Gravel?
Maitri Sand and Gravel is a Surface mine producing SandAndGravel, located in Corona, Riverside County, CA. It currently has 15 employees.
Has anyone been injured or killed at Maitri Sand and Gravel?
According to MSHA records, Maitri Sand and Gravel has 24 reported accident/injury records and 0 fatalities on file.
Who operates Maitri Sand and Gravel?
Maitri Sand and Gravel is operated by Martin Marietta Southern California Aggregates,LLC and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 0404157.