Key Takeaway
Greenstone Materials Quarry is a active surface mine producing SandAndGravel, located in San Juan Capistrano, Orange County, CA. It has 78 violations on record (19 S&S) and $42K in proposed penalties. Operated by Greenstone Materials, Inc..
Greenstone Materials Quarry
Operator: Greenstone Materials, Inc.
Controller: Rich Holt
Location: San Juan Capistrano, Orange County, CA
Employees: 2
Recent Violations
View all 78 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/05/2025 | 56.14112(a)(1) | Non-S&S | LowNegligence | $151 |
| 06/05/2025 | 56.12028 | Non-S&S | HighNegligence | $245 |
| 11/06/2024 | 56.14112(a)(1) | Non-S&S | LowNegligence | $147 |
| 11/06/2024 | 56.4201(a)(2) | Non-S&S | ModNegligence | $147 |
| 06/26/2024 | 46.5 | Non-S&S | LowNegligence | $266 |
| 12/07/2023 | 56.15001 | Non-S&S | ModNegligence | $143 |
| 12/07/2023 | 56.11003 | S&S | ModNegligence | $143 |
| 10/17/2023 | 50.30(a) | Non-S&S | HighNegligence | $155 |
| 04/20/2023 | 56.4500 | Non-S&S | ModNegligence | $558 |
| 04/20/2023 | 56.12008 | Non-S&S | LowNegligence | $143 |
| 04/20/2023 | 56.12013(b) | Non-S&S | ModNegligence | $167 |
| 04/20/2023 | 56.18002(b) | Non-S&S | ModNegligence | $143 |
| 02/02/2023 | 56.11012 | Non-S&S | HighNegligence | $9,211 |
| 02/02/2023 | 56.14107(a) | Non-S&S | LowNegligence | $143 |
| 02/02/2023 | 56.14107(a) | Non-S&S | HighNegligence | $4,139 |
| 02/02/2023 | 56.18002(a)(1) | Non-S&S | HighNegligence | $9,211 |
| 05/05/2022 | 56.14112(b) | Non-S&S | LowNegligence | $133 |
| 05/05/2022 | 56.14112(a)(1) | Non-S&S | ModNegligence | $215 |
| 05/05/2022 | 56.14207 | Non-S&S | ModNegligence | $481 |
| 05/05/2022 | 50.30(a) | Non-S&S | HighNegligence | $133 |
Inspections
View all 34 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 06/04/2025 | 06/05/2025 | 15.50 | 1 |
| 11/05/2024 | 11/07/2024 | 23.75 | 1 |
| 06/26/2024 | 06/26/2024 | 9.00 | 1 |
| 12/07/2023 | 12/08/2023 | 17.00 | 1 |
| 04/20/2023 | 04/21/2023 | 10.50 | 1 |
| 02/02/2023 | 02/03/2023 | 19.25 | 1 |
| 05/05/2022 | 05/06/2022 | 21.00 | 1 |
| 01/18/2022 | 01/18/2022 | 5.00 | 1 |
| 01/10/2022 | 01/12/2022 | 34.75 | 2 |
| 06/28/2021 | 06/28/2021 | 3.75 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Greenstone Materials Quarry have?
Greenstone Materials Quarry has 78 MSHA violations on record, of which 19 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $42K.
What type of mine is Greenstone Materials Quarry?
Greenstone Materials Quarry is a Surface mine producing SandAndGravel, located in San Juan Capistrano, Orange County, CA. It currently has 2 employees.
Has anyone been injured or killed at Greenstone Materials Quarry?
According to MSHA records, Greenstone Materials Quarry has 0 reported accident/injury records and 0 fatalities on file.
Who operates Greenstone Materials Quarry?
Greenstone Materials Quarry is operated by Greenstone Materials, Inc. and controlled by Rich Holt. MSHA Mine ID: 0403299.