Key Takeaway
Canyon Rock Plant is a active surface mine producing Nonmetal, located in Simi Valley, Ventura County, CA. It has 275 violations on record (59 S&S) and $74K in proposed penalties. Operated by Gillibrand Industrial Sands, LLC.
Canyon Rock Plant
Operator: Gillibrand Industrial Sands, LLC
Controller: Celine L Gillibrand Trust
Location: Simi Valley, Ventura County, CA
Employees: 55
Recent Violations
View all 275 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 02/19/2026 | 56.4201(a)(2) | Non-S&S | LowNegligence | $0 |
| 02/18/2026 | 56.14100(b) | Non-S&S | LowNegligence | $0 |
| 02/18/2026 | 56.9300(b) | Non-S&S | LowNegligence | $0 |
| 02/18/2026 | 56.14100(b) | Non-S&S | ModNegligence | $0 |
| 06/25/2025 | 56.12032 | Non-S&S | LowNegligence | $165 |
| 01/29/2025 | 56.14107(a) | Non-S&S | LowNegligence | $151 |
| 01/28/2025 | 56.14100(a) | S&S | LowNegligence | $959 |
| 01/28/2025 | 56.9300(a) | Non-S&S | LowNegligence | $151 |
| 09/03/2024 | 50.20-1 | Non-S&S | ModNegligence | $147 |
| 09/03/2024 | 50.20-1 | Non-S&S | ModNegligence | $147 |
| 06/30/2024 | 50.20(a) | Non-S&S | ModNegligence | $147 |
| 05/23/2024 | 56.14112(a)(1) | Non-S&S | LowNegligence | $147 |
| 05/22/2024 | 56.12002 | Non-S&S | LowNegligence | $147 |
| 05/22/2024 | 47.44(b) | Non-S&S | ModNegligence | $189 |
| 05/21/2024 | 47.44(b) | Non-S&S | LowNegligence | $147 |
| 01/16/2024 | 50.30(a) | Non-S&S | HighNegligence | $147 |
| 12/13/2023 | 56.16006 | Non-S&S | LowNegligence | $147 |
| 12/13/2023 | 56.12021 | Non-S&S | HighNegligence | $535 |
| 12/12/2023 | 56.18002(a) | Non-S&S | ModNegligence | $161 |
| 12/12/2023 | 56.16001 | S&S | ModNegligence | $797 |
Accidents & Injuries
View all 50 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 07/21/2025 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 7d restricted |
| 05/28/2025 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | None |
| 03/16/2025 | OTHER | INJURIES DUE TO NATURAL CAUSES | 47d lost, 13d restricted |
| 03/07/2025 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 10d restricted |
| 10/07/2024 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 06/19/2024 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 102d restricted |
| 11/20/2023 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 1d lost, 28d restricted |
| 09/27/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 134d restricted |
| 01/14/2023 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 01/09/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 11d restricted |
Inspections
View all 87 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/23/2026 | 02/23/2026 | 3.50 | 1 |
| 02/17/2026 | 02/19/2026 | 45.00 | 2 |
| 02/17/2026 | 02/19/2026 | 2.00 | 1 |
| 11/25/2025 | 11/25/2025 | 4.50 | 1 |
| 09/08/2025 | 09/08/2025 | 7.00 | 1 |
| 06/24/2025 | 06/25/2025 | 18.25 | 1 |
| 06/24/2025 | 06/24/2025 | 1.75 | 1 |
| 03/27/2025 | 03/27/2025 | 6.00 | 1 |
| 01/27/2025 | 01/29/2025 | 26.25 | 1 |
| 09/03/2024 | 09/03/2024 | 2.50 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Canyon Rock Plant have?
Canyon Rock Plant has 275 MSHA violations on record, of which 59 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $74K.
What type of mine is Canyon Rock Plant?
Canyon Rock Plant is a Surface mine producing Nonmetal, located in Simi Valley, Ventura County, CA. It currently has 55 employees.
Has anyone been injured or killed at Canyon Rock Plant?
According to MSHA records, Canyon Rock Plant has 50 reported accident/injury records and 0 fatalities on file.
Who operates Canyon Rock Plant?
Canyon Rock Plant is operated by Gillibrand Industrial Sands, LLC and controlled by Celine L Gillibrand Trust. MSHA Mine ID: 0401888.