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

Active Surface Nonmetal

Operator: Gillibrand Industrial Sands, LLC

Controller: Celine L Gillibrand Trust

Location: Simi Valley, Ventura County, CA

Employees: 55

275
Violations
59
S&S Violations
50
Accidents
$74K
Penalties

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

MSHA Mine ID0401888
Mine TypeSurface
StatusActive
CommodityNonmetal
SIC DescriptionSand, Industrial NEC
Employees55
Days/Week5.0
Hours/Shift8.0
Coordinates34.3325000, -118.7169440
Nearest TownSimi Valley

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.