Key Takeaway
Pacific Plant is a active surface mine producing Nonmetal, located in St Louis, St Louis County, MO. It has 229 violations on record (41 S&S) and $91K in proposed penalties. Operated by U.S. Silica Company, LLC.
Pacific Plant
Operator: U.S. Silica Company, LLC
Controller: USS Holdings Inc
Location: St Louis, St Louis County, MO
Employees: 41
Recent Violations
View all 229 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/01/2025 | 56.11001 | Non-S&S | ModNegligence | $151 |
| 12/01/2025 | 56.14112(b) | Non-S&S | ModNegligence | $151 |
| 11/24/2025 | 56.3430 | S&S | ModNegligence | $8,315 |
| 06/25/2025 | 56.17001 | Non-S&S | ModNegligence | $151 |
| 06/25/2025 | 56.14107(a) | Non-S&S | ModNegligence | $193 |
| 06/25/2025 | 56.11001 | Non-S&S | ModNegligence | $151 |
| 06/23/2025 | 56.12030 | S&S | ModNegligence | $2,503 |
| 11/20/2024 | 56.4104 | Non-S&S | ModNegligence | $421 |
| 11/20/2024 | 56.4102 | S&S | ModNegligence | $2,079 |
| 11/19/2024 | 56.12004 | Non-S&S | ModNegligence | $421 |
| 11/19/2024 | 56.15020 | Non-S&S | ModNegligence | $1,395 |
| 09/11/2024 | 56.12032 | Non-S&S | LowNegligence | $280 |
| 09/11/2024 | 56.14107(a) | Non-S&S | LowNegligence | $280 |
| 08/29/2024 | 56.4201(a)(2) | Non-S&S | LowNegligence | $189 |
| 08/29/2024 | 56.12018 | Non-S&S | ModNegligence | $421 |
| 06/03/2024 | 56.12032 | Non-S&S | LowNegligence | $280 |
| 11/14/2023 | 56.14130(i) | Non-S&S | ModNegligence | $214 |
| 11/14/2023 | 56.12023 | Non-S&S | LowNegligence | $143 |
| 11/14/2023 | 46.9(c)(2) | Non-S&S | ModNegligence | $143 |
| 11/14/2023 | 56.5001(a)/56.5005 | Non-S&S | ModNegligence | $214 |
Accidents & Injuries
View all 43 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 01/06/2023 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/08/2022 | FALL OF ROOF OR BACK | DAYS AWAY FROM WORK ONLY | 128d lost |
| 12/05/2022 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 70d restricted |
| 08/17/2022 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 35d restricted |
| 03/05/2020 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 36d restricted |
| 07/10/2018 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 22d restricted |
| 05/19/2018 | MACHINERY | DAYS AWAY FROM WORK ONLY | 171d lost |
| 04/08/2018 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 8d restricted |
| 11/30/2017 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 14d restricted |
| 09/05/2017 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 4d restricted |
Inspections
View all 116 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/24/2025 | 12/03/2025 | 40.50 | 1 |
| 06/23/2025 | 06/26/2025 | 66.25 | 2 |
| 11/19/2024 | 11/22/2024 | 34.75 | 1 |
| 11/05/2024 | 11/05/2024 | 2.00 | 1 |
| 10/21/2024 | 10/23/2024 | 15.75 | 1 |
| 08/28/2024 | 09/11/2024 | 24.75 | 1 |
| 07/22/2024 | 07/22/2024 | 1.00 | 1 |
| 06/03/2024 | 06/20/2024 | 26.25 | 1 |
| 11/13/2023 | 11/21/2023 | 29.00 | 1 |
| 11/08/2023 | 11/08/2023 | 9.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Pacific Plant have?
Pacific Plant has 229 MSHA violations on record, of which 41 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $91K.
What type of mine is Pacific Plant?
Pacific Plant is a Surface mine producing Nonmetal, located in St Louis, St Louis County, MO. It currently has 41 employees.
Has anyone been injured or killed at Pacific Plant?
According to MSHA records, Pacific Plant has 43 reported accident/injury records and 0 fatalities on file.
Who operates Pacific Plant?
Pacific Plant is operated by U.S. Silica Company, LLC and controlled by USS Holdings Inc. MSHA Mine ID: 2300544.