Key Takeaway
Mapleton Depot Plant is a active surface mine producing Nonmetal, located in Mapleton Depot, Huntingdon County, PA. It has 205 violations on record (11 S&S) and $38K in proposed penalties. Operated by U.S. Silica Company, LLC.
Mapleton Depot Plant
Operator: U.S. Silica Company, LLC
Controller: USS Holdings Inc
Location: Mapleton Depot, Huntingdon County, PA
Employees: 42
Recent Violations
View all 205 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/17/2025 | 56.14100(b) | Non-S&S | LowNegligence | $151 |
| 12/17/2025 | 56.12030 | Non-S&S | LowNegligence | $151 |
| 12/16/2025 | 56.4201(a)(1) | Non-S&S | ModNegligence | $151 |
| 07/23/2025 | 56.14132(a) | Non-S&S | LowNegligence | $151 |
| 07/01/2025 | 56.14100(b) | Non-S&S | LowNegligence | $151 |
| 02/11/2025 | 56.12004 | Non-S&S | LowNegligence | $151 |
| 01/28/2025 | 56.12020 | Non-S&S | ModNegligence | $151 |
| 05/07/2024 | 56.14132(a) | Non-S&S | LowNegligence | $147 |
| 05/07/2024 | 56.18002(c) | Non-S&S | ModNegligence | $147 |
| 05/07/2024 | 56.14115(b) | Non-S&S | LowNegligence | $147 |
| 12/14/2023 | 56.4201(a)(1) | Non-S&S | LowNegligence | $147 |
| 12/13/2023 | 56.11001 | Non-S&S | LowNegligence | $147 |
| 12/13/2023 | 47.44(b) | Non-S&S | LowNegligence | $147 |
| 12/13/2023 | 56.20011 | Non-S&S | LowNegligence | $147 |
| 12/12/2023 | 56.12032 | Non-S&S | LowNegligence | $147 |
| 05/24/2023 | 56.14132(a) | Non-S&S | LowNegligence | $155 |
| 05/24/2023 | 56.4200(b)(2) | Non-S&S | ModNegligence | $143 |
| 05/24/2023 | 56.12002 | Non-S&S | LowNegligence | $155 |
| 05/23/2023 | 56.14100(b) | Non-S&S | ModNegligence | $182 |
| 05/19/2023 | 56.4101 | Non-S&S | LowNegligence | $143 |
Accidents & Injuries
View all 53 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 12/29/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 10/27/2025 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/29/2024 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 53d lost |
| 10/15/2023 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/21/2022 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/24/2021 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 25d lost, 4d restricted |
| 08/05/2019 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/27/2019 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/22/2018 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 31d lost, 52d restricted |
| 11/01/2018 | POWERED HAULAGE | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 73 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/15/2025 | 12/23/2025 | 46.75 | 1 |
| 06/26/2025 | 09/05/2025 | 71.75 | 1 |
| 01/08/2025 | 02/24/2025 | 50.25 | 1 |
| 05/06/2024 | 05/08/2024 | 25.00 | 1 |
| 04/17/2024 | 04/17/2024 | 2.25 | 1 |
| 12/12/2023 | 12/14/2023 | 39.50 | 1 |
| 12/07/2023 | 12/07/2023 | 13.50 | 1 |
| 05/16/2023 | 05/25/2023 | 69.75 | 1 |
| 03/20/2023 | 03/20/2023 | 10.75 | 1 |
| 12/27/2022 | 12/30/2022 | 28.50 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Mapleton Depot Plant have?
Mapleton Depot Plant has 205 MSHA violations on record, of which 11 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $38K.
What type of mine is Mapleton Depot Plant?
Mapleton Depot Plant is a Surface mine producing Nonmetal, located in Mapleton Depot, Huntingdon County, PA. It currently has 42 employees.
Has anyone been injured or killed at Mapleton Depot Plant?
According to MSHA records, Mapleton Depot Plant has 53 reported accident/injury records and 0 fatalities on file.
Who operates Mapleton Depot Plant?
Mapleton Depot Plant is operated by U.S. Silica Company, LLC and controlled by USS Holdings Inc. MSHA Mine ID: 3603122.