Key Takeaway
SLIPPERY ROCK is a active surface mine producing Stone, located in Slippery Rock, Butler County, PA. It has 151 violations on record (23 S&S) and $20K in proposed penalties. Operated by Allegheny Mineral Corp.
SLIPPERY ROCK
Operator: Allegheny Mineral Corp
Controller: Snyder Associated Companies Inc
Location: Slippery Rock, Butler County, PA
Employees: 22
Recent Violations
View all 151 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/23/2025 | 47.44(b) | Non-S&S | LowNegligence | $151 |
| 02/26/2025 | 47.44(b) | Non-S&S | LowNegligence | $151 |
| 06/27/2024 | 56.14107(a) | Non-S&S | LowNegligence | $147 |
| 02/20/2024 | 56.4201(a)(2) | Non-S&S | ModNegligence | $147 |
| 01/30/2023 | 56.20003(a) | Non-S&S | LowNegligence | $143 |
| 01/30/2023 | 56.11003 | Non-S&S | ModNegligence | $143 |
| 04/26/2022 | 56.20003(a) | S&S | LowNegligence | $133 |
| 04/26/2022 | 56.14107(a) | Non-S&S | ModNegligence | $133 |
| 04/25/2022 | 56.9300(a) | Non-S&S | LowNegligence | $133 |
| 04/25/2022 | 56.14100(b) | Non-S&S | ModNegligence | $133 |
| 01/20/2022 | 56.20003(a) | Non-S&S | ModNegligence | $133 |
| 01/20/2022 | 56.9100(a) | Non-S&S | LowNegligence | $133 |
| 08/10/2021 | 56.14132(b)(1)(i) | Non-S&S | LowNegligence | $125 |
| 01/12/2021 | 56.4201(a)(2) | Non-S&S | LowNegligence | $125 |
| 08/11/2020 | 56.12032 | Non-S&S | LowNegligence | $123 |
| 08/11/2020 | 56.14207 | Non-S&S | ModNegligence | $123 |
| 08/11/2020 | 56.12008 | Non-S&S | LowNegligence | $123 |
| 08/10/2020 | 56.12032 | Non-S&S | LowNegligence | $123 |
| 06/26/2019 | 56.20003(a) | Non-S&S | ModNegligence | $121 |
| 06/25/2019 | 56.14130(c) | Non-S&S | LowNegligence | $121 |
Accidents & Injuries
View all 22 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 11/06/2025 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | None |
| 02/03/2022 | DISORDERS (REPEATED TRAUMA) | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 02/03/2022 | DISORDERS (REPEATED TRAUMA) | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 12/15/2020 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/05/2019 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 108d lost |
| 06/22/2016 | HANDTOOLS (NONPOWERED) | DAYS AWAY FROM WORK ONLY | 52d lost |
| 07/21/2014 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 94d lost |
| 06/12/2013 | STRIKING OR BUMPING | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/15/2012 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 52d lost |
| 07/19/2010 | STRIKING OR BUMPING | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 72 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 10/21/2025 | 10/23/2025 | 36.00 | 1 |
| 06/23/2025 | 06/24/2025 | 21.75 | 1 |
| 02/26/2025 | 02/26/2025 | 12.00 | 1 |
| 06/25/2024 | 06/28/2024 | 25.25 | 1 |
| 02/20/2024 | 02/21/2024 | 25.00 | 1 |
| 05/16/2023 | 05/18/2023 | 17.25 | 1 |
| 01/30/2023 | 02/08/2023 | 30.25 | 2 |
| 04/25/2022 | 04/27/2022 | 22.75 | 1 |
| 01/27/2022 | 01/27/2022 | 2.25 | 1 |
| 01/20/2022 | 01/21/2022 | 12.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does SLIPPERY ROCK have?
SLIPPERY ROCK has 151 MSHA violations on record, of which 23 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $20K.
What type of mine is SLIPPERY ROCK?
SLIPPERY ROCK is a Surface mine producing Stone, located in Slippery Rock, Butler County, PA. It currently has 22 employees.
Has anyone been injured or killed at SLIPPERY ROCK?
According to MSHA records, SLIPPERY ROCK has 22 reported accident/injury records and 0 fatalities on file.
Who operates SLIPPERY ROCK?
SLIPPERY ROCK is operated by Allegheny Mineral Corp and controlled by Snyder Associated Companies Inc. MSHA Mine ID: 3606146.