Key Takeaway
GLENROCK MILL is a active surface mine producing Nonmetal, located in Glenrock, Converse County, WY. It has 90 violations on record (14 S&S) and $22K in proposed penalties. Operated by Black Hills Lignite A Limited Liability Co.
GLENROCK MILL
Operator: Black Hills Lignite A Limited Liability Co
Controller: Brad Knickel; Michael Farmar
Location: Glenrock, Converse County, WY
Employees: 6
Recent Violations
View all 90 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 07/24/2025 | 56.4101 | Non-S&S | LowNegligence | $151 |
| 12/20/2023 | 56.14205 | Non-S&S | ModNegligence | $147 |
| 08/09/2023 | 56.12028 | Non-S&S | ModNegligence | $143 |
| 08/09/2023 | 56.14205 | Non-S&S | ModNegligence | $143 |
| 12/08/2022 | 56.12004 | Non-S&S | ModNegligence | $143 |
| 12/07/2022 | 56.14107(a) | Non-S&S | ModNegligence | $143 |
| 12/07/2022 | 56.12018 | Non-S&S | ModNegligence | $143 |
| 03/29/2022 | 41.12 | Non-S&S | ModNegligence | $133 |
| 03/29/2022 | 56.12028 | Non-S&S | ModNegligence | $133 |
| 12/21/2021 | 56.14100(b) | Non-S&S | HighNegligence | $133 |
| 12/21/2021 | 56.14207 | Non-S&S | ModNegligence | $133 |
| 12/21/2021 | 56.4201(a)(2) | Non-S&S | ModNegligence | $133 |
| 05/17/2021 | 48.31(a) | Non-S&S | ModNegligence | $139 |
| 05/04/2021 | 56.14107(a) | Non-S&S | ModNegligence | $125 |
| 05/04/2021 | 56.7002 | Non-S&S | HighNegligence | $125 |
| 05/04/2021 | 56.12019 | Non-S&S | HighNegligence | $125 |
| 05/04/2021 | 56.14100(b) | Non-S&S | HighNegligence | $125 |
| 05/04/2021 | 56.5001(a)/56.5005 | S&S | ModNegligence | $172 |
| 04/07/2020 | 56.4331 | Non-S&S | HighNegligence | $275 |
| 04/07/2020 | 45.4(b) | Non-S&S | ModNegligence | $123 |
Accidents & Injuries
View all 26 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 05/06/2019 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 10/26/2014 | FIRE | ACCIDENT ONLY | None |
| 12/21/2011 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 19d lost |
| 08/24/2011 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 2d lost |
| 08/10/2011 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | 2d lost |
| 08/04/2011 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 08/23/2010 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/21/2009 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 3d restricted |
| 03/09/2009 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 1d lost |
| 10/13/2008 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 96d lost |
Inspections
View all 76 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 07/24/2025 | 07/24/2025 | 9.50 | 1 |
| 01/13/2025 | 01/14/2025 | 12.50 | 1 |
| 09/12/2024 | 09/14/2024 | 31.50 | 1 |
| 12/20/2023 | 12/21/2023 | 9.50 | 1 |
| 08/08/2023 | 08/09/2023 | 16.50 | 1 |
| 12/06/2022 | 12/10/2022 | 29.50 | 1 |
| 03/28/2022 | 03/29/2022 | 15.25 | 1 |
| 12/21/2021 | 12/21/2021 | 8.00 | 1 |
| 06/28/2021 | 06/29/2021 | 21.00 | 1 |
| 05/16/2021 | 05/17/2021 | 8.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does GLENROCK MILL have?
GLENROCK MILL has 90 MSHA violations on record, of which 14 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $22K.
What type of mine is GLENROCK MILL?
GLENROCK MILL is a Surface mine producing Nonmetal, located in Glenrock, Converse County, WY. It currently has 6 employees.
Has anyone been injured or killed at GLENROCK MILL?
According to MSHA records, GLENROCK MILL has 26 reported accident/injury records and 0 fatalities on file.
Who operates GLENROCK MILL?
GLENROCK MILL is operated by Black Hills Lignite A Limited Liability Co and controlled by Brad Knickel; Michael Farmar. MSHA Mine ID: 4801475.