Belle Ayr Mine
Active
Surface
Coal
Operator: Eagle Specialty Materials LLC
Controller: Petri E Koivula; David Michael Jamison
Location: Gillette, Campbell County, WY
Employees: 223
711
Violations
134
S&S Violations
192
Accidents
$349K
Penalties
Recent Violations
View all 711 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/20/2025 | 77.502 | Non-S&S | LowNegligence | $165 |
| 11/19/2025 | 77.502 | S&S | LowNegligence | $1,219 |
| 11/14/2025 | 77.410(c) | Non-S&S | LowNegligence | $165 |
| 11/14/2025 | 77.1605(b) | Non-S&S | LowNegligence | $165 |
| 11/14/2025 | 77.1104 | Non-S&S | ModNegligence | $818 |
| 11/12/2025 | 77.410(c) | Non-S&S | ModNegligence | $398 |
| 10/28/2025 | 77.1606(c) | Non-S&S | ModNegligence | $465 |
| 10/24/2025 | 77.1605(l) | S&S | LowNegligence | $3,184 |
| 10/24/2025 | 77.1605(b) | S&S | LowNegligence | $336 |
| 10/23/2025 | 77.1104 | Non-S&S | LowNegligence | $465 |
| 10/23/2025 | 77.604 | Non-S&S | LowNegligence | $193 |
| 10/23/2025 | 77.404(a) | S&S | LowNegligence | $0 |
| 10/23/2025 | 77.404(a) | S&S | LowNegligence | $4,383 |
| 10/22/2025 | 77.512 | Non-S&S | ModNegligence | $432 |
| 10/22/2025 | 77.502 | Non-S&S | ModNegligence | $432 |
| 10/20/2025 | 77.502-2 | Non-S&S | ModNegligence | $504 |
| 10/20/2025 | 77.502 | Non-S&S | ModNegligence | $504 |
| 06/05/2025 | 47.41(a) | Non-S&S | LowNegligence | $151 |
| 06/05/2025 | 77.904 | Non-S&S | ModNegligence | $245 |
| 06/05/2025 | 77.505 | Non-S&S | ModNegligence | $245 |
Accidents & Injuries
View all 192 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 08/26/2025 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/12/2025 | POWERED HAULAGE | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/26/2025 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | 35d lost |
| 04/30/2025 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 58d lost |
| 01/22/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 57d lost |
| 11/13/2024 | FIRE | DAYS AWAY FROM WORK ONLY | 91d lost |
| 06/25/2024 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 8d restricted |
| 04/28/2024 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/29/2024 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/08/2024 | STEPPING OR KNEELING ON OBJECT | DAYS AWAY FROM WORK ONLY | 32d lost |
Inspections
View all 141 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/04/2026 | 02/09/2026 | 6.25 | 2 |
| 10/16/2025 | 12/05/2025 | 202.25 | 5 |
| 05/19/2025 | 06/16/2025 | 177.75 | 6 |
| 03/05/2025 | 03/27/2025 | 149.00 | 8 |
| 09/24/2024 | 09/26/2024 | 19.50 | 1 |
| 08/07/2024 | 08/07/2024 | 3.00 | 1 |
| 07/29/2024 | 07/30/2024 | 0.75 | 1 |
| 05/09/2024 | 07/03/2024 | 136.25 | 3 |
| 02/19/2024 | 02/20/2024 | 12.00 | 1 |
| 11/16/2023 | 01/26/2024 | 163.75 | 5 |
Mine Details
MSHA Mine ID4800732
Mine TypeSurface
StatusActive
CommodityCoal
SIC DescriptionCoal (Bituminous)
Employees223
Days/Week7.0
Hours/Shift12.0
Coordinates44.1000000, -105.3830560
Nearest TownGillette
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Frequently Asked Questions
How many MSHA violations does Belle Ayr Mine have?
Belle Ayr Mine has 711 MSHA violations on record, of which 134 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $349K.
What type of mine is Belle Ayr Mine?
Belle Ayr Mine is a Surface mine producing Coal, located in Gillette, Campbell County, WY. It currently has 223 employees.
Has anyone been injured or killed at Belle Ayr Mine?
According to MSHA records, Belle Ayr Mine has 192 reported accident/injury records and 1 fatalities on file.
Who operates Belle Ayr Mine?
Belle Ayr Mine is operated by Eagle Specialty Materials LLC and controlled by Petri E Koivula; David Michael Jamison. MSHA Mine ID: 4800732.