Decker Mine
Active
Surface
Coal
Operator: Decker Coal Company
Controller: Lighthouse Resources Inc
Location: Decker, MT 59025, Big Horn County, MT
Employees: 28
385
Violations
76
S&S Violations
91
Accidents
$305K
Penalties
Recent Violations
View all 385 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/20/2025 | 47.41(a) | Non-S&S | LowNegligence | $151 |
| 05/05/2025 | 77.502 | Non-S&S | LowNegligence | $151 |
| 05/05/2025 | 77.1607(p) | Non-S&S | ModNegligence | $151 |
| 03/19/2025 | 77.502-2 | Non-S&S | LowNegligence | $151 |
| 03/19/2025 | 77.502-2 | Non-S&S | ModNegligence | $151 |
| 03/17/2025 | 77.502 | S&S | ModNegligence | $818 |
| 03/17/2025 | 77.1103(d) | Non-S&S | LowNegligence | $151 |
| 03/17/2025 | 77.502 | Non-S&S | ModNegligence | $151 |
| 09/24/2024 | 45.4(b) | Non-S&S | ModNegligence | $147 |
| 09/24/2024 | 48.29(b) | Non-S&S | HighNegligence | $147 |
| 09/24/2024 | 48.29(a) | Non-S&S | HighNegligence | $147 |
| 09/17/2024 | 77.1707(a) | Non-S&S | LowNegligence | $147 |
| 09/17/2024 | 77.208(b) | Non-S&S | ModNegligence | $147 |
| 09/17/2024 | 77.210(a) | Non-S&S | LowNegligence | $147 |
| 03/07/2024 | 77.516 | Non-S&S | LowNegligence | $147 |
| 03/06/2024 | 77.502 | Non-S&S | ModNegligence | $147 |
| 03/06/2024 | 77.502 | Non-S&S | LowNegligence | $147 |
| 03/06/2024 | 77.502 | Non-S&S | ModNegligence | $147 |
| 08/03/2023 | 77.502-2 | Non-S&S | ModNegligence | $143 |
| 01/11/2023 | 77.502 | Non-S&S | ModNegligence | $143 |
Accidents & Injuries
View all 91 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 02/02/2026 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 9d restricted |
| 06/28/2023 | HANDLING OF MATERIALS | PERM TOT OR PERM PRTL DISABLTY | None |
| 06/15/2021 | FIRE | ACCIDENT ONLY | None |
| 06/14/2021 | FIRE | ACCIDENT ONLY | None |
| 09/05/2020 | ELECTRICAL | ACCIDENT ONLY | None |
| 12/18/2019 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/25/2019 | FIRE | ACCIDENT ONLY | None |
| 07/25/2018 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 03/12/2018 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/23/2017 | ELECTRICAL | ACCIDENT ONLY | None |
Inspections
View all 124 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 03/04/2026 | 0.00 | 0 | |
| 10/15/2025 | 10/22/2025 | 71.00 | 2 |
| 05/05/2025 | 05/07/2025 | 32.75 | 1 |
| 03/17/2025 | 03/26/2025 | 56.00 | 2 |
| 09/16/2024 | 09/26/2024 | 50.50 | 1 |
| 05/22/2024 | 05/22/2024 | 3.25 | 1 |
| 03/01/2024 | 03/22/2024 | 71.75 | 2 |
| 08/01/2023 | 08/18/2023 | 31.25 | 1 |
| 05/17/2023 | 05/17/2023 | 2.75 | 1 |
| 01/09/2023 | 02/08/2023 | 32.25 | 1 |
Mine Details
MSHA Mine ID2400839
Mine TypeSurface
StatusActive
CommodityCoal
SIC DescriptionCoal (Bituminous)
Employees28
Days/Week7.0
Hours/Shift12.0
Coordinates45.0377780, -106.8311110
Nearest TownDecker, MT 59025
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Frequently Asked Questions
How many MSHA violations does Decker Mine have?
Decker Mine has 385 MSHA violations on record, of which 76 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $305K.
What type of mine is Decker Mine?
Decker Mine is a Surface mine producing Coal, located in Decker, MT 59025, Big Horn County, MT. It currently has 28 employees.
Has anyone been injured or killed at Decker Mine?
According to MSHA records, Decker Mine has 91 reported accident/injury records and 0 fatalities on file.
Who operates Decker Mine?
Decker Mine is operated by Decker Coal Company and controlled by Lighthouse Resources Inc. MSHA Mine ID: 2400839.