Data / Mines / Montana / Decker Mine
Decker Mine, Big Horn County, Montana: 24 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Decker Mine is an active coal (bituminous) surface mine in Big Horn County, Montana, operated by Decker Coal Company with 28 employees on MSHA's record (mine ID 2400839). Since January 1, 2022 MSHA inspectors issued 24 citations and orders there with $4,235 in proposed penalties, and 2 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Decker Mine (MSHA mine ID 2400839) in Big Horn County, Montana: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 2400839
- Status
- Active since September 1, 1972
- Main commodity
- Coal (bituminous)
- Mine type
- Surface
- County
- Big Horn County, Montana
- Nearest town
- Decker, MT 59025
- Operator
- Decker Coal Company
- Parent company
- Lighthouse Resources Inc
- Employees
- 28
- MSHA field office
- Gillette WY Field Office
- Citations and orders since January 1, 2022
- 24
- Significant and substantial
- 1 (4.2%)
- Closure orders
- 0
- High negligence or reckless
- 2
- Proposed penalties
- $4,235
- Amount paid so far
- $4,228
- Inspections
- 13
- Inspector hours on site
- 255
- Citations per inspection
- 1.85 (all mines 2.30)
- Accident reports
- 2
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- September 16, 2026
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2023 | 2 | 0 | $286 | 1 |
| 2024 | 10 | 0 | $1,470 | 0 |
| 2025 | 8 | 1 | $1,875 | 0 |
| 2026 | 4 | 0 | $604 | 1 |
Standards cited most at Decker Mine
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 77.502 | Surface coal mines, safety | 7 |
| 30 CFR 77.502-2 | Surface coal mines, safety | 3 |
| 30 CFR 77.1110 | Surface coal mines, safety | 2 |
| 30 CFR 77.1103 | Surface coal mines, safety | 2 |
| 30 CFR 48.29 | Training of miners | 2 |
| 30 CFR 77.516 | Surface coal mines, safety | 1 |
| 30 CFR 77.704-8 | Surface coal mines, safety | 1 |
| 30 CFR 77.1607 | Surface coal mines, safety | 1 |
| 30 CFR 77.1707 | Surface coal mines, safety | 1 |
| 30 CFR 77.208 | Surface coal mines, safety | 1 |
| 30 CFR 77.210 | Surface coal mines, safety | 1 |
| 30 CFR 45.4 | Part 45 | 1 |
| 30 CFR 47.41 | Hazard communication | 1 |
Injury and illness cases at Decker Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Permanent disability | 1 |
| Days away from work or restricted activity | 1 |
What the accident reports at Decker Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 2 |
Other open mines in Big Horn County, Montana
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Absaloka Mine | Westmoreland Absaloka Mining LLC | Big Horn County, MT | Coal (bituminous) | 14 | 96 |
| Spring Creek Mine | Navajo Transitional Energy Company, LLC | Big Horn County, MT | Coal (bituminous) | 268 | 56 |
| Portable Crusher #1 | Big Horn County | Big Horn County, MT | Construction sand and gravel | 2 | 3 |
| Wolf Mountain Coal-Spring Creek | Wolf Mountain Coal, Inc. | Big Horn County, MT | Coal (bituminous) | 7 | 1 |
| Yci McCLOSKEY C3 | Yochum Contracting Inc | Big Horn County, MT | Construction sand and gravel | 3 | 0 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.