Data / Mines / Colorado / Moffat County
Mines in Moffat County, Colorado: 11 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 11 open mines in Moffat County, Colorado, run by 9 operators and employing 245 people. Since January 1, 2022 its inspectors issued 145 citations and orders there with $38,052 in proposed penalties, and operators reported 30 injury or illness cases. The operators with the most open mines are 3B Enterprises LLC; Trapper Mining Inc; Anson Excavating. Data from MSHA, November 6, 2026.
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- Open mines
- 11
- Operators
- 9
- Employees
- 245
- Intermittent
- 6
- Active
- 3
- NonProducing
- 1
- Temporarily Idled
- 1
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 145
- Significant and substantial
- 18 (12.4%)
- Closure orders
- 2
- High negligence or reckless
- 20
- Proposed penalties
- $38,052
- Amount paid so far
- $36,995
- Inspections
- 120
- Inspector hours on site
- 2,852
- Citations per inspection
- 1.21 (all mines 2.30)
- Accident reports
- 34
- Injury and illness cases
- 30
- Fatalities
- 0
- Latest MSHA record
- October 28, 2026
Operators with the most open mines in Moffat County, Colorado
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| 3B Enterprises LLC | 3 | 5 | 9 | $2,805 | 0 |
| Trapper Mining Inc | 1 | 66 | 48 | $13,095 | 10 |
| Anson Excavating | 1 | 8 | 35 | $13,417 | 1 |
| Kiewit Mining Group Inc | 1 | 150 | 17 | $2,563 | 16 |
| C&B Sand and Gravel | 1 | 4 | 12 | $2,154 | 0 |
| Oldcastle SW Group, Inc. | 1 | 4 | 12 | $2,069 | 3 |
| Bower Brothers Const, Inc. | 1 | 3 | 4 | $588 | 0 |
| Moffat County Road Department | 1 | 3 | 3 | $417 | 0 |
Operators with the most citations in Moffat County, Colorado
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Trapper Mining Inc | 1 | 66 | 48 | $13,095 | 10 |
| Anson Excavating | 1 | 8 | 35 | $13,417 | 1 |
| Kiewit Mining Group Inc | 1 | 150 | 17 | $2,563 | 16 |
| C&B Sand and Gravel | 1 | 4 | 12 | $2,154 | 0 |
| Oldcastle SW Group, Inc. | 1 | 4 | 12 | $2,069 | 3 |
| 3B Enterprises LLC | 3 | 5 | 9 | $2,805 | 0 |
| Bower Brothers Const, Inc. | 1 | 3 | 4 | $588 | 0 |
| Moffat County Road Department | 1 | 3 | 3 | $417 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Trapper Mine | Trapper Mining Inc | Moffat County, CO | Coal (bituminous) | 66 | 48 |
| Moffat Limestone | Anson Excavating | Moffat County, CO | Crushed, broken limestone | 8 | 35 |
| Colowyo Mine | Kiewit Mining Group Inc | Moffat County, CO | Coal (bituminous) | 150 | 17 |
| Portable Crusher #1 | Oldcastle SW Group, Inc. | Moffat County, CO | Construction sand and gravel | 4 | 12 |
| Sheehan Pit | C&B Sand and Gravel | Moffat County, CO | Dimension basalt | 4 | 12 |
| Metso | Bower Brothers Const, Inc. | Moffat County, CO | Construction sand and gravel | 3 | 4 |
| 3B Wash Plant | 3B Enterprises LLC | Moffat County, CO | Construction sand and gravel | 1 | 4 |
| Crusher 1 | 3B Enterprises LLC | Moffat County, CO | Construction sand and gravel | 4 | 3 |
| Moffat County El Jay | Moffat County Road Department | Moffat County, CO | Construction sand and gravel | 3 | 3 |
| Crusher 2 | 3B Enterprises LLC | Moffat County, CO | Construction sand and gravel | 0 | 2 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 7 | 63.6% |
| Coal (bituminous) | 2 | 18.2% |
| Dimension basalt | 1 | 9.1% |
| Crushed, broken limestone | 1 | 9.1% |
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 |
|---|---|---|---|---|
| 2022 | 21 | 1 | $8,417 | 5 |
| 2023 | 40 | 5 | $9,008 | 10 |
| 2024 | 33 | 6 | $7,074 | 5 |
| 2025 | 27 | 2 | $5,665 | 6 |
| 2026 | 24 | 4 | $7,888 | 4 |
Standards cited most at mines in Moffat County, Colorado
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 77.404 | Surface coal mines, safety | 13 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 8 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 8 |
| 30 CFR 77.1104 | Surface coal mines, safety | 7 |
| 30 CFR 77.1607 | Surface coal mines, safety | 7 |
| 30 CFR 77.1110 | Surface coal mines, safety | 6 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 5 |
| 30 CFR 71.206 | Surface coal mines, health | 4 |
| 30 CFR 77.502 | Surface coal mines, safety | 4 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 4 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 4 |
| 30 CFR 77.410 | Surface coal mines, safety | 3 |
| 30 CFR 77.1606 | Surface coal mines, safety | 3 |
| 30 CFR 77.205 | Surface coal mines, safety | 3 |
Injury and illness cases at mines in Moffat County, Colorado
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 17 |
| No lost time, or an occupational illness | 13 |
What the accident reports at mines in Moffat County, Colorado describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 13 |
| Disorders (repeated trauma) | 4 |
| Fire | 4 |
| Handtools (nonpowered) | 4 |
| Slip or fall of person | 3 |
| All other occupational illnesses | 2 |
| Machinery | 2 |
| Other | 1 |
| Nonpowered haulage | 1 |
Equipment named in accident reports at mines in Moffat County, Colorado
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 5 |
| Ore haulage trucks - off highway trucks | 3 |
| Front-end loader | 2 |
| Trucks | 2 |
| Shovel | 1 |
| Bulldozer | 1 |
| Forklift | 1 |
| Crusher | 1 |
| Machine | 1 |
| Ore haulage trucks - on highway trucks | 1 |
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.