Data / Mines / Colorado / Montrose County
Mines in Montrose 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 Montrose County, Colorado, run by 7 operators and employing 41 people. Since January 1, 2022 its inspectors issued 85 citations and orders there with $21,274 in proposed penalties, and operators reported 3 injury or illness cases. The operators with the most open mines are Western Gravel Inc; Rocky Mountain Aggregate & Construction LLC; Oldcastle SW Group, Inc.. Data from MSHA, November 6, 2026.
The request: Get every open mine in Montrose County, Colorado from MSHA with its operator, employees, and the operator's website, headquarters and size. $10 of work on sign-up, no card.
SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.
- Open mines
- 11
- Operators
- 7
- Employees
- 41
- Active
- 5
- Temporarily Idled
- 3
- Intermittent
- 3
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 85
- Significant and substantial
- 27 (31.8%)
- Closure orders
- 2
- High negligence or reckless
- 7
- Proposed penalties
- $21,274
- Amount paid so far
- $21,274
- Inspections
- 69
- Inspector hours on site
- 333
- Citations per inspection
- 1.23 (all mines 2.30)
- Accident reports
- 3
- Injury and illness cases
- 3
- Fatalities
- 0
- Latest MSHA record
- November 5, 2026
Operators with the most open mines in Montrose 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 |
|---|---|---|---|---|---|
| Western Gravel Inc | 3 | 11 | 29 | $8,387 | 1 |
| Rocky Mountain Aggregate & Construction LLC | 2 | 11 | 43 | $10,793 | 0 |
| Oldcastle SW Group, Inc. | 2 | 6 | 6 | $1,081 | 2 |
| Asteroid Explorations LLC | 1 | 2 | 0 | $0 | 0 |
| Disa Technologies, Inc. | 1 | 3 | 0 | $0 | 0 |
Operators with the most citations in Montrose 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 |
|---|---|---|---|---|---|
| Rocky Mountain Aggregate & Construction LLC | 2 | 11 | 43 | $10,793 | 0 |
| Western Gravel Inc | 3 | 11 | 29 | $8,387 | 1 |
| Oldcastle SW Group, Inc. | 2 | 6 | 6 | $1,081 | 2 |
| Asteroid Explorations LLC | 1 | 2 | 0 | $0 | 0 |
| Disa Technologies, Inc. | 1 | 3 | 0 | $0 | 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 |
|---|---|---|---|---|---|
| Portable Crusher# 1 | Rocky Mountain Aggregate & Construction LLC | Montrose County, CO | Construction sand and gravel | 5 | 23 |
| Western Gravel Inc. | Western Gravel Inc | Montrose County, CO | Construction sand and gravel | 6 | 22 |
| Portable Crusher# 2 | Rocky Mountain Aggregate & Construction LLC | Montrose County, CO | Construction sand and gravel | 6 | 20 |
| Portable 2 | Western Gravel Inc | Montrose County, CO | Construction sand and gravel | 4 | 6 |
| CR7 | Oldcastle SW Group, Inc. | Montrose County, CO | Construction sand and gravel | 3 | 3 |
| CR8 | Oldcastle SW Group, Inc. | Montrose County, CO | Construction sand and gravel | 3 | 3 |
| Screen Plant | Western Gravel Inc | Montrose County, CO | Construction sand and gravel | 1 | 1 |
| Mobile Hpsa Remediation Equipment | Disa Technologies, Inc. | Montrose County, CO | Uranium ore | 3 | 0 |
| Kichelmann 1 | Asteroid Explorations LLC | Montrose County, CO | Gold ore | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 7 | 63.6% |
| Gold ore | 3 | 27.3% |
| Uranium ore | 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 | 17 | 7 | $6,855 | 0 |
| 2023 | 38 | 16 | $10,060 | 1 |
| 2024 | 13 | 2 | $2,052 | 1 |
| 2025 | 7 | 1 | $1,099 | 1 |
| 2026 | 10 | 1 | $1,208 | 0 |
Standards cited most at mines in Montrose 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 56.12004 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 5 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 4 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14116 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.16003 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at mines in Montrose County, Colorado
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| No lost time, or an occupational illness | 3 |
What the accident reports at mines in Montrose County, Colorado describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 2 |
| Slip or fall of person | 1 |
Equipment named in accident reports at mines in Montrose County, Colorado
| Equipment | Reports |
|---|---|
| Welding machine | 1 |
| Hand tools (powered) | 1 |
| Screen | 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.