Data / Mines / Mountain Construction Company
Mountain Construction Company: 21 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Mountain Construction Company (MSHA operator ID 0051428) operates 1 open mine with 13 employees in Wyoming, mostly construction sand and gravel. Since January 1, 2022 MSHA inspectors issued it 21 citations and orders with $21,925 in proposed penalties, and it reported 1 injury or illness case. Data from MSHA, November 6, 2026.
The request: Watch Mountain Construction Company (MSHA operator ID 0051428): each new citation, each accident report and each new mine. $10 of work on sign-up, no card.
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- MSHA operator ID
- 0051428
- Open mines
- 1
- Employees at open mines
- 13
- States
- Wyoming
- Citations and orders since January 1, 2022
- 21
- Significant and substantial
- 7 (33.3%)
- Closure orders
- 0
- High negligence or reckless
- 3
- Proposed penalties
- $21,925
- Amount paid so far
- $21,925
- Inspections
- 7
- Inspector hours on site
- 58
- Citations per inspection
- 3.00 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- January 7, 2026
Open mines of Mountain Construction Company
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Portable #1 | Mountain Construction Company | Big Horn County, WY | Construction sand and gravel | 13 | 21 |
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 | 7 | 5 | $18,795 | 1 |
| 2023 | 3 | 1 | $1,230 | 0 |
| 2024 | 2 | 0 | $294 | 0 |
| 2025 | 6 | 0 | $906 | 0 |
| 2026 | 3 | 1 | $700 | 0 |
Standards cited most at Mountain Construction Company
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 56.14107 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12025 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14211 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11027 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14110 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 1 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 1 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Mountain Construction Company
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at Mountain Construction Company describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 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.