Data / Mines / Wyoming / Oshoto Mine
Oshoto Mine, Weston County, Wyoming: 11 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Oshoto Mine is an intermittent bentonite surface mine in Weston County, Wyoming, operated by Black Hills Bentonite-A Limited Liability Co with 3 employees on MSHA's record (mine ID 4801376). Since January 1, 2022 MSHA inspectors issued 11 citations and orders there with $2,026 in proposed penalties, and 1 accident report was filed there, with 1 injury or illness case.
The request: Watch Oshoto Mine (MSHA mine ID 4801376) in Weston County, Wyoming: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4801376
- Status
- Intermittent since May 13, 2021
- Main commodity
- Bentonite
- Mine type
- Surface
- County
- Weston County, Wyoming
- Nearest town
- Upton
- Operator
- Black Hills Bentonite-A Limited Liability Co
- Employees
- 3
- MSHA field office
- Gillette WY Field Office
- Citations and orders since January 1, 2022
- 11
- Significant and substantial
- 1 (9.1%)
- Closure orders
- 0
- High negligence or reckless
- 2
- Proposed penalties
- $2,026
- Amount paid so far
- $2,026
- Inspections
- 12
- Inspector hours on site
- 77
- Citations per inspection
- 0.92 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- October 22, 2025
- Citations issued to contractors here
- 11 ($1,579 proposed)
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 | 0 | 0 | $0 | 1 |
| 2023 | 5 | 0 | $715 | 0 |
| 2024 | 6 | 1 | $1,311 | 0 |
Standards cited most at Oshoto 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 46.12 | Training at sand, gravel and surface stone mines | 5 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 47.41 | Hazard communication | 1 |
| 30 CFR 56.4402 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9315 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Oshoto Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| No lost time, or an occupational illness | 1 |
What the accident reports at Oshoto Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Powered haulage | 1 |
Equipment named in accident reports at Oshoto Mine
| Equipment | Reports |
|---|---|
| Scraper loader | 1 |
Other open mines in Weston County, Wyoming
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Thornton Plant | Black Hills Bentonite-A Limited Liability Co | Weston County, WY | Bentonite | 1 | 26 |
| Habeck Gravel Pit | Timberline Aggregates, LLC. | Weston County, WY | Construction sand and gravel | 6 | 14 |
| Wagner Scoria Pit | Wagner Ranch Services, LLC | Weston County, WY | Construction sand and gravel | 3 | 1 |
| Metso Nordberg HP400 Cone Crusher | Wyoming Earthmoving Corporation | Weston County, WY | Agate | 6 | 0 |
| Superbase Screen | Wyoming Earthmoving Corporation | Weston County, WY | Agate | 6 | 0 |
| Fisher Industries Plant 21 | Fisher Sand & Gravel Company | Weston County, WY | Construction sand and gravel | 0 | 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.