Data / Mines / Wyoming / Tensleep Mine
Tensleep Mine, Washakie County, Wyoming: 30 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Tensleep Mine is an active bentonite surface mine in Washakie County, Wyoming, operated by Black Hills Bentonite-A Limited Liability Co with 8 employees on MSHA's record (mine ID 4800954). Since January 1, 2022 MSHA inspectors issued 30 citations and orders there with $12,632 in proposed penalties, and 4 accident reports were filed there, with 4 injury or illness cases.
The request: Watch Tensleep Mine (MSHA mine ID 4800954) in Washakie County, Wyoming: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4800954
- Status
- Active since October 13, 1998
- Main commodity
- Bentonite
- Mine type
- Surface
- County
- Washakie County, Wyoming
- Nearest town
- Tensleep
- Operator
- Black Hills Bentonite-A Limited Liability Co
- Employees
- 8
- MSHA field office
- Gillette WY Field Office
- Citations and orders since January 1, 2022
- 30
- Significant and substantial
- 10 (33.3%)
- Closure orders
- 0
- High negligence or reckless
- 2
- Proposed penalties
- $12,632
- Amount paid so far
- $11,039
- Inspections
- 14
- Inspector hours on site
- 110
- Citations per inspection
- 2.14 (all mines 2.30)
- Accident reports
- 4
- Injury and illness cases
- 4
- Fatalities
- 0
- Latest MSHA record
- June 23, 2026
- Citations issued to contractors here
- 4 ($952 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 | 7 | 4 | $5,659 | 2 |
| 2023 | 10 | 2 | $3,578 | 1 |
| 2024 | 10 | 4 | $2,710 | 0 |
| 2025 | 2 | 0 | $534 | 0 |
| 2026 | 1 | 0 | $151 | 1 |
Standards cited most at Tensleep 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 56.4201 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 3 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 3 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 41.12 | Notice of legal identity | 1 |
| 30 CFR 47.41 | Hazard communication | 1 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14131 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9101 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Tensleep Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 4 |
What the accident reports at Tensleep Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Powered haulage | 3 |
| Striking or bumping | 1 |
Equipment named in accident reports at Tensleep Mine
| Equipment | Reports |
|---|---|
| Scraper loader | 2 |
| Ore haulage trucks - off highway trucks | 1 |
Other open mines in Washakie County, Wyoming
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Worland Plant | Black Hills Bentonite-A Limited Liability Co | Washakie County, WY | Bentonite | 11 | 22 |
| Worland Wash Plant | Big Horn Redi-Mix Inc | Washakie County, WY | Construction sand and gravel | 2 | 8 |
| Farmer Crusher | Big Horn Redi-Mix Inc | Washakie County, WY | Construction sand and gravel | 3 | 6 |
| Crushing Plant | Nowood Construction Inc | Washakie County, WY | Construction sand and gravel | 4 | 3 |
| South Flat Pit | P E Grosch Construction Inc | Washakie County, WY | Construction sand and gravel | 3 | 2 |
| Step Rock Pit | Tensleep Sand and Gravel, LLC | Washakie County, WY | Construction sand and gravel | 1 | 1 |
| Crusher 3 | 383 Construction LLC | Washakie County, WY | Construction sand and gravel | 1 | 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.