Data / Mines / Wyoming / Tolsa Mines
Tolsa Mines, Natrona County, Wyoming: 0 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Tolsa Mines is a temporarily idled bentonite surface mine in Natrona County, Wyoming, operated by Tolsa Wyoming Bentonite Corp. with 1 employee on MSHA's record (mine ID 4801660). Since January 1, 2022 MSHA inspectors issued 0 citations and orders there with $0 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Tolsa Mines (MSHA mine ID 4801660) in Natrona County, Wyoming: each new citation and each accident report. $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.
- MSHA mine ID
- 4801660
- Status
- Temporarily Idled since December 8, 2021
- Main commodity
- Bentonite
- Mine type
- Surface
- County
- Natrona County, Wyoming
- Nearest town
- Casper
- Operator
- Tolsa Wyoming Bentonite Corp.
- Employees
- 1
- MSHA field office
- Gillette WY Field Office
- Citations and orders since January 1, 2022
- 0
- Inspections
- 2
- Inspector hours on site
- 2
- Citations per inspection
- 0.00 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- September 25, 2025
Other open mines in Natrona County, Wyoming
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Tolsa Wyoming Bentonite Plant | Tolsa Wyoming Bentonite Corp. | Natrona County, WY | Bentonite | 8 | 85 |
| Mills Plant | Black Hills Bentonite-A Limited Liability Co | Natrona County, WY | Bentonite | 20 | 54 |
| Casper Plant | Black Hills Bentonite-A Limited Liability Co | Natrona County, WY | Bentonite | 12 | 30 |
| HT Plant | Black Hills Bentonite-A Limited Liability Co | Natrona County, WY | Bentonite | 10 | 18 |
| Crusher #7 | JTL Group, Inc. | Natrona County, WY | Construction sand and gravel | 2 | 16 |
| Fold & Go Screen | Mobile Concrete Inc | Natrona County, WY | Construction sand and gravel | 2 | 11 |
| Advanced Screenplant | 71 Construction | Natrona County, WY | Construction sand and gravel | 2 | 11 |
| Cedarapids Screen | Mobile Concrete Inc | Natrona County, WY | Construction sand and gravel | 2 | 7 |
| El Jay | Mobile Concrete Inc | Natrona County, WY | Construction sand and gravel | 3 | 6 |
| Crusher #4 | JTL Group, Inc. | Natrona County, WY | Construction sand and gravel | 3 | 5 |
| Jci K200-6203CC | Mobile Concrete Inc | Natrona County, WY | Construction sand and gravel | 3 | 5 |
| Screen #3 | Brutill Construction, Inc | Natrona County, WY | Construction sand and gravel | 3 | 4 |
| Oftedal Crusher #1 | E H Oftedal & Sons Inc | Natrona County, WY | Gypsum | 2 | 4 |
| Portable Screening Plant | Mobile Concrete Inc | Natrona County, WY | Construction sand and gravel | 3 | 1 |
| Casper Pit | JTL Group, Inc. | Natrona County, WY | Construction sand and gravel | 2 | 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.