Key Takeaway
Tolsa Mines is a temporarily idled surface mine producing Nonmetal, located in Casper, Natrona County, WY. It has 31 violations on record (14 S&S) and $8K in proposed penalties. Operated by Tolsa Wyoming Bentonite Corp..
Tolsa Mines
Operator: Tolsa Wyoming Bentonite Corp.
Controller: Tolsa S A
Location: Casper, Natrona County, WY
Employees: 1
Recent Violations
View all 31 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/28/2021 | 41.12 | Non-S&S | ModNegligence | $125 |
| 09/22/2021 | 56.9300(b) | S&S | ModNegligence | $302 |
| 09/22/2021 | 56.18020 | S&S | ModNegligence | $302 |
| 09/22/2021 | 56.18020 | S&S | ModNegligence | $302 |
| 09/22/2021 | 56.9300(b) | S&S | ModNegligence | $302 |
| 08/30/2021 | 56.14130(c) | Non-S&S | ModNegligence | $125 |
| 08/30/2021 | 56.4201(a)(2) | Non-S&S | ModNegligence | $125 |
| 03/31/2020 | 56.1000 | Non-S&S | HighNegligence | $123 |
| 11/02/2016 | 56.14100(a) | S&S | ModNegligence | $276 |
| 11/02/2016 | 56.14103(c)(1) | S&S | ModNegligence | $114 |
| 09/14/2016 | 56.14207 | Non-S&S | HighNegligence | $356 |
| 05/01/2015 | 50.30(a) | Non-S&S | HighNegligence | $100 |
| 03/24/2015 | 56.14207 | Non-S&S | ModNegligence | $100 |
| 03/24/2015 | 56.4100(b) | Non-S&S | ModNegligence | $100 |
| 07/17/2013 | 56.14100(d) | Non-S&S | ModNegligence | $100 |
| 07/15/2013 | Non-S&S | $0 | ||
| 07/15/2013 | Non-S&S | $0 | ||
| 07/14/2013 | 56.20008(a) | Non-S&S | HighNegligence | $100 |
| 10/30/2012 | 46.6(a) | S&S | LowNegligence | $971 |
| 10/30/2012 | 46.5(a) | S&S | LowNegligence | $971 |
Inspections
View all 31 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 09/22/2025 | 09/25/2025 | 10.50 | 1 |
| 03/20/2025 | 03/24/2025 | 12.00 | 1 |
| 10/27/2021 | 10/29/2021 | 20.00 | 1 |
| 09/21/2021 | 09/23/2021 | 23.00 | 1 |
| 08/30/2021 | 08/31/2021 | 17.25 | 1 |
| 03/16/2021 | 03/17/2021 | 3.00 | 1 |
| 03/31/2020 | 03/31/2020 | 8.00 | 1 |
| 03/25/2019 | 03/28/2019 | 10.50 | 1 |
| 03/21/2018 | 03/22/2018 | 13.50 | 1 |
| 04/03/2017 | 04/06/2017 | 24.00 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Tolsa Mines have?
Tolsa Mines has 31 MSHA violations on record, of which 14 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $8K.
What type of mine is Tolsa Mines?
Tolsa Mines is a Surface mine producing Nonmetal, located in Casper, Natrona County, WY. It currently has 1 employees.
Has anyone been injured or killed at Tolsa Mines?
According to MSHA records, Tolsa Mines has 0 reported accident/injury records and 0 fatalities on file.
Who operates Tolsa Mines?
Tolsa Mines is operated by Tolsa Wyoming Bentonite Corp. and controlled by Tolsa S A. MSHA Mine ID: 4801660.