Key Takeaway
Bonanza Opal Mines, Inc. is a temporarily idled surface mine producing Nonmetal, located in Denio, Humboldt County, NV. It has 2 violations on record (0 S&S) and $251 in proposed penalties. Operated by Bonanza Opal Mines, Inc..
Bonanza Opal Mines, Inc.
Operator: Bonanza Opal Mines, Inc.
Controller: Klaus Althammer
Location: Denio, Humboldt County, NV
Employees: 2
Recent Violations
View all 2 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 07/09/2025 | 46.9(b)(2) | Non-S&S | LowNegligence | $151 |
| 08/11/2015 | 46.9(c)(3) | Non-S&S | ModNegligence | $100 |
Inspections
View all 11 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 07/08/2025 | 07/22/2025 | 19.75 | 1 |
| 07/12/2024 | 07/12/2024 | 8.00 | 1 |
| 08/07/2023 | 09/11/2023 | 16.00 | 1 |
| 07/06/2022 | 07/07/2022 | 1.25 | 1 |
| 09/09/2021 | 09/09/2021 | 1.75 | 1 |
| 09/01/2020 | 09/03/2020 | 6.50 | 1 |
| 06/19/2019 | 06/19/2019 | 1.50 | 1 |
| 09/11/2018 | 09/12/2018 | 3.00 | 1 |
| 06/08/2017 | 06/09/2017 | 2.50 | 1 |
| 06/20/2016 | 06/21/2016 | 3.00 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Bonanza Opal Mines, Inc. have?
Bonanza Opal Mines, Inc. has 2 MSHA violations on record, of which 0 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $251.
What type of mine is Bonanza Opal Mines, Inc.?
Bonanza Opal Mines, Inc. is a Surface mine producing Nonmetal, located in Denio, Humboldt County, NV. It currently has 2 employees.
Has anyone been injured or killed at Bonanza Opal Mines, Inc.?
According to MSHA records, Bonanza Opal Mines, Inc. has 0 reported accident/injury records and 0 fatalities on file.
Who operates Bonanza Opal Mines, Inc.?
Bonanza Opal Mines, Inc. is operated by Bonanza Opal Mines, Inc. and controlled by Klaus Althammer. MSHA Mine ID: 2601427.