Bonanza Opal Mines, Inc. Metal/Non-Metal
Bonanza Opal Mines, Inc.
· Surface
Controlled by
Klaus Althammer
Denio,
Humboldt County,
NV
·
Temporarily Idled
MSHA Mine ID: 2601427
Bonanza Opal Mines, Inc. has $251 in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2015
2
citations
0
significant & substantial
$251
proposed penalties
$251
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2015
11
inspections on record
73
inspection hours
n/a
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Rate withheld: 73 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Bonanza Opal Mines, Inc. has $251 in proposed MSHA penalties and $0 outstanding across 1 contested dockets.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$251
proposed penalties
$251
current assessed
$251
paid to date
$0
outstanding
2 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2025-07-09.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
Quarterly safety rates
ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 0 | 0 | 0 | |
| 2025 Q3 | 2,312 | 1 | 0 | 432.5 |
| 2025 Q2 | 1,549 | 0 | 0 | 0.0 |
| 2025 Q1 | 0 | 0 | 0 | |
| 2024 Q4 | 0 | 0 | 0 | |
| 2024 Q3 | 1,832 | 0 | 0 | 0.0 |
| 2024 Q2 | 1,324 | 0 | 0 | 0.0 |
| 2024 Q1 | 0 | 0 | 0 |
Show 26 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 0 | 0 | 0 | |
| 2023 Q3 | 2,153 | 0 | 0 | 0.0 |
| 2023 Q2 | 1,687 | 0 | 0 | 0.0 |
| 2023 Q1 | 0 | 0 | 0 | |
| 2022 Q4 | 0 | 0 | 0 | |
| 2022 Q3 | 2,351 | 0 | 0 | 0.0 |
| 2022 Q2 | 1,445 | 0 | 0 | 0.0 |
| 2022 Q1 | 0 | 0 | 0 | |
| 2021 Q4 | 0 | 0 | 0 | |
| 2021 Q3 | 1,921 | 0 | 0 | 0.0 |
| 2021 Q2 | 1,808 | 0 | 0 | 0.0 |
| 2021 Q1 | 0 | 0 | 0 | |
| 2020 Q4 | 0 | 0 | 0 | |
| 2020 Q3 | 1,714 | 0 | 0 | 0.0 |
| 2020 Q2 | 14 | 0 | 0 | 0.0 |
| 2020 Q1 | 0 | 0 | 0 | |
| 2019 Q4 | 0 | 0 | 0 | |
| 2019 Q3 | 1,932 | 0 | 0 | 0.0 |
| 2019 Q2 | 1,069 | 0 | 0 | 0.0 |
| 2019 Q1 | 0 | 0 | 0 | |
| 2017 Q3 | 2,065 | 0 | 0 | 0.0 |
| 2017 Q2 | 1,038 | 0 | 0 | 0.0 |
| 2016 Q3 | 2,863 | 0 | 0 | 0.0 |
| 2016 Q2 | 848 | 0 | 0 | 0.0 |
| 2015 Q3 | 1,869 | 1 | 0 | 535.0 |
| 2015 Q2 | 1,173 | 0 | 0 | 0.0 |
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.
For insurers, brokers, and safety consultants
The full compliance file on Bonanza Opal Mines, Inc.
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.