Sierra Silica Resources Metal/Non-Metal
Sierra Silica Resources has $62K in proposed MSHA penalties and $0 outstanding across 6 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 2014
154
citations
26
significant & substantial
$61,995
proposed penalties
$47,099
paid to date
76% of proposed penalties paid to date, a $14,896 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2014
50
inspections on record
771
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: 771 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Sierra Silica Resources has $62K in proposed MSHA penalties and $0 outstanding across 6 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.$62K
proposed penalties
$47K
current assessed
$47K
paid to date
$0
outstanding
132 assessments are final orders; 6 contested dockets.
As of the most recent assessment on 2025-10-22.
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 | 11,246 | 3 | 0 | 266.8 |
| 2025 Q3 | 11,649 | 0 | 0 | 0.0 |
| 2025 Q2 | 14,530 | 5 | 0 | 344.1 |
| 2025 Q1 | 8,602 | 0 | 0 | 0.0 |
| 2024 Q4 | 11,427 | 1 | 0 | 87.5 |
| 2024 Q3 | 13,084 | 2 | 0 | 152.9 |
| 2024 Q2 | 14,282 | 0 | 0 | 0.0 |
| 2024 Q1 | 7,724 | 0 | 0 | 0.0 |
Show 40 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 11,360 | 12 | 3 | 1056.3 |
| 2023 Q3 | 9,145 | 8 | 3 | 874.8 |
| 2023 Q2 | 9,845 | 0 | 0 | 0.0 |
| 2023 Q1 | 4,803 | 7 | 1 | 1457.4 |
| 2022 Q4 | 6,990 | 0 | 0 | 0.0 |
| 2022 Q3 | 9,285 | 4 | 0 | 430.8 |
| 2022 Q2 | 8,145 | 0 | 0 | 0.0 |
| 2022 Q1 | 5,882 | 0 | 0 | 0.0 |
| 2021 Q4 | 6,338 | 5 | 0 | 788.9 |
| 2021 Q3 | 9,102 | 0 | 0 | 0.0 |
| 2021 Q2 | 7,904 | 12 | 2 | 1518.2 |
| 2021 Q1 | 6,007 | 1 | 0 | 166.5 |
| 2020 Q4 | 7,979 | 0 | 0 | 0.0 |
| 2020 Q3 | 8,824 | 0 | 0 | 0.0 |
| 2020 Q2 | 5,972 | 3 | 1 | 502.3 |
| 2020 Q1 | 6,509 | 8 | 2 | 1229.1 |
| 2019 Q4 | 6,441 | 1 | 0 | 155.3 |
| 2019 Q3 | 8,436 | 3 | 0 | 355.6 |
| 2019 Q2 | 7,845 | 0 | 0 | 0.0 |
| 2019 Q1 | 6,570 | 1 | 0 | 152.2 |
| 2018 Q4 | 13,129 | 0 | 0 | 0.0 |
| 2018 Q3 | 17,830 | 5 | 1 | 280.4 |
| 2018 Q2 | 11,903 | 0 | 0 | 0.0 |
| 2018 Q1 | 11,625 | 2 | 0 | 172.0 |
| 2017 Q4 | 10,641 | 0 | 0 | 0.0 |
| 2017 Q3 | 12,433 | 0 | 0 | 0.0 |
| 2017 Q2 | 10,178 | 5 | 1 | 491.3 |
| 2017 Q1 | 11,042 | 9 | 0 | 815.1 |
| 2016 Q4 | 9,346 | 0 | 0 | 0.0 |
| 2016 Q3 | 13,153 | 3 | 1 | 228.1 |
| 2016 Q2 | 14,173 | 0 | 0 | 0.0 |
| 2016 Q1 | 10,392 | 2 | 0 | 192.5 |
| 2015 Q4 | 13,990 | 0 | 0 | 0.0 |
| 2015 Q3 | 13,970 | 2 | 0 | 143.2 |
| 2015 Q2 | 18,108 | 4 | 1 | 220.9 |
| 2015 Q1 | 13,227 | 0 | 0 | 0.0 |
| 2014 Q4 | 16,717 | 7 | 0 | 418.7 |
| 2014 Q3 | 17,002 | 7 | 4 | 411.7 |
| 2014 Q2 | 21,782 | 2 | 0 | 91.8 |
| 2014 Q1 | 14,102 | 19 | 3 | 1347.3 |
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 Sierra Silica Resources
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.