Liscom Hill Quarry Metal/Non-Metal
R Brown Construction
· Surface
Controlled by
Roger D Brown
Blue Lake,
Humboldt County,
CA
·
Intermittent
MSHA Mine ID: 0405948
Liscom Hill Quarry has $860 in proposed MSHA penalties and $0 outstanding across 0 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 2021
6
citations
1
significant & substantial
$860
proposed penalties
$860
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2021
9
inspections on record
130
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: 130 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Liscom Hill Quarry has $860 in proposed MSHA penalties and $0 outstanding across 0 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.$860
proposed penalties
$860
current assessed
$860
paid to date
$0
outstanding
6 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-02-05.
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 | 2,357 | 0 | 0 | 0.0 |
| 2025 Q3 | 1,954 | 0 | 0 | 0.0 |
| 2025 Q2 | 748 | 0 | 0 | 0.0 |
| 2025 Q1 | 437 | 1 | 0 | 2288.3 |
| 2024 Q4 | 234 | 0 | 0 | 0.0 |
| 2024 Q3 | 775 | 0 | 0 | 0.0 |
| 2024 Q2 | 1,256 | 0 | 0 | 0.0 |
| 2024 Q1 | 567 | 0 | 0 | 0.0 |
Show 13 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 1,354 | 0 | 0 | 0.0 |
| 2023 Q3 | 1,451 | 2 | 1 | 1378.4 |
| 2023 Q2 | 710 | 1 | 0 | 1408.5 |
| 2023 Q1 | 471 | 0 | 0 | 0.0 |
| 2022 Q4 | 964 | 0 | 0 | 0.0 |
| 2022 Q2 | 28 | 0 | 0 | 0.0 |
| 2022 Q1 | 137 | 0 | 0 | 0.0 |
| 2021 Q4 | 747 | 0 | 0 | 0.0 |
| 2021 Q3 | 1,360 | 0 | 0 | 0.0 |
| 2021 Q1 | 1,207 | 2 | 0 | 1657.0 |
| 2020 Q4 | 1,855 | 0 | 0 | 0.0 |
| 2020 Q3 | 2,583 | 0 | 0 | 0.0 |
| 2020 Q2 | 540 | 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 Liscom Hill Quarry
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.