Mining Incidents

Bear Butte Quarry Metal/Non-Metal

Kernen Construction · Surface
Miranda, Humboldt County, CA  ·  Active
MSHA Mine ID: 0405687

Bear Butte Quarry has $9K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Bear Butte Quarry.

Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2006
64
citations
12
significant & substantial
$8,870
proposed penalties
$8,870
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2006
43
inspections on record
541
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: 541 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Bear Butte Quarry has $9K 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.
$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$0
outstanding
62 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-12-02.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 1,506 1 0 664.0
2025 Q3 1,661 2 1 1204.1
2025 Q2 1,413 0 0 0.0
2025 Q1 1,258 0 0 0.0
2024 Q4 2,770 0 0 0.0
2024 Q3 2,394 2 0 835.4
2024 Q2 1,348 0 0 0.0
2024 Q1 1,310 0 0 0.0
Show 68 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 1,344 0 0 0.0
2023 Q3 2,192 3 2 1368.6
2023 Q2 2,515 0 0 0.0
2023 Q1 1,261 1 0 793.0
2022 Q4 808 0 0 0.0
2022 Q3 593 0 0 0.0
2022 Q2 895 1 0 1117.3
2022 Q1 641 3 0 4680.2
2021 Q4 602 0 0 0.0
2021 Q3 598 3 2 5016.7
2021 Q2 1,130 0 0 0.0
2020 Q4 360 0 0 0.0
2020 Q3 360 0 0 0.0
2020 Q2 480 0 0 0.0
2020 Q1 480 0 0 0.0
2019 Q4 480 0 0 0.0
2019 Q3 400 0 0 0.0
2019 Q2 480 0 0 0.0
2019 Q1 480 5 1 10416.7
2018 Q4 480 0 0 0.0
2018 Q3 480 5 2 10416.7
2018 Q2 480 0 0 0.0
2018 Q1 480 1 0 2083.3
2017 Q4 360 0 0 0.0
2017 Q3 800 0 0 0.0
2017 Q2 780 0 0 0.0
2017 Q1 480 0 0 0.0
2016 Q4 480 0 0 0.0
2016 Q3 960 0 0 0.0
2016 Q2 320 1 0 3125.0
2016 Q1 0 0 0
2015 Q3 0 0 0
2015 Q2 360 7 0 19444.4
2015 Q1 513 0 0 0.0
2014 Q4 37 0 0 0.0
2014 Q3 56 0 0 0.0
2014 Q2 168 0 0 0.0
2014 Q1 174 0 0 0.0
2013 Q4 523 0 0 0.0
2013 Q3 615 0 0 0.0
2013 Q2 271 0 0 0.0
2012 Q4 464 4 1 8620.7
2012 Q3 513 2 0 3898.6
2012 Q2 676 0 0 0.0
2012 Q1 616 0 0 0.0
2011 Q4 932 0 0 0.0
2011 Q3 1,113 0 0 0.0
2011 Q2 1,167 3 0 2570.7
2011 Q1 890 0 0 0.0
2010 Q4 1,001 0 0 0.0
2010 Q3 484 2 0 4132.2
2010 Q2 1,305 0 0 0.0
2010 Q1 941 0 0 0.0
2009 Q4 962 0 0 0.0
2009 Q3 1,176 2 0 1700.7
2009 Q2 530 0 0 0.0
2009 Q1 405 0 0 0.0
2008 Q4 92 0 0 0.0
2008 Q3 379 3 1 7915.6
2008 Q2 1,039 0 0 0.0
2008 Q1 582 0 0 0.0
2007 Q4 1,488 0 0 0.0
2007 Q3 821 0 0 0.0
2007 Q2 864 0 0 0.0
2007 Q1 1,100 0 0 0.0
2006 Q4 1,719 3 0 1745.2
2006 Q3 1,897 9 2 4744.3
2006 Q2 638 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 Bear Butte 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.