Wilsey Ranch Quarry Metal/Non-Metal
Kibesillah Rock Company
· Surface
Controlled by
Ronelle McMahon
KIBESILLAH, CA,
Mendocino County,
CA
·
Intermittent
MSHA Mine ID: 0405353
Wilsey Ranch Quarry has $7K in proposed MSHA penalties and $151 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 2006
40
citations
9
significant & substantial
$6,594
proposed penalties
$6,443
paid to date
98% of proposed penalties paid to date, a $151 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
37
inspections on record
452
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: 452 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Wilsey Ranch Quarry has $7K in proposed MSHA penalties and $151 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.$7K
proposed penalties
$7K
current assessed
$6K
paid to date
$151
outstanding
39 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-24.
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 | 210 | 0 | 0 | 0.0 |
| 2025 Q3 | 402 | 0 | 0 | 0.0 |
| 2025 Q2 | 540 | 0 | 0 | 0.0 |
| 2025 Q1 | 336 | 0 | 0 | 0.0 |
| 2024 Q4 | 256 | 0 | 0 | 0.0 |
| 2024 Q3 | 523 | 0 | 0 | 0.0 |
| 2024 Q2 | 295 | 13 | 3 | 44067.8 |
| 2024 Q1 | 82 | 0 | 0 | 0.0 |
Show 93 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 227 | 0 | 0 | 0.0 |
| 2023 Q3 | 325 | 5 | 0 | 15384.6 |
| 2023 Q2 | 555 | 0 | 0 | 0.0 |
| 2023 Q1 | 361 | 0 | 0 | 0.0 |
| 2022 Q4 | 419 | 0 | 0 | 0.0 |
| 2022 Q3 | 733 | 1 | 0 | 1364.3 |
| 2022 Q2 | 538 | 0 | 0 | 0.0 |
| 2022 Q1 | 599 | 0 | 0 | 0.0 |
| 2021 Q4 | 219 | 0 | 0 | 0.0 |
| 2021 Q3 | 480 | 0 | 0 | 0.0 |
| 2021 Q2 | 669 | 0 | 0 | 0.0 |
| 2021 Q1 | 604 | 0 | 0 | 0.0 |
| 2020 Q4 | 471 | 0 | 0 | 0.0 |
| 2020 Q3 | 721 | 0 | 0 | 0.0 |
| 2020 Q2 | 308 | 0 | 0 | 0.0 |
| 2019 Q4 | 269 | 0 | 0 | 0.0 |
| 2019 Q3 | 289 | 0 | 0 | 0.0 |
| 2019 Q2 | 492 | 1 | 0 | 2032.5 |
| 2019 Q1 | 249 | 0 | 0 | 0.0 |
| 2018 Q4 | 437 | 0 | 0 | 0.0 |
| 2018 Q3 | 549 | 2 | 1 | 3643.0 |
| 2018 Q2 | 323 | 0 | 0 | 0.0 |
| 2018 Q1 | 500 | 0 | 0 | 0.0 |
| 2017 Q4 | 577 | 0 | 0 | 0.0 |
| 2017 Q3 | 450 | 0 | 0 | 0.0 |
| 2017 Q2 | 340 | 0 | 0 | 0.0 |
| 2017 Q1 | 269 | 3 | 3 | 11152.4 |
| 2016 Q4 | 476 | 0 | 0 | 0.0 |
| 2016 Q3 | 501 | 0 | 0 | 0.0 |
| 2016 Q2 | 191 | 1 | 0 | 5235.6 |
| 2016 Q1 | 190 | 0 | 0 | 0.0 |
| 2015 Q4 | 195 | 0 | 0 | 0.0 |
| 2015 Q3 | 231 | 0 | 0 | 0.0 |
| 2015 Q2 | 290 | 0 | 0 | 0.0 |
| 2015 Q1 | 190 | 0 | 0 | 0.0 |
| 2014 Q4 | 240 | 0 | 0 | 0.0 |
| 2014 Q3 | 278 | 0 | 0 | 0.0 |
| 2014 Q2 | 199 | 0 | 0 | 0.0 |
| 2014 Q1 | 467 | 0 | 0 | 0.0 |
| 2013 Q4 | 547 | 0 | 0 | 0.0 |
| 2013 Q3 | 402 | 0 | 0 | 0.0 |
| 2013 Q2 | 210 | 0 | 0 | 0.0 |
| 2013 Q1 | 52 | 0 | 0 | 0.0 |
| 2012 Q4 | 112 | 0 | 0 | 0.0 |
| 2012 Q2 | 242 | 7 | 0 | 28925.6 |
| 2012 Q1 | 270 | 0 | 0 | 0.0 |
| 2011 Q3 | 474 | 0 | 0 | 0.0 |
| 2011 Q2 | 485 | 0 | 0 | 0.0 |
| 2011 Q1 | 212 | 0 | 0 | 0.0 |
| 2010 Q4 | 240 | 0 | 0 | 0.0 |
| 2010 Q3 | 255 | 1 | 0 | 3921.6 |
| 2010 Q2 | 117 | 0 | 0 | 0.0 |
| 2010 Q1 | 79 | 0 | 0 | 0.0 |
| 2009 Q4 | 362 | 0 | 0 | 0.0 |
| 2009 Q3 | 349 | 0 | 0 | 0.0 |
| 2009 Q2 | 420 | 2 | 1 | 4761.9 |
| 2009 Q1 | 170 | 0 | 0 | 0.0 |
| 2008 Q4 | 176 | 0 | 0 | 0.0 |
| 2008 Q3 | 505 | 0 | 0 | 0.0 |
| 2008 Q2 | 480 | 0 | 0 | 0.0 |
| 2008 Q1 | 264 | 0 | 0 | 0.0 |
| 2007 Q4 | 210 | 0 | 0 | 0.0 |
| 2007 Q3 | 515 | 0 | 0 | 0.0 |
| 2007 Q2 | 580 | 1 | 0 | 1724.1 |
| 2007 Q1 | 540 | 0 | 0 | 0.0 |
| 2006 Q4 | 400 | 0 | 0 | 0.0 |
| 2006 Q3 | 469 | 0 | 0 | 0.0 |
| 2006 Q2 | 485 | 2 | 1 | 4123.7 |
| 2006 Q1 | 140 | 0 | 0 | 0.0 |
| 2005 Q4 | 220 | 0 | 0 | 0.0 |
| 2005 Q3 | 458 | 0 | 0 | 0.0 |
| 2005 Q2 | 200 | 0 | 0 | 0.0 |
| 2005 Q1 | 122 | 0 | 0 | 0.0 |
| 2004 Q4 | 252 | 0 | 0 | 0.0 |
| 2004 Q3 | 307 | 0 | 0 | 0.0 |
| 2004 Q2 | 196 | 0 | 0 | 0.0 |
| 2004 Q1 | 147 | 0 | 0 | 0.0 |
| 2003 Q4 | 211 | 0 | 0 | 0.0 |
| 2003 Q3 | 342 | 0 | 0 | 0.0 |
| 2003 Q2 | 216 | 0 | 0 | 0.0 |
| 2003 Q1 | 230 | 0 | 0 | 0.0 |
| 2002 Q4 | 329 | 0 | 0 | 0.0 |
| 2002 Q3 | 360 | 0 | 0 | 0.0 |
| 2002 Q2 | 158 | 0 | 0 | 0.0 |
| 2002 Q1 | 112 | 0 | 0 | 0.0 |
| 2001 Q4 | 110 | 0 | 0 | 0.0 |
| 2001 Q3 | 366 | 0 | 0 | 0.0 |
| 2001 Q2 | 174 | 0 | 0 | 0.0 |
| 2001 Q1 | 48 | 0 | 0 | 0.0 |
| 2000 Q4 | 297 | 0 | 0 | 0.0 |
| 2000 Q3 | 232 | 0 | 0 | 0.0 |
| 2000 Q2 | 487 | 0 | 0 | 0.0 |
| 2000 Q1 | 97 | 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 Wilsey Ranch 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.