Mining Incidents

Canyon Fuel Company LLC: 4 recorded fatalities operator

Controlled by Wolverine Fuels LLC
MSHA operator ID: P23684

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Fatalities
4
Total incidents
636
Mines on record
6
Years on record
1997–2026
Compliance record
MSHA citations since 2000
11,146
citations
1,993
significant & substantial
$7,694,955
proposed penalties
$6,280,109
paid to date
82% of proposed penalties paid to date, a $1,414,846 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
2,257
inspections on record
188,436
inspection hours
5.9
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.
11,146 citations across 188,436 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$7.7M
proposed penalties
$6.4M
current assessed
$6.3M
paid to date
$135K
outstanding
10,881 assessments are final orders; 151 contested dockets.
Of $2.8M in penalties contested before the Commission, $1.5M was upheld in final decisions.
As of the most recent assessment on 2026-06-17.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
18.1%
significant & substantial
6.1%
high negligence or reckless
18.3%
reasonably likely or greater
10.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.1% none, 6.3% low, 87.4% moderate, 6.1% high, 0.1% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Injury rate, 2025
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
1.66
total case rate
0.94
days-away rate
0.000
fatality rate
Below average. The US coal mining average was 3.19 and the all-US-mining average was 1.97 cases per 100 workers.
Year total case rate days-away fatal
2026 0.95 0.63 0.000
2025 1.66 0.94 0.000
2024 0.79 0.45 0.000
2023 0.94 0.67 0.000
2022 2.64 1.11 0.000
2021 2.31 1.28 0.000
2020 2.26 1.81 0.000
2019 3.34 1.67 0.000
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Respirable coal dust
Respirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.

Last sampled: 2026-08-19
97%
within 1.5 mg/m3
32,773
samples
153
over MSHA ECV
The excessive concentration value (ECV) is MSHA's own per-sample enforcement threshold, which builds in measurement uncertainty; a sample over its ECV can trigger a citation. The count covers only samples MSHA assigned an ECV.
8,152 samples taken by MSHA inspectors, 24,621 by the operator.
Most-sampled occupations
  • CONTINUOUS MINER OPERATOR9,135
  • ROOF BOLTER (TWIN HEAD) (RETURN SIDE)6,087
  • LONGWALL OPERATOR (TAILGATE SIDE)3,348

Silica (quartz)

Last sampled: 2026-08-07
4.4
silica avg (%)
1,853
samples
40.8
silica max (%)
Most-sampled occupations
  • CONTINUOUS MINER OPERATOR543
  • ROOF BOLTER (TWIN HEAD) (RETURN SIDE)334
  • LONGWALL OPERATOR (TAILGATE SIDE)251

Noise
The share counts noise samples whose measured dose exceeded the 90 dBA permissible exposure limit. It describes the sampled workplace, not what reached the miner's ear: hearing conservation programs and the hearing protection worn during the shift are recorded separately and are not reflected here.

Last sampled: 2026-08-17
6%
over PEL
2,416
samples
Most-sampled occupations
  • UTILITY MAN201
  • MECHANIC192
  • CONTINUOUS MINER OPERATOR182
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
When citations were contested
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
280 citations taken to the federal commission · 3% of citations on record
  • Settled 270 · 96%
  • Stood as issued 5 · 2%
  • Vacated or withdrawn 1 · 0%
  • Still open 4 · 1%
75%
S&S designation survived the contest
Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 205 decided S&S contests · industry: 79%
47%
Penalty reduction in decided contests
$2.7M proposed, $1.4M after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2026-03-19. Vacated and withdrawn citations are removed from the file this view attributes through, so that outcome is slightly undercounted here.
Contested penalties
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this operator contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
WEST 2024-0184 Settlement Paez 2025 $290K → $232K
WEST 2024-0199 Settlement Simonton 2024 $170K → $22K
WEST 2025-0052 Settlement Paez 2025 $88K → $70K
WEST 2024-0108 Settlement Paez 2025 $86K → $68K
WEST 2008-505 Settlement Manning 2009 $77K → $19K
WEST 2008-687 Settlement Manning 2009 $76K → $14K
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.

Top causes

Incident timeline

2026
4
2025
25
2024
13
2023
14
2022
30
2021
22
2020
39
2019
39
2018
25
2017
18
2016
11
2015
13
2014
7
2013
8
2012
10
2011
22
2010
9
2009
18
2008
27
2007
31
2006
30
2005
8
2004
15 (1f)
2003
34
2002
20
2001
27
2000
27 (2f)
1999
25
1998
28
1997
37 (1f)

Mines on record

Fatalities under this operator

4 recorded
January 3, 2004 UT · Coal longwall operator, chock operator, shear operator, plow operator Fatality · MACHINERY
Canyon Fuel Company LLC · Struck by... (Not Elsewhere Classified)

VICTIM WAS HELPING MOVE AN IRON-BOUND SHIELD ON THE 3LPE LONGWALL FACE. CHAIN SLINGS WERE CONFIGURED TO ATTACH THE IRON BOUND SHIELD TO THE CONVEYER. THE VICTIM GOT ONTO THE IRON-BOUND SHIELD AND ATTEMPTED TO OPERATE A FUNCTION. AS PRESSUREWAS APPLIED, A HOOK ON THE CHAIN ASSEMBLY FAILED, AND THE CHAIN SLING ASSEMBLY HIT THE VICTIM. MASSIVE HEAD TRAUMA AND FRACTURED NECK.

April 10, 2000 UT · Coal shuttle car operator, mantrip operator, ramcar operator, rail runner, buggy operator Fatality · POWERED HAULAGE
Canyon Fuel Company LLC · Caught in, under or between a moving and a stationary object

THE OFF-STANDARD CAR OPERATOR IN THE 7 LEFT SECTION WAS FOUND FATALLY INJURED, PINNED BETWEEN THE CAR CANOPY AND THE RIB. THE CAR WAS STOPPED AT THE FEEDER BREAKER FOR THE SECTION. AN INVESTIG ATION IS UNDERWAY TO DETERMINE FURTHER INFORMATION.

March 23, 2000 UT · Coal electrician, lineman Fatality · OTHER
Canyon Fuel Company LLC · Drowning

INDIVIDUAL WAS FOUND DEAD IN SUMP.

May 20, 1997 UT · Coal utility man, errand boy, service truck operator Fatality · POWERED HAULAGE
Canyon Fuel Company Llc · Caught in, under or between (Not Elsewhere Classified)

VICTIM WAS DRIVING A WAGNER DIESEL POWERED SCOOP OUT OF THE MINE WHEN FOR SOME UNKNOWN REASON, THE SCOOP TRAVELED BACK DOWN THE SLOPE AND THE CANOPY STRUCK AN "I" BEAM ON A OVERCAST WHICH CAUS ED THE CANOPY TO DEFORM, STRIKING THE VICTIM, INFLICTING FATAL INJUIES.

For insurers, brokers, and safety consultants

Where Canyon Fuel Company LLC stands on silica, penalties, and injury rate

MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.

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