Mining Incidents

Koch Pit Crusher: 58 MSHA citations Metal/Non-Metal

Koch Construction, Inc · Surface
Controlled by Aaron M Koch
Daniel, Sublette County, WY  ·  Intermittent
MSHA Mine ID: 4801678

Koch Pit Crusher has $7K in proposed MSHA penalties and $0 outstanding across 1 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 2005
58
citations
13
significant & substantial
$7,469
proposed penalties
$7,469
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2005
41
inspections on record
388
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: 388 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Koch Pit Crusher has $7K in proposed MSHA penalties and $0 outstanding across 1 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
$7K
paid to date
$0
outstanding
45 assessments are final orders; 1 contested dockets.
Of $100 in penalties contested before the Commission, $0 was upheld in final decisions.
As of the most recent assessment on 2025-06-05.
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.
28.9%
significant & substantial
24.4%
high negligence or reckless
28.9%
reasonably likely or greater
48.9%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 6.7% low, 68.9% moderate, 24.4% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, 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.
1 citations taken to the federal commission · 2% of citations on record
  • Vacated or withdrawn 1 · 100%
100%
Penalty reduction in decided contests
$100 proposed, $0 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 2013-06-10.
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 mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
WEST 2013-885M Withdrawal Manning 2014 $100 → $0
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
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.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2017-06-21, 9 years ago
5
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg5
Show the individual readings (5)
Date Contaminant Concentration Limit Conc / limit Occupation
2017-06-21 Respirable dust, <.1mg 0 Crusher Oper/Worker
2014-08-13 Respirable dust, <.1mg 0 Mechanic
2011-06-29 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-06-29 Respirable dust, <.1mg 0 Front-end Loader Operator
2006-08-16 Respirable dust, <.1mg 0 Crusher Oper/Worker
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Koch Construction, Inc 2005 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 0
2025 1
2024 0
2023 2
2022 1
2021 1
2020 1
2019 2
2018 2
2017 2
2016 1
2015 2
2014 2
2013 2
2012 2
2011 2
2010 2
2009 2
2008 2
2007 3
2006 1
2005 2
Source: MSHA quarterly employment and production, updated weekly.

Koch Pit Crusher sits in Sublette County, Wyoming, where the Census mining category is 12.6% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Sublette County, Wyoming · Population 8,806
12.6%
Mining share of county employment
$82,791
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 0 0 0
2026 Q1 0 0 0
2025 Q4 0 0 0
2025 Q3 0 0 0
2025 Q2 441 1 0 2267.6
2025 Q1 0 0 0
2024 Q4 0 0 0
2024 Q3 0 0 0
Show 75 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 0 0 0
2024 Q1 0 0 0
2023 Q4 756 0 0 0.0
2023 Q3 65 3 0 46153.8
2023 Q2 282 3 1 10638.3
2023 Q1 0 0 0
2022 Q4 135 0 0 0.0
2022 Q3 227 0 0 0.0
2022 Q2 0 0 0
2022 Q1 0 0 0
2021 Q4 45 0 0 0.0
2021 Q3 187 25 7 133689.8
2021 Q2 0 0 0
2021 Q1 0 0 0
2020 Q4 0 1 0
2020 Q3 487 0 0 0.0
2020 Q2 0 0 0
2020 Q1 0 0 0
2019 Q4 53 0 0 0.0
2019 Q3 506 0 0 0.0
2019 Q2 157 0 0 0.0
2018 Q4 317 0 0 0.0
2018 Q3 642 0 0 0.0
2018 Q2 491 0 0 0.0
2018 Q1 0 0 0
2017 Q4 400 0 0 0.0
2017 Q3 415 1 0 2409.6
2017 Q2 648 0 0 0.0
2017 Q1 0 0 0
2016 Q4 147 0 0 0.0
2016 Q3 82 0 0 0.0
2016 Q2 104 0 0 0.0
2016 Q1 0 0 0
2015 Q4 255 0 0 0.0
2015 Q3 1,559 1 0 641.4
2015 Q2 155 0 0 0.0
2015 Q1 0 0 0
2014 Q4 858 0 0 0.0
2014 Q3 987 3 1 3039.5
2014 Q2 68 2 0 29411.8
2014 Q1 0 0 0
2013 Q4 602 0 0 0.0
2013 Q3 772 0 0 0.0
2013 Q2 735 0 0 0.0
2013 Q1 0 0 0
2012 Q4 596 0 0 0.0
2012 Q3 1,022 0 0 0.0
2012 Q2 974 2 0 2053.4
2012 Q1 0 0 0
2011 Q4 1,120 0 0 0.0
2011 Q3 854 2 0 2341.9
2011 Q2 1,205 4 1 3319.5
2011 Q1 82 2 0 24390.2
2010 Q4 836 0 0 0.0
2010 Q3 1,353 1 1 739.1
2010 Q2 1,770 0 0 0.0
2010 Q1 732 0 0 0.0
2009 Q4 918 0 0 0.0
2009 Q3 1,351 1 0 740.2
2009 Q2 766 0 0 0.0
2009 Q1 0 0 0
2008 Q4 79 0 0 0.0
2008 Q3 1,040 0 0 0.0
2008 Q2 871 0 0 0.0
2008 Q1 0 0 0
2007 Q4 645 0 0 0.0
2007 Q3 1,230 1 0 813.0
2007 Q2 1,057 0 0 0.0
2007 Q1 683 0 0 0.0
2006 Q4 686 0 0 0.0
2006 Q2 848 0 0 0.0
2006 Q1 66 0 0 0.0
2005 Q4 317 5 2 15772.9
2005 Q3 1,176 0 0 0.0
2005 Q2 126 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.