Mining Incidents

Missoula Crusher #427: 38 MSHA citations Metal/Non-Metal

Controlled by Missoula County-MT
Missoula, Missoula County, MT  ·  Intermittent
MSHA Mine ID: 2401893

Missoula Crusher #427 has $4K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
1995
Latest incident
Aug 1995
Compliance record
MSHA citations since 2000
38
citations
9
significant & substantial
$4,173
proposed penalties
$4,173
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
46
inspections on record
443
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: 443 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Missoula Crusher #427 has $4K in proposed MSHA penalties and $0 outstanding across 2 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
38 assessments are final orders; 2 contested dockets.
Of $355 in penalties contested before the Commission, $355 was upheld in final decisions.
As of the most recent assessment on 2024-08-19.
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.
23.7%
significant & substantial
0.0%
high negligence or reckless
23.7%
reasonably likely or greater
50.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 18.4% low, 81.6% moderate, 0.0% 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.
3 citations taken to the federal commission · 8% of citations on record
  • Settled 3 · 100%
0%
Penalty reduction in decided contests
$300 proposed, $300 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 2009-03-31.
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 2009-678M Settlement Lesnick 2010 $300 → $300
WEST20010124M Settlement Schroeder 2001 $55 → $55
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: 2019-07-17, 7 years ago
25%
of limit-tested samples over the exposure limit
8
samples
4
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz51 over
  • Respirable dust, <.1mg3
Show the individual readings (8)
Date Contaminant Concentration Limit Conc / limit Occupation
2003-08-21 Quartz, respirable, >1% Qtz 1.36 0.49 2.78 Bulldozer Operator
2019-07-17 Quartz, respirable, >1% Qtz 0.12 Bulldozer Operator
2019-07-17 Respirable dust, <.1mg 0 Crusher Oper/Worker
2012-06-21 Respirable dust, <.1mg 0 Crusher Oper/Worker
2012-06-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2004-06-23 Quartz, respirable, >1% Qtz 0.26 0.67 0.39 Crusher Oper/Worker
2004-06-23 Quartz, respirable, >1% Qtz 0.23 0.49 0.47 Bulldozer Operator
2003-08-21 Quartz, respirable, >1% Qtz 0.29 1 0.29 Bulldozer Operator

Area samples (mill and shop air)

Last sampled: 2014-04-30, 12 years ago
2
samples
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Area sampled
2014-04-30 Respirable dust, <.1mg 0 Crusher Operators Bo
2014-04-30 Respirable dust, <.1mg 0 Dozer Operators Cab
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. Missoula County Dept of Public Works 1989 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2025 3
2024 2
2023 3
2022 2
2021 3
2020 3
2019 3
2018 2
2017 2
2016 3
2015 3
2014 3
2013 3
2012 3
2011 3
2010 3
2009 4
2008 4
2007 2
2006 2
2005 3
2004 5
2003 4
2002 3
2001 3
2000 3
Source: MSHA quarterly employment and production, updated weekly.

Missoula Crusher #427 sits in Missoula County, Montana, where the Census mining category is 0.2% 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.
Missoula County, Montana · Population 119,639
0.2%
Mining share of county employment
$71,246
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 1 0 0 0.0
2026 Q1 1 0 0 0.0
2025 Q4 1 0 0 0.0
2025 Q3 61 0 0 0.0
2025 Q2 746 0 0 0.0
2025 Q1 17 0 0 0.0
2024 Q4 1 0 0 0.0
2024 Q3 1 1 0 1000000.0
Show 95 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 247 0 0 0.0
2024 Q1 293 1 0 3413.0
2023 Q4 537 0 0 0.0
2023 Q3 562 0 0 0.0
2023 Q2 467 0 0 0.0
2023 Q1 1 0 0 0.0
2022 Q4 1 0 0 0.0
2022 Q3 371 0 0 0.0
2022 Q2 1 0 0 0.0
2022 Q1 1 0 0 0.0
2021 Q4 211 0 0 0.0
2021 Q3 401 0 0 0.0
2021 Q2 277 0 0 0.0
2021 Q1 495 0 0 0.0
2020 Q4 41 1 0 24390.2
2020 Q3 228 0 0 0.0
2020 Q2 61 0 0 0.0
2020 Q1 285 1 0 3508.8
2019 Q4 177 0 0 0.0
2019 Q3 322 3 0 9316.8
2019 Q2 121 0 0 0.0
2019 Q1 1 0 0 0.0
2018 Q4 1 0 0 0.0
2018 Q3 457 1 0 2188.2
2018 Q2 1 0 0 0.0
2018 Q1 1 0 0 0.0
2017 Q4 1 0 0 0.0
2017 Q3 261 0 0 0.0
2017 Q2 697 1 0 1434.7
2017 Q1 1 0 0 0.0
2016 Q4 85 0 0 0.0
2016 Q3 385 0 0 0.0
2016 Q2 180 0 0 0.0
2016 Q1 419 2 0 4773.3
2015 Q4 80 0 0 0.0
2015 Q3 523 1 0 1912.0
2015 Q2 514 0 0 0.0
2015 Q1 17 0 0 0.0
2014 Q4 389 0 0 0.0
2014 Q3 654 0 0 0.0
2014 Q2 593 0 0 0.0
2014 Q1 1 0 0 0.0
2013 Q4 1 0 0 0.0
2013 Q3 61 0 0 0.0
2013 Q2 554 3 1 5415.2
2013 Q1 196 0 0 0.0
2012 Q4 299 0 0 0.0
2012 Q3 905 0 0 0.0
2012 Q2 399 0 0 0.0
2012 Q1 655 2 1 3053.4
2011 Q4 44 0 0 0.0
2011 Q3 78 0 0 0.0
2011 Q2 488 0 0 0.0
2011 Q1 478 0 0 0.0
2010 Q4 64 1 1 15625.0
2010 Q3 104 0 0 0.0
2010 Q2 246 0 0 0.0
2010 Q1 423 0 0 0.0
2009 Q4 326 3 1 9202.5
2009 Q3 765 0 0 0.0
2009 Q2 614 0 0 0.0
2009 Q1 1,021 9 0 8814.9
2008 Q1 85 0 0 0.0
2007 Q4 18 0 0 0.0
2007 Q3 10 1 0 100000.0
2007 Q2 10 0 0 0.0
2007 Q1 10 0 0 0.0
2006 Q4 10 0 0 0.0
2006 Q3 40 0 0 0.0
2006 Q2 1 0 0 0.0
2006 Q1 1 0 0 0.0
2005 Q4 1 0 0 0.0
2005 Q3 1 0 0 0.0
2005 Q2 100 0 0 0.0
2005 Q1 1,019 0 0 0.0
2004 Q4 700 0 0 0.0
2004 Q3 674 0 0 0.0
2004 Q2 755 0 0 0.0
2004 Q1 482 0 0 0.0
2003 Q4 635 0 0 0.0
2003 Q3 294 3 3 10204.1
2003 Q2 949 0 0 0.0
2003 Q1 748 0 0 0.0
2002 Q4 506 0 0 0.0
2002 Q3 420 3 2 7142.9
2002 Q2 472 0 0 0.0
2002 Q1 214 0 0 0.0
2001 Q4 370 0 0 0.0
2001 Q3 938 0 0 0.0
2001 Q2 229 0 0 0.0
2001 Q1 482 0 0 0.0
2000 Q4 450 0 0 0.0
2000 Q3 143 0 0 0.0
2000 Q2 1 0 0 0.0
2000 Q1 519 1 0 1926.8
No fatalities recorded at this mine.

Reportable incidents

1 on file

1995 · 1 incident

August 31, 1995 MT · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Missoula County Dept of Public Works · Caught in, under or between a moving and a stationary object

SIDE PLATES FROM CRUSHER JAWS WERE BRING LOADED INTO LOAD BUCKET. OPERATOR PUT LOADER BUCKET ONE GROUND, WITH TEETH CURLED UP A BIT. INJURED PLACED L FOOT UNDER BUCKET. OPERATOR CURLED BUCKET DOWN TO LAY TEETH FLAT ON GROUND. INJURED PERSONS FOOT WAS CAUGHT UNDER BUCKET TOOTH.