Missoula Crusher #427 has $4K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at Missoula Crusher #427.
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.
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.
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.
3citations 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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.
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.
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 quartersHide 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, 1995MT · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
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.
Related mines
Other mines operated by Missoula County Dept of Public Works