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: 843 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
PORTABLE CRUSHER has $35K in proposed MSHA penalties and $2 outstanding across 3 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.
$35K
proposed penalties
$33K
current assessed
$33K
paid to date
$2
outstanding
160 assessments are final orders; 3 contested dockets.
Of $14K in penalties contested before the Commission, $13K was upheld in final decisions.
As of the most recent assessment on 2025-10-15.
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.
14citations taken to the federal commission · 9% of citations on record
Settled
13 · 93%
Stood as issued
1 · 7%
89%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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 9 decided S&S contests · industry: 79%
10%
Penalty reduction in decided contests
$14K proposed, $13K 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2018-04-03.
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: 2025-10-15
20%
of limit-tested samples over the exposure limit
21
samples
10
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz102 over
Respirable dust, <.1mg10
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (21)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2002-11-06
Quartz, respirable, >1% Qtz
0.78
0.38
2.05
Front-end Loader Operator
2000-10-11
Quartz, respirable, >1% Qtz
0.43
0.36
1.19
Cleanup Man
2025-10-15
Respirable dust, <.1mg
0
Laborer, Bullgang
2025-10-15
Respirable dust, <.1mg
0
Crusher Oper/Worker
2018-02-07
Respirable dust, <.1mg
0
Crusher Oper/Worker
2018-02-07
Unlisted Particulate, respirable, <1% Qtz
0.18
Front-end Loader Operator
2015-04-07
Quartz, respirable, >1% Qtz
0.28
1.12
0.25
Front-end Loader Operator
2015-04-07
Quartz, respirable, >1% Qtz
0.13
0.3
0.43
Cleanup Man
2015-04-07
Respirable dust, <.1mg
0
Crusher Oper/Worker
2010-09-22
Respirable dust, <.1mg
0
Laborer, Bullgang
2010-09-22
Respirable dust, <.1mg
0
Crusher Oper/Worker
2004-10-06
Respirable dust, <.1mg
0
Front-end Loader Operator
2004-10-06
Respirable dust, <.1mg
0
Cleanup Man
2004-10-06
Respirable dust, <.1mg
0
Crusher Oper/Worker
2002-11-06
Quartz, respirable, >1% Qtz
0.14
0.18
0.78
Crusher Oper/Worker
2002-11-06
Quartz, respirable, >1% Qtz
0.13
0.96
0.14
Laborer, Bullgang
2001-12-20
Quartz, respirable, >1% Qtz
0.17
0.22
0.77
Cleanup Man
2001-12-20
Quartz, respirable, >1% Qtz
0.74
2.4
0.31
Front-end Loader Operator
2000-10-11
Respirable dust, <.1mg
0
Front-end Loader Operator
2000-10-11
Quartz, respirable, >1% Qtz
0.7
1.41
0.50
Front-end Loader Operator
2000-10-11
Quartz, respirable, >1% Qtz
0.13
0.42
0.31
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.
PORTABLE CRUSHER recorded 9.08 reportable injury cases per 100 full-time workers in 2025.
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.
9.08
total case rate
9.08
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Montana, metal and nonmetal mining averaged 2.69 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year
total case rate
days-away
fatal
2025 *
9.08
9.08
0.000
2024 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2017 *
0.00
0.00
0.000
2016 *
7.96
0.00
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
11
2025
12
2024
35
2023
27
2022
29
2021
26
2020
31
2019
17
2018
20
2017
21
2016
19
2015
18
2014
19
2013
17
2012
3
2011
3
2010
4
2009
3
2008
4
2007
4
2006
6
2005
6
2004
5
2003
4
2002
13
2001
5
2000
9
Source: MSHA quarterly employment and production, updated weekly.
PORTABLE CRUSHER sits in Cascade County, Montana, where the Census mining category is 0.7% 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.
Cascade County, Montana · Population 84,601
0.7%
Mining share of county employment
$66,203
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
5,340
0
0
0.0
2026 Q1
6,128
0
0
0.0
2025 Q4
6,275
2
0
318.7
2025 Q3
5,549
0
0
0.0
2025 Q2
6,215
5
0
804.5
2025 Q1
3,977
0
0
0.0
2024 Q4
4,815
0
0
0.0
2024 Q3
5,596
0
0
0.0
Show 96 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
7,310
0
0
0.0
2024 Q1
3,319
2
0
602.6
2023 Q4
3,986
0
0
0.0
2023 Q3
7,616
0
0
0.0
2023 Q2
4,817
0
0
0.0
2023 Q1
2,207
0
0
0.0
2022 Q4
4,447
0
0
0.0
2022 Q3
8,323
0
0
0.0
2022 Q2
7,343
0
0
0.0
2022 Q1
3,954
1
0
252.9
2021 Q4
1,950
0
0
0.0
2021 Q3
6,844
0
0
0.0
2021 Q2
6,863
0
0
0.0
2021 Q1
5,838
6
0
1027.7
2020 Q4
6,249
0
0
0.0
2020 Q3
9,712
0
0
0.0
2020 Q2
9,266
0
0
0.0
2020 Q1
5,832
0
0
0.0
2019 Q4
4,629
0
0
0.0
2019 Q3
6,976
0
0
0.0
2019 Q2
7,173
0
0
0.0
2019 Q1
1,923
4
2
2080.1
2018 Q4
6,125
0
0
0.0
2018 Q3
4,239
0
0
0.0
2018 Q2
5,888
0
0
0.0
2018 Q1
3,009
2
1
664.7
2017 Q4
6,950
0
0
0.0
2017 Q3
8,566
0
0
0.0
2017 Q2
9,277
11
0
1185.7
2017 Q1
4,115
0
0
0.0
2016 Q4
6,174
7
3
1133.8
2016 Q3
7,399
2
0
270.3
2016 Q2
6,190
0
0
0.0
2016 Q1
5,351
7
3
1308.2
2015 Q4
3,981
0
0
0.0
2015 Q3
5,735
0
0
0.0
2015 Q2
5,470
3
1
548.4
2015 Q1
3,383
0
0
0.0
2014 Q4
3,856
0
0
0.0
2014 Q3
5,257
0
0
0.0
2014 Q2
5,167
0
0
0.0
2014 Q1
2,697
2
0
741.6
2013 Q4
3,215
0
0
0.0
2013 Q3
4,806
0
0
0.0
2013 Q2
5,182
22
6
4245.5
2013 Q1
1,520
0
0
0.0
2012 Q4
352
0
0
0.0
2012 Q3
668
0
0
0.0
2012 Q2
464
21
7
45258.6
2012 Q1
399
0
0
0.0
2011 Q4
826
0
0
0.0
2011 Q3
736
0
0
0.0
2011 Q2
439
18
6
41002.3
2011 Q1
68
1
0
14705.9
2010 Q4
199
0
0
0.0
2010 Q3
808
0
0
0.0
2010 Q2
840
0
0
0.0
2010 Q1
167
0
0
0.0
2009 Q4
379
7
2
18469.7
2009 Q3
690
0
0
0.0
2009 Q2
608
0
0
0.0
2009 Q1
321
0
0
0.0
2008 Q4
440
3
0
6818.2
2008 Q3
892
0
0
0.0
2008 Q2
1,030
4
1
3883.5
2008 Q1
187
0
0
0.0
2007 Q4
564
0
0
0.0
2007 Q3
1,389
0
0
0.0
2007 Q2
735
0
0
0.0
2007 Q1
562
0
0
0.0
2006 Q4
1,842
3
0
1628.7
2006 Q3
2,936
0
0
0.0
2006 Q2
2,473
0
0
0.0
2006 Q1
1,720
0
0
0.0
2005 Q4
2,433
3
0
1233.0
2005 Q3
2,942
0
0
0.0
2005 Q2
1,225
0
0
0.0
2005 Q1
1,010
0
0
0.0
2004 Q4
1,580
1
0
632.9
2004 Q3
1,976
0
0
0.0
2004 Q2
1,799
0
0
0.0
2004 Q1
1,743
1
0
573.7
2003 Q4
1,367
0
0
0.0
2003 Q3
1,644
0
0
0.0
2003 Q2
1,735
5
2
2881.8
2003 Q1
1,567
1
1
638.2
2002 Q4
3,254
1
0
307.3
2002 Q3
6,320
0
0
0.0
2002 Q2
4,341
0
0
0.0
2002 Q1
3,998
0
0
0.0
2001 Q4
1,527
2
0
1309.8
2001 Q3
2,227
4
0
1796.1
2001 Q2
961
5
0
5202.9
2001 Q1
1,159
0
0
0.0
2000 Q4
2,931
1
1
341.2
2000 Q1
1,623
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
2 on file
2025 · 1 incident
July 1, 2025MT · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerPOWERED HAULAGE