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DMC Mine: 19 MSHA citations Metal/Non-Metal

Missoula, Missoula County, MT  ·  Intermittent
MSHA Mine ID: 2402211

DMC Mine has $2K 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
5
Years on record
2003–2021
Latest incident
Sep 2021
Compliance record
MSHA citations since 2004
19
citations
1
significant & substantial
$1,983
proposed penalties
$1,983
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Diversified Materials & Construction LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2001
34
inspections on record
303
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: 303 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

DMC Mine has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
19 assessments are final orders; 2 contested dockets.
Of $200 in penalties contested before the Commission, $200 was upheld in final decisions.
As of the most recent assessment on 2025-06-30.
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.
5.3%
significant & substantial
0.0%
high negligence or reckless
5.3%
reasonably likely or greater
26.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 52.6% low, 47.4% 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.
2 citations taken to the federal commission · 11% of citations on record
  • Settled 2 · 100%
0%
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 1 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$200 proposed, $200 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 2014-08-12.
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 2014-0928 Settlement Manning 2015 $100 → $100
WEST 2014-66M Settlement Lesnick 2014 $100 → $100
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: 2019-10-16, 6 years ago
0%
of limit-tested samples over the exposure limit
7
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg5
  • Quartz, respirable, >1% Qtz2
Show the individual readings (7)
Date Contaminant Concentration Limit Conc / limit Occupation
2019-10-16 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-10-16 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-10-16 Respirable dust, <.1mg 0 Front-end Loader Operator
2018-08-14 Quartz, respirable, >1% Qtz 0.17 0.47 0.36 Front-end Loader Operator
2018-08-14 Quartz, respirable, >1% Qtz 0.13 0.47 0.28 Front-end Loader Operator
2014-06-04 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-10-28 Respirable dust, <.1mg 0 Front-end Loader Operator
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. Diversified Materials & Construction LLC 2001 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 5
2025 4
2024 7
2023 7
2022 6
2021 10
2020 7
2019 9
2018 8
2017 6
2016 5
2015 3
2014 4
2013 1
2012 2
2011 1
2010 1
2009 1
2008 2
2007 2
2006 4
2005 7
2004 4
2003 4
2002 2
2001 3
Source: MSHA quarterly employment and production, updated weekly.

DMC Mine 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 873 0 0 0.0
2026 Q1 2,972 0 0 0.0
2025 Q4 670 0 0 0.0
2025 Q3 1,930 0 0 0.0
2025 Q2 1,677 1 0 596.3
2025 Q1 2,199 0 0 0.0
2024 Q4 3,062 0 0 0.0
2024 Q3 1,890 0 0 0.0
Show 92 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,357 0 0 0.0
2024 Q1 2,066 1 0 484.0
2023 Q4 2,358 0 0 0.0
2023 Q3 3,259 0 0 0.0
2023 Q2 3,043 0 0 0.0
2023 Q1 2,740 0 0 0.0
2022 Q4 1,447 0 0 0.0
2022 Q3 1,985 0 0 0.0
2022 Q2 1,570 0 0 0.0
2022 Q1 878 0 0 0.0
2021 Q4 661 0 0 0.0
2021 Q3 4,245 0 0 0.0
2021 Q2 4,355 1 0 229.6
2021 Q1 2,702 0 0 0.0
2020 Q4 2,989 0 0 0.0
2020 Q3 3,735 0 0 0.0
2020 Q2 3,050 0 0 0.0
2020 Q1 1,284 0 0 0.0
2019 Q4 3,229 2 0 619.4
2019 Q3 3,414 0 0 0.0
2019 Q2 3,543 0 0 0.0
2019 Q1 1,804 0 0 0.0
2018 Q4 2,495 0 0 0.0
2018 Q3 3,230 1 0 309.6
2018 Q2 3,186 0 0 0.0
2018 Q1 1,260 2 0 1587.3
2017 Q4 2,659 0 0 0.0
2017 Q3 2,451 0 0 0.0
2017 Q2 2,937 0 0 0.0
2017 Q1 1,474 0 0 0.0
2016 Q4 1,967 0 0 0.0
2016 Q3 2,647 0 0 0.0
2016 Q2 1,977 0 0 0.0
2016 Q1 673 0 0 0.0
2015 Q4 1,769 0 0 0.0
2015 Q3 1,350 0 0 0.0
2015 Q2 1,035 0 0 0.0
2015 Q1 0 0 0
2014 Q4 1,047 0 0 0.0
2014 Q3 1,260 0 0 0.0
2014 Q2 1,062 2 0 1883.2
2014 Q1 0 0 0
2013 Q4 317 0 0 0.0
2013 Q3 68 3 0 44117.6
2013 Q2 0 0 0
2013 Q1 0 0 0
2012 Q4 208 0 0 0.0
2012 Q3 155 0 0 0.0
2012 Q2 68 0 0 0.0
2012 Q1 0 0 0
2011 Q4 0 0 0
2011 Q3 0 0 0
2011 Q2 95 0 0 0.0
2011 Q1 0 0 0
2010 Q4 42 1 0 23809.5
2010 Q2 0 0 0
2010 Q1 6 0 0 0.0
2009 Q4 0 0 0
2009 Q3 47 0 0 0.0
2009 Q2 45 0 0 0.0
2009 Q1 0 0 0
2008 Q4 219 0 0 0.0
2008 Q3 713 0 0 0.0
2008 Q2 802 0 0 0.0
2008 Q1 352 0 0 0.0
2007 Q4 743 0 0 0.0
2007 Q3 1,001 0 0 0.0
2007 Q2 442 0 0 0.0
2007 Q1 432 0 0 0.0
2006 Q4 2,038 0 0 0.0
2006 Q3 1,763 0 0 0.0
2006 Q2 510 1 0 1960.8
2006 Q1 2,788 0 0 0.0
2005 Q4 3,009 0 0 0.0
2005 Q3 3,437 0 0 0.0
2005 Q2 2,703 0 0 0.0
2005 Q1 1,774 1 0 563.7
2004 Q4 1,287 1 0 777.0
2004 Q3 2,337 0 0 0.0
2004 Q2 1,952 0 0 0.0
2004 Q1 587 1 1 1703.6
2003 Q4 1,386 0 0 0.0
2003 Q3 2,121 0 0 0.0
2003 Q2 2,183 0 0 0.0
2003 Q1 495 0 0 0.0
2002 Q4 286 0 0 0.0
2002 Q3 1,226 0 0 0.0
2002 Q2 1,280 0 0 0.0
2002 Q1 0 0 0
2001 Q4 355 0 0 0.0
2001 Q3 1,737 0 0 0.0
2001 Q2 1,378 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

5 on file

2021 · 1 incident

September 14, 2021 MT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Diversified Materials & Construction LLC · Struck against stationary object

Changing clip on top feed conveyor belt on Screen Plant. Was using pliers trying to break bolt off with pliers. Pliers slipped and hand hit bolt and cut middle knuckle on right hand.

2017 · 1 incident

October 17, 2017 MT · Metal/Non-Metal outside foreman, leadman POWERED HAULAGE
Diversified Materials & Construction LLC · Struck by falling object

Employee was on the ground operating the controls to dump the grizzly on the Road Runner Screen Plant. An 8" or less round rock came off of the overhead deep trough conveyor and struck employee's left lower arm and left hand area.

2006 · 1 incident

2004 · 1 incident

September 7, 2004 MT · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Diversified Materials & Construction LLC · Caught in, under or between a moving and a stationary object

Sorting rocks and while passing rock between two employees, rock slipped and smashed employees thumb between sorting table and rock. Thumb nail was crushed and thumb lacerated.

2003 · 1 incident