Mining Incidents

MATHIAS NORTH PIT: 37 MSHA citations Metal/Non-Metal

Mathias Concrete Inc · Surface
Controlled by Marshall T Mathias
Monte Vista, Rio Grande County, CO  ·  Intermittent
MSHA Mine ID: 0502415

MATHIAS NORTH PIT has $9K 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 2001
37
citations
8
significant & substantial
$8,929
proposed penalties
$8,782
paid to date
98% of proposed penalties paid to date, a $147 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
38
inspections on record
434
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: 434 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2020-11-16.
On record since 2020.
Source: MSHA imminent-danger order records, updated weekly.

MATHIAS NORTH PIT has $9K 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.
$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$0
outstanding
33 assessments are final orders; 1 contested dockets.
Of $207 in penalties contested before the Commission, $60 was upheld in final decisions.
As of the most recent assessment on 2026-06-02.
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.
22.9%
significant & substantial
5.7%
high negligence or reckless
22.9%
reasonably likely or greater
54.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 25.7% low, 68.6% moderate, 5.7% 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 · 3% of citations on record
  • Settled 1 · 100%
71%
Penalty reduction in decided contests
$207 proposed, $60 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 2005-02-24.
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 2005-198M Settlement Manning 2005 $207 → $60
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: 2024-09-18
4
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
Show the individual readings (4)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-09-18 Respirable dust, <.1mg 0 Front-end Loader Operator
2024-09-18 Respirable dust, <.1mg 0 Backhoe Operator
2024-09-18 Respirable dust, <.1mg 0 Complete Load-Haul-Dump
2011-07-07 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. Mathias Concrete Inc 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 5
2024 3
2023 3
2022 4
2021 4
2020 3
2019 3
2018 3
2017 3
2016 3
2015 3
2014 3
2013 3
2012 3
2011 3
2010 3
2009 3
2008 3
2007 3
2006 3
2005 3
2004 3
2003 3
2002 3
2001 3
2000 4
Source: MSHA quarterly employment and production, updated weekly.

MATHIAS NORTH PIT sits in Rio Grande County, Colorado, where the Census mining category is 1.4% 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.
Rio Grande County, Colorado · Population 11,394
1.4%
Mining share of county employment
$62,166
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 1,286 2 0 1555.2
2026 Q1 2 0 0 0.0
2025 Q4 1,829 0 0 0.0
2025 Q1 392 0 0 0.0
2024 Q4 796 0 0 0.0
2024 Q3 1,155 0 0 0.0
2024 Q2 930 0 0 0.0
2024 Q1 0 0 0
Show 94 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 1,137 0 0 0.0
2023 Q3 1,169 2 0 1710.9
2023 Q2 1,094 0 0 0.0
2023 Q1 0 0 0
2022 Q4 987 0 0 0.0
2022 Q3 1,785 0 0 0.0
2021 Q4 1,497 0 0 0.0
2021 Q3 1,679 0 0 0.0
2021 Q2 1,356 0 0 0.0
2021 Q1 0 0 0
2020 Q4 622 7 3 11254.0
2020 Q3 888 0 0 0.0
2020 Q2 885 0 0 0.0
2020 Q1 0 4 1
2019 Q4 806 0 0 0.0
2019 Q3 808 0 0 0.0
2019 Q2 639 0 0 0.0
2019 Q1 0 0 0
2018 Q4 533 1 0 1876.2
2018 Q3 481 0 0 0.0
2018 Q2 145 0 0 0.0
2018 Q1 0 0 0
2017 Q4 675 1 0 1481.5
2017 Q3 732 0 0 0.0
2017 Q2 763 0 0 0.0
2017 Q1 0 0 0
2016 Q4 643 0 0 0.0
2016 Q3 792 0 0 0.0
2016 Q2 792 0 0 0.0
2016 Q1 0 0 0
2015 Q4 591 0 0 0.0
2015 Q3 901 0 0 0.0
2015 Q2 674 0 0 0.0
2015 Q1 0 0 0
2014 Q4 711 0 0 0.0
2014 Q3 932 0 0 0.0
2014 Q2 1,125 1 0 888.9
2014 Q1 0 0 0
2013 Q4 542 0 0 0.0
2013 Q3 710 0 0 0.0
2013 Q2 810 0 0 0.0
2013 Q1 0 0 0
2012 Q4 671 2 0 2980.6
2012 Q3 896 1 0 1116.1
2012 Q2 640 0 0 0.0
2012 Q1 0 0 0
2011 Q4 310 0 0 0.0
2011 Q3 370 0 0 0.0
2011 Q2 210 3 1 14285.7
2011 Q1 0 0 0
2010 Q4 396 0 0 0.0
2010 Q3 784 0 0 0.0
2010 Q2 862 0 0 0.0
2010 Q1 80 0 0 0.0
2009 Q4 839 2 2 2383.8
2009 Q3 669 0 0 0.0
2009 Q2 650 0 0 0.0
2009 Q1 0 0 0
2008 Q4 835 0 0 0.0
2008 Q3 652 0 0 0.0
2008 Q2 659 2 0 3034.9
2008 Q1 0 0 0
2007 Q4 723 0 0 0.0
2007 Q3 782 0 0 0.0
2007 Q2 780 2 1 2564.1
2007 Q1 0 0 0
2006 Q4 674 0 0 0.0
2006 Q3 1,176 0 0 0.0
2006 Q2 781 0 0 0.0
2006 Q1 0 0 0
2005 Q4 679 1 0 1472.8
2005 Q3 900 0 0 0.0
2005 Q2 789 0 0 0.0
2005 Q1 0 0 0
2004 Q4 753 1 0 1328.0
2004 Q3 891 1 0 1122.3
2004 Q2 786 0 0 0.0
2004 Q1 0 0 0
2003 Q4 614 0 0 0.0
2003 Q3 745 0 0 0.0
2003 Q2 794 0 0 0.0
2003 Q1 0 0 0
2002 Q4 744 0 0 0.0
2002 Q3 828 0 0 0.0
2002 Q2 584 0 0 0.0
2002 Q1 0 0 0
2001 Q4 419 1 0 2386.6
2001 Q3 537 1 0 1862.2
2001 Q2 1,117 0 0 0.0
2001 Q1 0 0 0
2000 Q4 1,158 0 0 0.0
2000 Q3 1,220 0 0 0.0
2000 Q2 1,186 0 0 0.0
2000 Q1 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.