Mining Incidents

Robert Medina & Sons Costilla Pit: 72 MSHA citations Metal/Non-Metal

Costilla, Taos County, NM  ·  Intermittent
MSHA Mine ID: 2902050

Robert Medina & Sons Costilla Pit has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
2022
Latest incident
Dec 2022
Compliance record
MSHA citations since 2002
72
citations
22
significant & substantial
$9,727
proposed penalties
$9,727
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
56
inspections on record
564
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: 564 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Robert Medina & Sons Costilla Pit has $10K in proposed MSHA penalties and $0 outstanding across 0 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.
$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$0
outstanding
72 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-20.
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.
30.6%
significant & substantial
8.3%
high negligence or reckless
30.6%
reasonably likely or greater
62.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 15.3% low, 76.4% moderate, 8.3% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, 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: 2017-08-22, 9 years ago
0%
of limit-tested samples over the exposure limit
6
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Quartz, respirable, >1% Qtz2
Show the individual readings (6)
Date Contaminant Concentration Limit Conc / limit Occupation
2017-08-22 Respirable dust, <.1mg 0 Mechanic
2017-08-22 Respirable dust, <.1mg 0 Supervisor, Co. Official
2012-05-23 Quartz, respirable, >1% Qtz 0.18 0.89 0.20 Supervisor, Co. Official
2012-05-23 Respirable dust, <.1mg 0 Laborer, Bullgang
2012-05-23 Respirable dust, <.1mg 0 Front-end Loader Operator
2000-09-06 Quartz, respirable, >1% Qtz 0.19 1.06 0.18 Bulldozer 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. Robert Medina & Sons Concrete & Sand Inc 1990 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 4
2024 3
2023 3
2022 3
2021 4
2020 4
2019 3
2018 3
2017 3
2016 4
2015 4
2014 3
2013 2
2012 4
2011 2
2010 4
2009 4
2008 3
2007 2
2006 3
2005 2
2004 3
2003 3
2002 3
2001 5
2000 2
Source: MSHA quarterly employment and production, updated weekly.

Robert Medina & Sons Costilla Pit sits in Taos County, New Mexico, where the Census mining category is 0.6% 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.
Taos County, New Mexico · Population 34,516
0.6%
Mining share of county employment
$58,908
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 610 3 0 4918.0
2026 Q1 1 0 0 0.0
2025 Q4 1,424 0 0 0.0
2025 Q3 1,319 0 0 0.0
2025 Q2 1,017 0 0 0.0
2025 Q1 1 0 0 0.0
2024 Q4 1,085 3 0 2765.0
2024 Q3 1,284 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 963 4 0 4153.7
2024 Q1 122 0 0 0.0
2023 Q4 1,844 0 0 0.0
2023 Q3 642 0 0 0.0
2023 Q2 660 0 0 0.0
2023 Q1 1 0 0 0.0
2022 Q4 1,445 0 0 0.0
2022 Q3 1,205 4 2 3319.5
2022 Q2 840 0 0 0.0
2022 Q1 0 0 0
2021 Q4 965 0 0 0.0
2021 Q3 1,285 0 0 0.0
2021 Q2 360 1 0 2777.8
2021 Q1 20 0 0 0.0
2020 Q4 1,042 0 0 0.0
2020 Q3 965 1 1 1036.3
2020 Q2 422 1 0 2369.7
2019 Q4 1,623 0 0 0.0
2019 Q3 1,044 0 0 0.0
2019 Q2 320 2 0 6250.0
2019 Q1 0 0 0
2018 Q4 645 0 0 0.0
2018 Q3 1,246 1 0 802.6
2018 Q2 400 0 0 0.0
2018 Q1 1 0 0 0.0
2017 Q4 1,360 0 0 0.0
2017 Q3 1,184 3 1 2533.8
2017 Q2 1,230 0 0 0.0
2017 Q1 40 3 0 75000.0
2016 Q4 2,568 0 0 0.0
2016 Q3 1,558 5 3 3209.2
2016 Q2 1,342 0 0 0.0
2016 Q1 1 0 0 0.0
2015 Q4 1,712 0 0 0.0
2015 Q3 2,042 0 0 0.0
2015 Q2 1,283 0 0 0.0
2015 Q1 401 0 0 0.0
2014 Q4 1,992 7 1 3514.1
2014 Q3 997 0 0 0.0
2014 Q2 1,153 0 0 0.0
2014 Q1 2 0 0 0.0
2013 Q4 1 0 0 0.0
2013 Q3 10 0 0 0.0
2013 Q2 390 0 0 0.0
2013 Q1 41 0 0 0.0
2012 Q4 482 6 4 12448.1
2012 Q3 1,514 0 0 0.0
2012 Q2 809 8 3 9888.8
2012 Q1 7 0 0 0.0
2011 Q3 245 0 0 0.0
2011 Q2 123 0 0 0.0
2011 Q1 0 0 0
2010 Q4 1,845 0 0 0.0
2010 Q3 1,575 6 2 3809.5
2010 Q2 426 0 0 0.0
2010 Q1 462 0 0 0.0
2009 Q4 1,173 0 0 0.0
2009 Q3 1,498 0 0 0.0
2009 Q2 1,064 0 0 0.0
2009 Q1 165 0 0 0.0
2008 Q4 1,519 1 0 658.3
2008 Q3 1,205 0 0 0.0
2008 Q2 439 0 0 0.0
2008 Q1 2 0 0 0.0
2007 Q4 800 0 0 0.0
2007 Q3 800 0 0 0.0
2007 Q2 440 4 2 9090.9
2007 Q1 40 0 0 0.0
2006 Q4 240 0 0 0.0
2006 Q3 645 0 0 0.0
2006 Q2 885 3 2 3389.8
2006 Q1 41 0 0 0.0
2005 Q4 0 0 0
2005 Q3 420 0 0 0.0
2005 Q2 482 0 0 0.0
2005 Q1 1 0 0 0.0
2004 Q4 245 2 0 8163.3
2004 Q3 573 0 0 0.0
2004 Q2 165 0 0 0.0
2004 Q1 122 0 0 0.0
2003 Q4 322 0 0 0.0
2003 Q3 161 0 0 0.0
2003 Q2 161 3 1 18633.5
2003 Q1 164 0 0 0.0
2002 Q4 245 0 0 0.0
2002 Q3 315 0 0 0.0
2002 Q2 165 1 0 6060.6
2002 Q1 2 0 0 0.0
2001 Q4 340 0 0 0.0
2001 Q3 600 0 0 0.0
2001 Q2 290 0 0 0.0
2001 Q1 5 0 0 0.0
2000 Q4 485 0 0 0.0
2000 Q3 400 0 0 0.0
2000 Q2 120 0 0 0.0
2000 Q1 0 0 0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2022 · 1 incident

December 4, 2022 NM · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator DISORDERS (REPEATED TRAUMA)
Robert Medina & Sons Concrete & Sand Inc · (Not Elsewhere Classified)

Operator on loader to pit, sitting down and walking around they got DVT.