Mining Incidents

Medina Rock & Rail: 97 MSHA citations Metal/Non-Metal

Hondo, Medina County, TX  ·  Active
MSHA Mine ID: 4105170

Medina Rock & Rail has $21K in proposed MSHA penalties and $458 outstanding across 3 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
9
Years on record
2016–2025
Latest incident
Jul 2025
Compliance record
MSHA citations since 2016
97
citations
7
significant & substantial
$21,241
proposed penalties
$20,783
paid to date
98% of proposed penalties paid to date, a $458 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2016
27
inspections on record
1,139
inspection hours
8.5
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.
97 citations across 1,139 inspection hours.
Source: MSHA inspections data, updated weekly.

Medina Rock & Rail has $21K in proposed MSHA penalties and $458 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.
$21K
proposed penalties
$21K
current assessed
$21K
paid to date
$458
outstanding
95 assessments are final orders; 3 contested dockets.
Of $482 in penalties contested before the Commission, $482 was upheld in final decisions.
As of the most recent assessment on 2026-02-24.
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.
7.3%
significant & substantial
8.3%
high negligence or reckless
7.3%
reasonably likely or greater
16.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 3.1% low, 88.5% moderate, 8.3% 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.
5 citations taken to the federal commission · 5% of citations on record
  • Settled 4 · 80%
  • Still open 1 · 20%
100%
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
$482 proposed, $482 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 2025-09-15.
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
CENT 2016-0472 Settlement Lesnick 2017 $250 → $250
CENT 2017-0379 Settlement Lesnick 2017 $232 → $232
CENT 2025-0369 Decision pending
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: 2026-02-24
0%
of limit-tested samples over the exposure limit
12
samples
5
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg5
  • Quartz, respirable, >1% Qtz4
  • Nuisance dust, respirable, <1% Qtz3
Show the individual readings (12)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-02-24 Quartz, respirable, >1% Qtz 0.23 Cleanup Man
2026-02-24 Quartz, respirable, >1% Qtz 0.54 1.92 0.28 Cleanup Man
2022-02-16 Respirable dust, <.1mg 0 Truck Driver
2022-02-16 Respirable dust, <.1mg 0 Utility Man
2022-02-16 Respirable dust, <.1mg 0 Utility Man
2019-11-06 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Cleanup Man
2019-11-06 Respirable dust, <.1mg 0 Cleanup Man
2019-11-06 Nuisance dust, respirable, <1% Qtz 0.19 10 0.02 Cleanup Man
2019-11-06 Quartz, respirable, >1% Qtz 0.36 Cleanup Man
2016-05-11 Quartz, respirable, >1% Qtz 0.45 2.77 0.16 Cleanup Man
2016-05-11 Nuisance dust, respirable, <1% Qtz 0.21 10 0.02 Cleanup Man
2016-05-11 Respirable dust, <.1mg 0 Cleanup Man
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.

Medina Rock & Rail recorded 0.00 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.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below 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 Texas, metal and nonmetal mining averaged 1.17 cases per 100 workers that year.
Year total case rate days-away fatal
2025 0.00 0.00 0.000
2024 0.00 0.00 0.000
2023 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 4.58 0.00 0.000
2018 * 2.03 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.
Ownership history
  1. Martin Marietta Materials Inc. 2016 to 2021
  2. Martin Marietta Materials Southwest, LLC 2021 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 57
2025 51
2024 51
2023 51
2022 51
2021 51
2020 55
2019 44
2018 33
2017 49
2016 39
Source: MSHA quarterly employment and production, updated weekly.

Medina Rock & Rail sits in Medina County, Texas, where the Census mining category is 3.1% 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.
Medina County, Texas · Population 52,419
3.1%
Mining share of county employment
$73,462
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 36,384 0 0 0.0
2026 Q1 39,271 2 0 50.9
2025 Q4 30,222 0 0 0.0
2025 Q3 22,826 1 0 43.8
2025 Q2 31,502 0 0 0.0
2025 Q1 27,929 2 0 71.6
2024 Q4 29,485 0 0 0.0
2024 Q3 29,542 2 0 67.7
Show 34 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 34,848 0 0 0.0
2024 Q1 31,555 2 0 63.4
2023 Q4 37,701 0 0 0.0
2023 Q3 34,836 2 0 57.4
2023 Q2 25,734 0 0 0.0
2023 Q1 33,523 0 0 0.0
2022 Q4 33,815 3 0 88.7
2022 Q3 40,061 0 0 0.0
2022 Q2 35,897 0 0 0.0
2022 Q1 30,929 3 0 97.0
2021 Q4 35,133 0 0 0.0
2021 Q3 34,340 1 0 29.1
2021 Q2 32,925 0 0 0.0
2021 Q1 28,834 0 0 0.0
2020 Q4 32,123 0 0 0.0
2020 Q3 30,981 2 1 64.6
2020 Q2 35,307 1 0 28.3
2020 Q1 40,723 0 0 0.0
2019 Q4 40,974 3 1 73.2
2019 Q3 35,129 0 0 0.0
2019 Q2 29,122 8 0 274.7
2019 Q1 25,650 11 1 428.8
2018 Q4 25,886 0 0 0.0
2018 Q3 24,976 0 0 0.0
2018 Q2 25,081 2 0 79.7
2018 Q1 22,505 0 0 0.0
2017 Q4 29,280 3 0 102.5
2017 Q3 35,544 12 1 337.6
2017 Q2 34,814 0 0 0.0
2017 Q1 37,237 7 0 188.0
2016 Q4 39,251 0 0 0.0
2016 Q3 35,809 0 0 0.0
2016 Q2 29,561 10 1 338.3
2016 Q1 27,643 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

9 on file

2025 · 1 incident

July 8, 2025 TX · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant OTHER
Martin Marietta Materials Southwest, LLC · Unclassified, insufficient data

The Medical Technician with Professional Health Services was onsite, working in their mobile unit, conducting medical surveillance when they suffered a personal medical episode. The Technician was transported to the hospital via ambulance. The Technician was diagnosed with a vitamin deficiency and was released without restrictions.

2024 · 1 incident

January 31, 2024 TX · Metal/Non-Metal welder (shop) SLIP OR FALL OF PERSON
Martin Marietta Materials Southwest, LLC · Fall onto or against objects

The employee fainted while working in a confined space and suffered a cut above the eyebrow. The plant called for an ambulance and the employee was taken to the hospital.

2023 · 1 incident

May 9, 2023 TX · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DISORDERS (PHYSICAL AGENTS)

The contractor was coming up the stairs when the contractor felt dizzy and passed out.

2021 · 1 incident

September 30, 2021 TX · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Martin Marietta Materials Inc. · Struck by falling object

EE was working on mobile camera. While cranking up the camera mast, the trailer jack stand failed causing the front of the trailer to fall to the ground. When the front of the trailer collapsed, the camera mast dropped striking EE's right ring finger cutting the tip of the finger. Stitches were required to close the cut.

2019 · 3 incidents

December 16, 2019 TX · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Martin Marietta Materials Inc. · Fall down stairs

EE was wearing rubber boots while carrying a shovel from the 2nd deck of the TK portable crusher. As employee stepped on 3rd to the last step, EE stepped on side of rubber boot causing ankle to twist and EE fell to the 1st level down the three stairs.

November 22, 2019 TX · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Martin Marietta Materials Inc. · Fall to lower level, (Not Elsewhere Classified)

EE was going to check a screen to make sure it was clear for plant shutdown, maintenance contractor had taken floor cover off of platform. EE stepped through the hole with left knee and cut knee.

November 9, 2019 TX · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Martin Marietta Materials Inc. · Fall to the walkway or working surface

EE#1 was carrying two 2x12 (10ft long) wood boards down the TK stairs. As the employee stepped down onto the ground, EE rolled EE's left ankle. EE#2, who was on the ground nearby, assisted EE#1 in getting up and seated on the walking pad of the TK. EE#3 then brought EE#1 to the employee lunchroom and they applied ice to the ankle.

2018 · 1 incident

March 8, 2018 TX · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Materials Inc. · Struck by flying object

EE's were in the process of splicing a belt. On the last movement of putting tension in the conveyor belt, a chain link stretched and broke. The chain stuck the EE's arm near the wrist. EE was seen by doctor and released to light duty with a diagnosis of contusion.

2016 · 1 incident

October 31, 2016 TX · Metal/Non-Metal welder (shop) MACHINERY
Martin Marietta Materials Inc. · Struck by falling object

Employee was torch cutting a roller free and the roller end dropped onto employees fingertip. This resulted in a fracture to tuft of finger and a laceration.