82% of proposed penalties paid to date, a $920,912 gap.
Source: MSHA violations data, updated weekly.
Labor enforcement (WHD)
1
labor cases
Source: US DOL Wage and Hour Division enforcement records, matched by employer name and state.
Inspection activity
MSHA inspections since 2000
10,088
inspections on record
203,587
inspection hours
6.2
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.
12,521 citations across 203,587 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘDifferences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$5.1M
proposed penalties
$4.2M
current assessed
$4.2M
paid to date
$37K
outstanding
12,168 assessments are final orders; 413 contested dockets.
Of $2.2M in penalties contested before the Commission, $1.1M was upheld in final decisions.
As of the most recent assessment on 2026-07-13.
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.
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.
0.94
total case rate
0.24
days-away rate
0.035
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.
Year
total case rate
days-away
fatal
2026
1.04
0.40
0.000
2025
0.94
0.24
0.035
2024
1.01
0.31
0.061
2023
0.96
0.23
0.000
2022
0.92
0.27
0.000
2021
0.89
0.18
0.000
2020
1.00
0.20
0.029
2019
1.27
0.39
0.000
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.
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: 2026-08-10
9%
of limit-tested samples over the exposure limit
5,366
samples
2,615
limit-tested
Most sampled contaminants
Diesel particulate (total carbon)62597 over
Quartz, respirable, >1% Qtz1,39261 over
Diesel Particulate Material11020 over
Total Carbon,TC4119 over
Area samples (mill and shop air)
Last sampled: 2026-08-10
106
samples
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.
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.
841citations taken to the federal commission · 7% of citations on record
Settled
709 · 84%
Stood as issued
115 · 14%
Vacated or withdrawn
1 · 0%
Still open
16 · 2%
73%
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 432 decided S&S contests · industry: 79%
44%
Penalty reduction in decided contests
$2.0M proposed, $1.1M 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 2026-07-30. Vacated and withdrawn citations are removed from the file this view attributes through, so that outcome is slightly undercounted here.
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 operator contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
March 5, 2025NC · Metal/Non-Metalwelder (non-shop)Fatality · POWERED HAULAGE
Martin Marietta Materials, Inc. · Caught in, under or between running or meshing objects
Employee was found entangled in conveyor 12 tail pulley. Responding authorities pronounced the employee deceased. Incident is still under investigation.
April 15, 2024CO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techFatality · POWERED HAULAGE
Martin Marietta Materials Inc · Caught in, under or between a moving and a stationary object
Employee was fatally injured while working on a conveyor system.
April 13, 2024GA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorFatality · OTHER
Martin Marietta Materials, Inc. · Drowning
Based on investigation to date, employee suffered a personal medical event (cardiac arrest). "Per Prelim: After washing a concrete pad, a miner drowned in a two-foot-deep pool of water."
Martin Marietta Materials Inc. · Struck by flying object
On March 22, 2016 at approximately 6:35pm an employee was struck by flyrock after a shot was detonated. The employee was sitting inside of a pickup approximately 1,200 feet away from the shot when detonated. This incident resulted in a fatality.
February 27, 2014IA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techFatality · SLIP OR FALL OF PERSON
Martin Marietta Materials, Inc. · Fall from machine
Emp a contract worker repairing a Scaler in Mod 12. The emp had fallen to the ground in fetal position, locked arms, clenched fist and bleeding from the ears. The witness did not know if the emp fell from a height or ground level. The injured emp was airlifted. He was lacking oxygen to brain for 10 minutes. He was pronounced dead at 9:45AM on Feb 28.
October 24, 2012NE · Metal/Non-Metalutility man, errand boy, service truck operatorFatality · POWERED HAULAGE
Martin Marietta Materials Inc · Struck against a moving object
Forklift turned over - The miner was operating a forklift, traveling on a decline toward the mine entrance, when the forklift went out of control. The forklift struck a concrete support for the belt conveyor and overturned, killing him.
October 10, 2010OK · Metal/Non-Metalelectrician helperFatality · ELECTRICAL
Martin Marietta Materials, Inc. · Flash burns (electric)
The investigation into the accident is on-going, but as of now, it appears as the three employees were installing ground vault indicator lights when an ach flash occurred, injuring them. The employees were transported to the hospital.
March 30, 2007LA · Metal/Non-Metalbarge/boat/dredge/towbarge/towboat/leach operator, riverman, deck handFatality · OTHER
Martin Marietta Materials, Inc. · Drowning
Cause of accident is unknown at this time. Employee was working on a winch on a dredge boat and was found drowned behind the boat some time afterwards.
Martin Marietta Materials, Inc. · Caught in, under or between two or more moving objects
An R-35 Euclid Haul truck and a rail car collided.
November 9, 1998AR · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanFatality · POWERED HAULAGE
Martin Marietta Materials Inc · Caught in, under or between a moving and a stationary object
AT APPROX. 4:45 EMPLOYEE WAS OPERATING END DUMP CO # 31-054. THE TRUCK WAS LOADED WITH SB-2 THAT WAS TO BE DUMPED ON THE RAMP OF THE SB-2 STOCKPILE. THE MATERIAL WAS TO BE USED TO BUILD UP THE RAMP. AT APPROX. 5:10 AN EMPLOYEE OBSERVED END DUMP #54 LAYING ON ITS SIDE AT THE BASE OF THE STOCKPILE.
For insurers, brokers, and safety consultants
Where Martin Marietta Materials Inc stands on silica, penalties, and injury rate
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes
dust and quartz as separate files and never the silica figure itself. We derive it per sample,
score it against the limit, and set the operator's injury rate against a benchmark built from
the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality
history. Delivered as a PDF with the underlying data as CSV.