Mining Incidents

USX Corp (United States Steel Corp): 6 recorded fatalities controller

MSHA controller ID: M00222

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Email me when a new MSHA incident is filed at any mine USX Corp (United States Steel Corp) controls.

Fatalities
6
Total incidents
2,775
Mines on record
21
Years on record
1983–2026
Public-issuer link

UNITED STATES STEEL CORP (X) discloses mines under this controller in its SEC Dodd-Frank Section 1503 (EX-95) mine-safety filings.

Compliance record
MSHA citations since 2000
13,040
citations
2,557
significant & substantial
$17,447,858
proposed penalties
$14,853,156
paid to date
85% of proposed penalties paid to date, a $2,594,702 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
610
inspections on record
58,945
inspection hours
22.1
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.
13,040 citations across 58,945 inspection hours.
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: 2025-03-19.
On record since 2025.
Source: MSHA imminent-danger order records, 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.
$17.4M
proposed penalties
$15.6M
current assessed
$14.9M
paid to date
$703K
outstanding
12,916 assessments are final orders; 347 contested dockets.
Of $9.1M in penalties contested before the Commission, $7.2M was upheld in final decisions.
As of the most recent assessment on 2026-05-28.
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.
19.7%
significant & substantial
1.2%
high negligence or reckless
19.6%
reasonably likely or greater
30.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.3% none, 34.8% low, 63.7% moderate, 1.2% high, 0.0% reckless.
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.
1.54
total case rate
0.29
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.
Year total case rate days-away fatal
2026 1.13 0.28 0.000
2025 1.54 0.29 0.000
2024 1.68 0.25 0.000
2023 1.52 0.25 0.000
2022 1.58 0.21 0.000
2021 1.24 0.32 0.000
2020 1.23 0.31 0.000
2019 0.92 0.36 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: 2026-03-10
12%
of limit-tested samples over the exposure limit
582
samples
360
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz26443 over
  • Nickel fumes321 over
  • Respirable dust, <.1mg104
  • Fibers, >5um68

Area samples (mill and shop air)

Last sampled: 2026-03-12
60
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.
2,998 citations taken to the federal commission · 23% of citations on record
  • Settled 2,889 · 96%
  • Stood as issued 26 · 1%
  • Vacated or withdrawn 1 · 0%
  • Still open 82 · 3%
79%
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 1,124 decided S&S contests · industry: 79%
22%
Penalty reduction in decided contests
$9.2M proposed, $7.2M 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 2026-07-08. 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 controller contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
LAKE 2016-0248 Settlement Miller 2016 $233K → $178K
LAKE 2008-316M Settlement Barbour 2010 $182K → $166K
LAKE 2024-0168 Settlement Lewis 2024 $169K → $133K
LAKE 2017-0294 Settlement McCarthy 2018 $131K → $96K
LAKE 2009-201M Settlement Barbour 2010 $129K → $91K
LAKE 2008-418M Settlement Barbour 2010 $120K → $107K
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.

Top causes

Incident timeline

2026
15
2025
54
2024
56
2023
34
2022
37
2021
31
2020
28
2019
27
2018
31
2017
31
2016
32
2015
26
2014
50
2013
37
2012
30
2011
30
2010
37
2009
22
2008
29
2007
31
2006
44
2005
51
2004
51
2003
44
2002
41
2001
70
2000
78
1999
75 (1f)
1998
72 (1f)
1997
71
1996
79
1995
87
1994
78
1993
97
1992
117
1991
142
1990
123
1989
109
1988
149 (1f)
1987
120 (1f)
1986
66
1985
113
1984
109 (1f)
1983
121 (1f)

Operators under this controller

Mines on record

Fatalities under this controller

6 recorded
March 29, 1999 AL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer Fatality · MACHINERY
Lehigh Portland Cement Company · Struck by falling object

EE WAS OPERATING PC400 KOMATSU EXCAVATOR BY THE 530 LEVE SW QUARRY WALL, WHEN A LARGE ROCK STRUCK THE BUCKET & SLID DOWN THE ARM, STRIKING THE OPERATOR'S CAB. FATALLY INJURING THE OPERATOR.

August 23, 1998 MN · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor Fatality · EXPLODING VESSELS UNDER PRESSURE

THE SHIFT MANAGER TURNED THE VALVE ON THE PIPE PLUG WHICH WAS CONNECTED TO AN AIR COMPRESSOR ON THE BANK TO INFLATE THE PLUG. WHEN HE FELT THERE WAS ENOUGH AIR IN THE PIPE PLUG, HE SHUT THE VA LVE AND STATED OUT LOUD, "I THINK THERE IS ENOUGH AIR IN THE BLADDER, BUT THERE IS STILL SEEPAGE BETWEEN THE BLADDER AND THE PIPE." THE DECEASED BENT OVER THE PIPE AND TURNED THE AIR VALVE ON

December 22, 1988 MN · Metal/Non-Metal mine manager, mine foreman, mine owner Fatality · POWERED HAULAGE
United States Steel Corp-Minnesota Ore Operations · Struck by powered moving object

THE DECEASED WAS WALKING WEST ON THE NORTH EDGE OF AN EMPLOYEE ROAD WHEN HE WAS STRUCK BY A PRIVATE VEHICLE DRIVEN BY ANOTHER EMPLOYEE WHO WAS TRAVELING WEST TO THE WEST PIT DRY THE ACCIDENT O CCURRED PRIOR TO THE START OF THE SHIFT

April 3, 1987 MI · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver Fatality · POWERED HAULAGE
Usx Corp · Caught in, under or between a moving and a stationary object

SEE ATTACHMENT-8ECEASED REPORTED TO WORK..FOR THE 5:30PM TO 1:30AM SHIFT.. FROM PRELIM: DRIVING HAUL TRUCK WHEN IT WENT OUT OF CONTROL.EITHER THROWN OR JUMPED FROM VEHICLE AND WAS RUN OVER BY REAR WHEEL. 3

November 9, 1984 TN · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver Fatality · SLIP OR FALL OF PERSON
Usx Corp · Fall from machine

INJURED APPARENTLY FELL FROM A PARKED HAULAGE TRUCK TO GROUND LEVEL AS HE WAS CLIMBING DOWN OVER THE TRUCK SUPERSTRUCTURE. AT SOME POINT IN HIS DECENT HE FELL AND STRUCK THE LEFT SIDE OF HIS H EAD AND LEFT SHOULDER AGAINST A FLAT SURFACE HE WAS FOUND APPROX. 6 FT IN FRONT O THE PARKED TRUCK, LYING ON HIS BACK, WITH ARMS FOLDED OVER HIS CHEST. HIS HARD HAT SOME 4 FT AWAY.

June 24, 1983 KS · Metal/Non-Metal dryer operator, kiln operator, dry plant operator, fluid operator, bed dryer operator Fatality · FIRE
Lehigh Portland Cement Company · Contact with hot objects or substances

NO 1 & 2 STONE DRYERS WERE OPERATING ON #6 FUEL OIL AND #3 DRYER WAS OPERATING ON NATURAL GAS DURING THE 12 MIDNIGHT TO 8:00 AM SHIFT ON 6/24L83. RAW MATERIAL DEPT INCLUDING THE DRYERS WAS SCH INSURE THAT THE OIL IN THE FUEL LINES FROM THE STORAGE TANK TO THE DRYER BURNERS ARE PURGED OF OIL WHICH OTHERWISE WOULD PLUT THE FUEL LINES. THE FOREMAN PERSONALLY NOTIFIED THE INJURED TO BE

For insurers, brokers, and safety consultants

Where USX Corp (United States Steel Corp) 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.

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