Mining Incidents

Solvay S A: 1 recorded fatality controller

MSHA controller ID: M09703

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Email me when a new MSHA incident is filed at any mine Solvay S A controls.

Fatalities
1
Total incidents
669
Mines on record
1
Years on record
1992–2026
Public-issuer link

QUANTA SERVICES, INC. (PWR) discloses mines under this controller in its SEC Dodd-Frank Section 1503 (EX-95) mine-safety filings.

Compliance record
MSHA citations since 2000
2,975
citations
374
significant & substantial
$1,176,333
proposed penalties
$1,044,381
paid to date
89% of proposed penalties paid to date, a $131,952 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
2,022
inspections on record
38,156
inspection hours
7.8
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.
2,975 citations across 38,156 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.
3
Section 107(a) orders
Most recent order: 2021-09-09.
On record since 2011.
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.
$1.2M
proposed penalties
$1.1M
current assessed
$1.0M
paid to date
$23K
outstanding
2,908 assessments are final orders; 66 contested dockets.
Of $370K in penalties contested before the Commission, $262K was upheld in final decisions.
As of the most recent assessment on 2026-05-05.
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.
12.7%
significant & substantial
2.6%
high negligence or reckless
12.7%
reasonably likely or greater
46.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 10.8% low, 86.5% moderate, 2.6% 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.
1.79
total case rate
0.89
days-away rate
0.000
fatality rate
Above 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 0.91 0.45 0.000
2025 1.79 0.89 0.000
2024 2.45 0.89 0.000
2023 0.92 0.46 0.000
2022 2.12 0.71 0.000
2021 1.71 0.73 0.000
2020 1.05 0.53 0.000
2019 0.87 0.00 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: 2026-05-05
31%
of limit-tested samples over the exposure limit
194
samples
90
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz6426 over
  • Diesel particulate (total carbon)141 over
  • Nuisance dust, respirable, <1% Qtz51 over
  • Unlisted Particulate, respirable, <1% Qtz73

Area samples (mill and shop air)

Last sampled: 2025-12-16
17
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.
161 citations taken to the federal commission · 5% of citations on record
  • Settled 132 · 82%
  • Stood as issued 23 · 14%
  • Still open 6 · 4%
59%
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 102 decided S&S contests · industry: 79%
30%
Penalty reduction in decided contests
$353K proposed, $247K 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 2026-07-09. 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
WEST 2011-401M Settlement Manning 2012 $70K → $67K
WEST 2025-0047 Settlement Simonton 2025 $42K → $23K
WEST 2020-0315 Settlement Manning 2021 $27K → $10K
WEST 2025-0334 Settlement Simonton 2026 $19K → $16K
WEST 2015-343M Default Lesnick 2017 $19K → $19K
WEST 2010-825M Settlement Manning 2012 $18K → $17K
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.

Top causes

Incident timeline

2026
2
2025
10
2024
13
2023
9
2022
12
2021
13
2020
6
2019
9
2018
13
2017
15
2016
8
2015
14
2014
11
2013
12
2012
14
2011
16
2010
18
2009
21
2008
22
2007
27
2006
18
2005
33
2004
22
2003
28
2002
34
2001
36
2000
38
1999
31
1998
21
1997
27
1996
20
1995
43 (1f)
1994
19
1993
17
1992
17

Operators under this controller

Mines on record

Fatalities under this controller

1 recorded
February 3, 1995 WY · Metal/Non-Metal shuttle car operator, mantrip operator, ramcar operator, rail runner, buggy operator Fatality · FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL
Solvay Chemicals, Inc · Struck by falling object

EARTHQUAKE AT MINE SITE EE FOUND PER MINE RESUCE ATTEMPS APPROX 630 AM 2-5-94 DIED PRIOR TO ARRIVAL AT HOSPITAL. CORDIAC ARREST PRIOR TO BEING BROUGHT TO SURFACE.

For insurers, brokers, and safety consultants

Where Solvay S A 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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