Mining Incidents

National Lime & Stone Co.: 1 recorded fatality controller

MSHA controller ID: M00255

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Email me when a new MSHA incident is filed at any mine National Lime & Stone Co. controls.

Fatalities
1
Total incidents
748
Mines on record
18
Years on record
1983–2026
Compliance record
MSHA citations since 2000
1,300
citations
196
significant & substantial
$264,943
proposed penalties
$247,998
paid to date
94% of proposed penalties paid to date, a $16,945 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
822
inspections on record
15,150
inspection hours
8.6
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.
1,300 citations across 15,150 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.
4
Section 107(a) orders
Most recent order: 2025-04-14.
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.
$265K
proposed penalties
$251K
current assessed
$248K
paid to date
$3K
outstanding
1,264 assessments are final orders; 25 contested dockets.
Of $90K in penalties contested before the Commission, $76K 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.
15.2%
significant & substantial
1.9%
high negligence or reckless
15.1%
reasonably likely or greater
44.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.2% none, 23.2% low, 74.7% moderate, 1.9% 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.
3.17
total case rate
1.98
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 2.99 1.50 0.000
2025 3.17 1.98 0.000
2024 3.97 1.59 0.000
2023 3.76 2.09 0.000
2022 2.64 1.76 0.000
2021 2.39 1.43 0.000
2020 1.69 0.84 0.000
2019 2.78 1.86 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: 2026-06-25
5%
of limit-tested samples over the exposure limit
535
samples
371
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz6715 over
  • Quartz, respirable, >1% Qtz1315 over
  • Respirable dust, <.1mg142
  • Nuisance dust, respirable, <1% Qtz71
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.
24 citations taken to the federal commission · 2% of citations on record
  • Settled 17 · 71%
  • Stood as issued 5 · 21%
  • Still open 2 · 8%
80%
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 15 decided S&S contests · industry: 79%
15%
Penalty reduction in decided contests
$84K proposed, $71K 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 2026-03-11. 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 2012-764M Settlement Miller 2014 $81K → $69K
LAKE20010177M Settlement Barbour 2001 $2K → $1K
LAKE20020122M Settlement Barbour 2002 $2K → $900
LAKE20000101M Default Barbour 2000 $1K → $1K
LAKE20020053M Settlement Barbour 2002 $760 → $400
LAKE 2014-0256 Settlement Bulluck 2015 $499 → $100
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.

Top causes

Incident timeline

2026
5
2025
9
2024
10
2023
10
2022
6
2021
5
2020
5
2019
8
2018
6
2017
6
2016
5
2015
12
2014
4
2013
13
2012
10
2011
5
2010
4
2009
8
2008
12
2007
16
2006
12
2005
27
2004
22
2003
37
2002
26
2001
35
2000
44
1999
27
1998
26
1997
21
1996
24
1995
24
1994
34 (1f)
1993
32
1992
25
1991
30
1990
29
1989
19
1988
16
1987
19
1986
10
1985
14
1984
19
1983
17

Operators under this controller

Mines on record

Fatalities under this controller

1 recorded
February 11, 1994 OH · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver Fatality · MACHINERY
Chesterville Sand & Gravel Co., Inc. · Struck by falling object

THE INJURED WAS OPERATING A CHAINSAW CLEARING A DOWNED TREE THAT WAS LAYING AGAINST A SLOPE. WHEN THE EMPLOYEE CUT THE TREE AT ITS BASE, THE TOP OF THE TREE EXTENDING BEYOND THE CREST OF SLOPE FELL TO THE GROUND ALLOWING THE BASE OF THE TREE TO SWING UPWARD, STRIKING THE EMPLOYEE IN THE RIGHT SIDE OF THE FACE. THERE WERE NO IMMEDIATE WITNESSES. CAUSE OF ACCIDENT IS SPECULATIVE.

For insurers, brokers, and safety consultants

Where National Lime & Stone Co. 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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