Magruder Limestone Co: 739 MSHA citations operator
Controlled by
Mark Magruder
MSHA operator ID: L11956
Magruder Limestone Co has had no fatalities among 110 reportable incidents since 1983. MSHA has proposed $225K in penalties since 2000, with $302 outstanding.
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- Fatalities
- 0
- Total incidents
- 110
- Mines on record
- 11
- Years on record
- 1983–2026
Compliance record
MSHA citations since 2000
739
citations
153
significant & substantial
$225,157
proposed penalties
$159,418
paid to date
71% of proposed penalties paid to date. The remaining $65,739 was reduced, settled, contested or is still owed.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
463
inspections on record
6,071
inspection hours
12.2
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.739 citations across 6,071 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.$225K
proposed penalties
$160K
current assessed
$159K
paid to date
$302
outstanding
716 assessments are final orders; 50 contested dockets.
Of $163K in penalties contested before the Commission, $76K was upheld in final decisions.
As of the most recent assessment on 2026-08-20.
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.20.8%
significant & substantial
4.2%
high negligence or reckless
20.5%
reasonably likely or greater
59.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 20.4% low, 75.4% moderate, 4.2% 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 and are withheld below 20,000 hours in a year. Employment reports reach back to 1983, but those earlier years come from MSHA's archived file format and are not used in rates.4.18
total case rate
0.00
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 1.98 cases per 100 workers.
| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2026 * | 14.45 | 0.00 | 0.000 |
| 2025 | 4.18 | 0.00 | 0.000 |
| 2024 | 10.24 | 5.85 | 0.000 |
| 2023 | 3.07 | 1.54 | 0.000 |
| 2022 | 3.18 | 0.00 | 0.000 |
| 2021 | 3.24 | 1.62 | 0.000 |
| 2020 | 1.64 | 1.64 | 0.000 |
| 2019 | 13.30 | 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.
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: 2026-09-09
ⓘ
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.4%
of limit-tested samples over the exposure limit
289
samples
176
limit-tested
Most sampled contaminants
- Quartz, respirable, >1% Qtz1355 over
- Manganese fumes32 over
- Respirable dust, <.1mg83
- Nuisance dust, respirable, <1% Qtz56
Area samples (mill and shop air)
Last sampled: 2025-01-161
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.
141
citations taken to the federal commission · 19% of citations on record
- Settled 118 · 84%
- Stood as issued 22 · 16%
- Vacated or withdrawn 1 · 1%
70%
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 57 decided S&S contests · industry: 79%
47%
Penalty reduction in decided contests
$141K proposed, $75K 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 2025-02-25. 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.
| Docket | Decision | Judge | Year | Proposed / upheld |
|---|---|---|---|---|
| CENT 2011-460M | Prevail | McCarthy | 2013 | $52K → $17K |
| CENT 2010-1256M | Vacate | McCarthy | 2013 | $17K → $0 |
| CENT 2015-0264 | Settlement | Rae | 2015 | $8K → $6K |
| CENT 2015-0592 | Settlement | Paez | 2017 | $8K → $2K |
| CENT 2014-41M | Settlement | McCarthy | 2014 | $7K → $7K |
| CENT 2010-1022M | Settlement | Lesnick | 2011 | $7K → $3K |
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
Top causes
- HANDLING OF MATERIALS 33 non-fatal
- SLIP OR FALL OF PERSON 27 non-fatal
- HANDTOOLS (NONPOWERED) 23 non-fatal
- MACHINERY 8 non-fatal
- POWERED HAULAGE 8 non-fatal
- DISORDERS (REPEATED TRAUMA) 6 non-fatal
Incident timeline
2026
5
2025
3
2024
7
2023
2
2022
3
2021
2
2020
1
2019
8
2018
3
2017
4
2016
4
2015
6
2014
5
2012
3
2011
6
2010
1
2009
4
2008
1
2007
1
2006
3
2005
2
2004
6
2002
3
2001
1
2000
4
1999
4
1998
3
1997
3
1996
3
1995
3
1994
1
1990
1
1988
2
1984
1
1983
1
Mines on record
- Irock #3 MO
- Magruder Limestone-Troy Quarry MO
- Irock #5 MO
- Irock Port #2 MO
- IROCK Portable #1 MO
- Irock #4 MO
- Port-Cec #1 MO
- Foley Quarry MO
- Port #1 MO
- CEC Plant #2-Ser #99515 MO
- Ashley Quarry MO
For insurers, brokers, and safety consultants
Where Magruder Limestone 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.
The federal record itself stays free on this site. What costs money, and why.