Mining Incidents

PORT-CEC #1: 61 MSHA citations Metal/Non-Metal

Controlled by Mark Magruder
Lake Ozark, Miller County, MO  ·  Abandoned
MSHA Mine ID: 2302387

PORT-CEC #1 has $9K in proposed MSHA penalties and $654 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
4
Years on record
2015–2024
Latest incident
Feb 2024
Compliance record
MSHA citations since 2009
61
citations
18
significant & substantial
$8,667
proposed penalties
$7,799
paid to date
90% of proposed penalties paid to date, a $868 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2009
29
inspections on record
348
inspection hours
n/a
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.
Rate withheld: 348 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

PORT-CEC #1 has $9K in proposed MSHA penalties and $654 outstanding across 2 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$9K
proposed penalties
$8K
current assessed
$8K
paid to date
$654
outstanding
61 assessments are final orders; 2 contested dockets.
Of $469 in penalties contested before the Commission, $137 was upheld in final decisions.
As of the most recent assessment on 2025-06-11.
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.
29.5%
significant & substantial
9.8%
high negligence or reckless
29.5%
reasonably likely or greater
67.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 21.3% low, 68.9% moderate, 9.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, 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 citations taken to the federal commission · 3% of citations on record
  • Settled 1 · 50%
  • Vacated or withdrawn 1 · 50%
0%
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 2 decided S&S contests · industry: 79%
71%
Penalty reduction in decided contests
$469 proposed, $137 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 2020-05-17.
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 mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
CENT 2020-0146 Settlement Rae 2020 $351 → $137
CENT 2018-0445 Withdrawal Moran 2019 $118 → $0
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
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: 2021-10-13, 4 years ago
0%
of limit-tested samples over the exposure limit
16
samples
8
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg7
  • Quartz, respirable, >1% Qtz5
  • Nuisance dust, respirable, <1% Qtz2
  • Nuisance dust, total, <1% Qtz2
Show the individual readings (16)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-10-13 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-10-13 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Front-end Loader Operator
2020-03-11 Quartz, respirable, >1% Qtz 0.42 1.15 0.37 Front-end Loader Operator
2020-03-11 Quartz, respirable, >1% Qtz 0.65 Front-end Loader Operator
2018-07-11 Nuisance dust, total, <1% Qtz 0.19 10 0.02 Front-end Loader Operator
2018-07-11 Nuisance dust, total, <1% Qtz 0 10 0.00 Front-end Loader Operator
2014-03-06 Quartz, respirable, >1% Qtz 0.39 1.06 0.37 Front-end Loader Operator
2014-03-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-03-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-03-06 Quartz, respirable, >1% Qtz 0.26 1.9 0.14 Truck Driver
2012-03-21 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Front-end Loader Operator
2012-03-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-03-21 Respirable dust, <.1mg 0 Crusher Oper/Worker
2009-12-01 Quartz, respirable, >1% Qtz 0.52 1.28 0.41 Front-end Loader Operator
2009-12-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-12-01 Respirable dust, <.1mg 0 Utility Man
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.
Ownership history
  1. Magruder Limestone Co Inc 2008 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2025 0
2024 3
2023 4
2022 5
2021 4
2020 4
2019 3
2018 4
2017 6
2016 12
2015 5
2014 5
2013 10
2012 12
2011 14
2010 23
2009 7
2008 0
Source: MSHA quarterly employment and production, updated weekly.

PORT-CEC #1 sits in Miller County, Missouri, where the Census mining category is 0.0% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Miller County, Missouri · Population 25,081
0.0%
Mining share of county employment
$55,172
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q3 0 0 0
2024 Q1 1,157 2 0 1728.6
2023 Q4 1,652 0 0 0.0
2023 Q3 1,471 9 0 6118.3
2023 Q2 2,139 0 0 0.0
2023 Q1 2,192 0 0 0.0
2022 Q4 2,441 0 0 0.0
2022 Q3 1,927 0 0 0.0
Show 51 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2022 Q2 1,908 0 0 0.0
2022 Q1 1,655 0 0 0.0
2021 Q4 2,010 8 0 3980.1
2021 Q3 1,980 0 0 0.0
2021 Q2 2,453 0 0 0.0
2021 Q1 1,337 0 0 0.0
2020 Q4 1,844 4 2 2169.2
2020 Q3 1,596 0 0 0.0
2020 Q2 1,905 0 0 0.0
2020 Q1 1,552 1 0 644.3
2019 Q4 2,381 0 0 0.0
2019 Q3 345 0 0 0.0
2019 Q2 325 0 0 0.0
2019 Q1 437 0 0 0.0
2018 Q4 2,249 0 0 0.0
2018 Q3 2,116 0 0 0.0
2018 Q2 2,365 0 0 0.0
2018 Q1 1,718 0 0 0.0
2017 Q4 2,574 0 0 0.0
2017 Q3 4,288 0 0 0.0
2017 Q2 1,933 0 0 0.0
2016 Q1 820 0 0 0.0
2015 Q4 3,357 0 0 0.0
2015 Q3 3,819 0 0 0.0
2015 Q2 3,423 3 1 876.4
2015 Q1 2,429 2 1 823.4
2014 Q4 2,215 0 0 0.0
2014 Q3 3,230 0 0 0.0
2014 Q2 2,443 1 0 409.3
2014 Q1 1,909 2 1 1047.7
2013 Q4 2,277 0 0 0.0
2013 Q3 3,634 0 0 0.0
2013 Q2 2,320 5 2 2155.2
2013 Q1 2,247 3 2 1335.1
2012 Q4 2,297 0 0 0.0
2012 Q3 2,017 0 0 0.0
2012 Q2 2,845 3 1 1054.5
2012 Q1 2,232 0 0 0.0
2011 Q4 3,381 3 1 887.3
2011 Q3 1,681 0 0 0.0
2011 Q2 1,714 1 1 583.4
2011 Q1 1,376 0 0 0.0
2010 Q4 1,659 2 1 1205.5
2010 Q3 3,930 0 0 0.0
2010 Q2 3,231 0 0 0.0
2010 Q1 4,020 0 0 0.0
2009 Q4 1,855 5 2 2695.4
2009 Q3 2,239 0 0 0.0
2009 Q2 1,650 0 0 0.0
2009 Q1 1,796 0 0 0.0
2008 Q4 0 0 0
No fatalities recorded at this mine.

Reportable incidents

4 on file

2024 · 1 incident

February 26, 2024 MO · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDTOOLS (NONPOWERED)
Magruder Limestone Co Inc · Over-exertion (Not Elsewhere Classified)

Employee was using a pry bar to lift heavy pieces of steal, the pry bar slipped out, causing over extension of shoulder.

2022 · 1 incident

June 22, 2022 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Magruder Limestone Co Inc · Caught in, under or between a moving and a stationary object

Right thumb got caught between mounting plates while installing (replacement) speed reducer on #1 stacker

2019 · 1 incident

November 4, 2019 MO · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Magruder Limestone Co Inc · Struck by... (Not Elsewhere Classified)

Employee placed hand between clamp while repairing a conveyor belt. Clamp swung around and struck right middle finger causing avulsion to fingernail.

2015 · 1 incident

May 18, 2015 MO · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Magruder Limestone Co Inc · Over-exertion in lifting objects

Removing rock from impactor. Lifting a rock that cause the shoulder to pop and cause pain.