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Portable Plant #1: 154 MSHA citations Metal/Non-Metal

Controlled by Daniel Marcus Frost
Mexia, Limestone County, TX  ·  Active
MSHA Mine ID: 4103721

Portable Plant #1 has $41K in proposed MSHA penalties and $4K outstanding across 5 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
2
Years on record
2008–2022
Latest incident
Aug 2022
Compliance record
MSHA citations since 2000
154
citations
38
significant & substantial
$40,524
proposed penalties
$35,438
paid to date
87% of proposed penalties paid to date, a $5,086 gap.
Source: MSHA violations data, updated weekly.
See Frost Crushed Stone Company Inc's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
75
inspections on record
1,179
inspection hours
13.1
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.
154 citations across 1,179 inspection hours.
Source: MSHA inspections data, updated weekly.

Portable Plant #1 has $41K in proposed MSHA penalties and $4K outstanding across 5 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.
$41K
proposed penalties
$40K
current assessed
$35K
paid to date
$4K
outstanding
151 assessments are final orders; 5 contested dockets.
Of $14K in penalties contested before the Commission, $6K was upheld in final decisions.
As of the most recent assessment on 2026-04-28.
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.
25.0%
significant & substantial
18.5%
high negligence or reckless
25.9%
reasonably likely or greater
37.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.7% none, 17.8% low, 63.0% moderate, 18.5% 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.
7 citations taken to the federal commission · 5% of citations on record
  • Settled 4 · 57%
  • Stood as issued 2 · 29%
  • Vacated or withdrawn 1 · 14%
67%
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 3 decided S&S contests · industry: 79%
55%
Penalty reduction in decided contests
$14K proposed, $6K 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 2024-02-12.
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 2023-0270 Vacate Manning 2024 $7K → $0
CENT 2024-0135 Default 2024 $5K → $5K
CENT 2018-0262 Settlement Feldman 2018 $2K → $2K
CENT 2011-732M Settlement Lesnick 2011 $425 → $100
CENT 2016-0088 Dismissal Miller 2016 $100 → $100
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: 2025-04-15
0%
of limit-tested samples over the exposure limit
24
samples
5
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg15
  • Unlisted Particulate, respirable, <1% Qtz4
  • Nuisance dust, respirable, <1% Qtz3
  • Quartz, respirable, >1% Qtz2
Show the individual readings (24)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-04-15 Respirable dust, <.1mg 0 Bulldozer Operator
2025-04-15 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2025-04-15 Respirable dust, <.1mg 0 Truck Driver
2025-04-15 Respirable dust, <.1mg 0 Front-end Loader Operator
2024-04-30 Nuisance dust, respirable, <1% Qtz 0.23 10 0.02 Truck Driver
2024-04-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2024-04-30 Respirable dust, <.1mg 0 Backhoe Operator
2024-04-30 Respirable dust, <.1mg 0 Truck Driver
2021-06-08 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-06-08 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-10-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-10-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-07-18 Respirable dust, <.1mg 0 Jackhammer Operator
2012-07-18 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-07-18 Quartz, respirable, >1% Qtz 0.13 0.54 0.24 Crusher Oper/Worker
2005-04-06 Nuisance dust, respirable, <1% Qtz 0.15 10 0.02 Jackhammer Operator
2005-04-06 Quartz, respirable, >1% Qtz 0.14 1.61 0.09 Truck Driver
2005-04-06 Nuisance dust, respirable, <1% Qtz 0.2 10 0.02 Cleanup Man
2005-04-06 Respirable dust, <.1mg 0 Cleanup Man
2000-12-06 Unlisted Particulate, respirable, <1% Qtz 0.16 Truck Driver
2000-12-06 Unlisted Particulate, respirable, <1% Qtz 0.18 Truck Driver
2000-12-06 Unlisted Particulate, respirable, <1% Qtz 0.44 Front-end Loader Operator
2000-12-06 Respirable dust, <.1mg 0 Crusher Oper/Worker
2000-12-06 Unlisted Particulate, respirable, <1% Qtz 0.14 Laborer, Bullgang
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.

Portable Plant #1 recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

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.
0.00
total case rate
0.00
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.
In Texas, metal and nonmetal mining averaged 1.17 cases per 100 workers that year.
Year total case rate days-away fatal
2025 0.00 0.00 0.000
2024 0.00 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 2.27 2.27 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 0.00 0.00 0.000
2018 * 0.00 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.
Ownership history
  1. Frost Crushed Stone Company Inc 1992 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 48
2025 49
2024 37
2023 29
2022 31
2021 29
2020 29
2019 31
2018 28
2017 30
2016 30
2015 34
2014 28
2013 28
2012 23
2011 21
2010 30
2009 29
2008 50
2007 49
2006 42
2005 32
2004 30
2003 27
2002 23
2001 25
2000 15
Source: MSHA quarterly employment and production, updated weekly.

Portable Plant #1 sits in Limestone County, Texas, where the Census mining category is 3.1% 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.
Limestone County, Texas · Population 22,185
3.1%
Mining share of county employment
$58,109
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
2026 Q2 33,735 4 0 118.6
2026 Q1 34,008 1 1 29.4
2025 Q4 33,020 3 0 90.9
2025 Q3 33,735 0 0 0.0
2025 Q2 34,450 1 0 29.0
2025 Q1 35,875 0 0 0.0
2024 Q4 35,880 1 0 27.9
2024 Q3 20,930 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 23,075 0 0 0.0
2024 Q1 23,075 3 0 130.0
2023 Q4 20,930 0 0 0.0
2023 Q3 16,380 3 1 183.2
2023 Q2 20,930 2 0 95.6
2023 Q1 23,075 0 0 0.0
2022 Q4 22,295 2 0 89.7
2022 Q3 20,215 0 0 0.0
2022 Q2 22,360 0 0 0.0
2022 Q1 23,218 0 0 0.0
2021 Q4 20,280 0 0 0.0
2021 Q3 20,930 0 0 0.0
2021 Q2 19,838 1 0 50.4
2021 Q1 19,565 1 0 51.1
2020 Q4 18,850 0 0 0.0
2020 Q3 20,215 3 1 148.4
2020 Q2 20,280 0 0 0.0
2020 Q1 21,005 0 0 0.0
2019 Q4 19,630 0 0 0.0
2019 Q3 20,995 0 0 0.0
2019 Q2 23,205 0 0 0.0
2019 Q1 21,775 0 0 0.0
2018 Q4 17,485 0 0 0.0
2018 Q3 20,215 1 0 49.5
2018 Q2 20,215 0 0 0.0
2018 Q1 19,500 0 0 0.0
2017 Q4 19,500 6 2 307.7
2017 Q3 20,215 0 0 0.0
2017 Q2 21,645 3 2 138.6
2017 Q1 23,075 2 1 86.7
2016 Q4 20,215 0 0 0.0
2016 Q3 21,645 2 0 92.4
2016 Q2 18,785 0 0 0.0
2016 Q1 21,645 0 0 0.0
2015 Q4 20,930 3 1 143.3
2015 Q3 25,870 1 0 38.7
2015 Q2 24,050 0 0 0.0
2015 Q1 23,725 1 0 42.1
2014 Q4 23,010 0 0 0.0
2014 Q3 20,020 0 0 0.0
2014 Q2 18,018 0 0 0.0
2014 Q1 18,070 1 0 55.3
2013 Q4 17,810 0 0 0.0
2013 Q3 21,593 0 0 0.0
2013 Q2 19,500 1 0 51.3
2013 Q1 20,150 0 0 0.0
2012 Q4 20,150 2 1 99.3
2012 Q3 17,355 2 0 115.2
2012 Q2 14,495 0 0 0.0
2012 Q1 12,480 1 0 80.1
2011 Q4 13,780 0 0 0.0
2011 Q3 11,830 2 0 169.1
2011 Q2 12,350 0 0 0.0
2011 Q1 19,500 1 0 51.3
2010 Q4 16,900 0 0 0.0
2010 Q3 23,010 3 0 130.4
2010 Q2 21,645 0 0 0.0
2010 Q1 20,930 2 0 95.6
2009 Q4 17,030 0 0 0.0
2009 Q3 16,965 0 0 0.0
2009 Q2 18,330 1 0 54.6
2009 Q1 22,880 0 0 0.0
2008 Q4 27,885 0 0 0.0
2008 Q3 41,730 0 0 0.0
2008 Q2 45,045 8 2 177.6
2008 Q1 35,750 0 0 0.0
2007 Q4 35,035 4 0 114.2
2007 Q3 33,800 0 0 0.0
2007 Q2 36,010 0 0 0.0
2007 Q1 33,930 5 0 147.4
2006 Q4 33,930 0 0 0.0
2006 Q3 35,360 0 0 0.0
2006 Q2 25,350 0 0 0.0
2006 Q1 22,100 1 0 45.2
2005 Q4 21,450 0 0 0.0
2005 Q3 21,400 0 0 0.0
2005 Q2 21,125 3 0 142.0
2005 Q1 21,125 0 0 0.0
2004 Q4 19,825 2 0 100.9
2004 Q3 18,499 0 0 0.0
2004 Q2 23,550 2 0 84.9
2004 Q1 16,725 0 0 0.0
2003 Q4 19,490 0 0 0.0
2003 Q3 16,549 0 0 0.0
2003 Q2 16,888 0 0 0.0
2003 Q1 12,463 0 0 0.0
2002 Q4 9,945 3 0 301.7
2002 Q3 13,623 0 0 0.0
2002 Q2 18,519 10 4 540.0
2002 Q1 12,613 0 0 0.0
2001 Q4 15,317 16 6 1044.6
2001 Q3 13,989 6 2 428.9
2001 Q2 11,614 0 0 0.0
2001 Q1 8,698 0 0 0.0
2000 Q4 8,455 12 5 1419.3
2000 Q3 10,380 0 0 0.0
2000 Q2 8,710 1 0 114.8
2000 Q1 8,822 17 9 1927.0
No fatalities recorded at this mine.

Reportable incidents

2 on file

2022 · 1 incident

August 2, 2022 TX · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Frost Crushed Stone Company Inc · Fall from machine

Employee was in a manlift approximately 2 feet off of the ground cutting off a piece of metal. Once the cut was completed the employee pushed the cut piece away from them and employee said something hung their glove and pulled them out of the manlift. Employee landed on their shoulder separating it

2008 · 1 incident

May 6, 2008 TX · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider POWERED HAULAGE
Frost Crushed Stone Company Inc · Caught in, under or between running or meshing objects

Climbed up on side of crusher while it was operating, caught arm in head pulley. It dismembered arm at elbow.