Central Limestone Company Inc has $39K in proposed MSHA penalties and $256 outstanding across 4 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
5
Years on record
1991–2017
Latest incident
May 2017
Compliance record
MSHA citations since 2001
179
citations
30
significant & substantial
$39,346
proposed penalties
$37,176
paid to date
94% of proposed penalties paid to date, a $2,170 gap.
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.
179 citations across 1,162 inspection hours.
Source: MSHA inspections data, updated weekly.
Central Limestone Company Inc has $39K in proposed MSHA penalties and $256 outstanding across 4 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.
$39K
proposed penalties
$37K
current assessed
$37K
paid to date
$256
outstanding
179 assessments are final orders; 4 contested dockets.
Of $10K in penalties contested before the Commission, $8K was upheld in final decisions.
As of the most recent assessment on 2026-04-01.
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.
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.
12citations taken to the federal commission · 7% of citations on record
Settled
10 · 83%
Stood as issued
2 · 17%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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 9 decided S&S contests · industry: 79%
19%
Penalty reduction in decided contests
$10K proposed, $8K 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 2018-01-03.
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.
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: 2026-04-01
0%
of limit-tested samples over the exposure limit
19
samples
14
limit-tested
Most sampled contaminants
Nuisance dust, respirable, <1% Qtz9
Nuisance dust, total, <1% Qtz4
Respirable dust, <.1mg4
Quartz, respirable, >1% Qtz2
Show the individual readings (19)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-04-01
Nuisance dust, total, <1% Qtz
2.24
10
0.22
Front-end Loader Operator
2026-04-01
Nuisance dust, total, <1% Qtz
0.17
10
0.02
Truck Driver
2026-04-01
Nuisance dust, total, <1% Qtz
1.41
10
0.14
Dry Screen Plant Operator
2026-04-01
Nuisance dust, total, <1% Qtz
0.8
10
0.08
Lab Technician
2025-09-30
Respirable dust, <.1mg
0
Crusher Oper/Worker
2025-09-30
Quartz, respirable, >1% Qtz
0.25
Crusher Oper/Worker
2025-09-30
Respirable dust, <.1mg
0
Truck Driver
2025-09-30
Respirable dust, <.1mg
0
Utility Man
2017-09-20
Nuisance dust, respirable, <1% Qtz
0.2
10
0.02
Crusher Oper/Worker
2017-09-20
Nuisance dust, respirable, <1% Qtz
0.15
10
0.02
Front-end Loader Operator
2017-09-20
Nuisance dust, respirable, <1% Qtz
0.16
10
0.02
Cleanup Man
2010-10-14
Quartz, respirable, >1% Qtz
0.71
2.69
0.26
Truck Loader
2010-10-14
Nuisance dust, respirable, <1% Qtz
0.3
10
0.03
Crusher Oper/Worker
2004-08-03
Nuisance dust, respirable, <1% Qtz
0.5
10
0.05
Shovel Operator
2004-08-03
Nuisance dust, respirable, <1% Qtz
0.46
10
0.05
Crusher Oper/Worker
2004-08-03
Respirable dust, <.1mg
0
Laborer, Bullgang
2004-08-03
Nuisance dust, respirable, <1% Qtz
0.16
10
0.02
Laborer, Bullgang
2004-08-03
Nuisance dust, respirable, <1% Qtz
0.2
10
0.02
Truck Loader
2002-07-02
Nuisance dust, respirable, <1% Qtz
0.31
10
0.03
Washer Operator
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.
Central Limestone Company Inc 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
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
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 Illinois, metal and nonmetal mining averaged 1.41 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
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 *
0.00
0.00
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
18
2025
17
2024
17
2023
18
2022
17
2021
16
2020
17
2019
14
2018
18
2017
17
2016
11
2015
12
2014
11
2013
10
2012
10
2011
12
2010
18
2009
18
2008
15
2007
15
2006
15
2005
15
2004
16
2003
16
2002
17
2001
15
2000
15
Source: MSHA quarterly employment and production, updated weekly.
Central Limestone Company Inc sits in Kendall County, Illinois, 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.
Kendall County, Illinois · Population 135,053
0.0%
Mining share of county employment
$110,474
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
8,360
1
0
119.6
2026 Q1
5,353
2
0
373.6
2025 Q4
7,020
0
0
0.0
2025 Q3
10,022
0
0
0.0
2025 Q2
7,980
6
0
751.9
2025 Q1
6,627
2
0
301.8
2024 Q4
9,555
0
0
0.0
2024 Q3
9,564
2
0
209.1
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
9,992
0
0
0.0
2024 Q1
5,302
2
0
377.2
2023 Q4
9,795
0
0
0.0
2023 Q3
9,815
2
0
203.8
2023 Q2
9,305
0
0
0.0
2023 Q1
6,754
0
0
0.0
2022 Q4
10,141
0
0
0.0
2022 Q3
9,701
0
0
0.0
2022 Q2
11,035
2
0
181.2
2022 Q1
7,658
5
0
652.9
2021 Q4
8,870
0
0
0.0
2021 Q3
10,089
4
0
396.5
2021 Q2
8,129
0
0
0.0
2021 Q1
7,253
0
0
0.0
2020 Q4
9,193
1
0
108.8
2020 Q3
11,132
1
1
89.8
2020 Q2
9,997
0
0
0.0
2020 Q1
7,563
3
0
396.7
2019 Q4
8,748
0
0
0.0
2019 Q3
8,795
2
0
227.4
2019 Q2
9,052
0
0
0.0
2019 Q1
5,674
0
0
0.0
2018 Q4
7,160
12
1
1676.0
2018 Q3
11,095
0
0
0.0
2018 Q2
9,750
1
0
102.6
2018 Q1
7,304
1
0
136.9
2017 Q4
8,940
0
0
0.0
2017 Q3
11,048
12
1
1086.2
2017 Q2
10,265
7
3
681.9
2017 Q1
8,136
5
1
614.6
2016 Q4
6,194
0
0
0.0
2016 Q3
7,107
4
1
562.8
2016 Q2
6,119
0
0
0.0
2016 Q1
5,036
0
0
0.0
2015 Q4
5,433
4
1
736.2
2015 Q3
6,374
0
0
0.0
2015 Q2
6,757
3
0
444.0
2015 Q1
5,198
2
0
384.8
2014 Q4
6,061
0
0
0.0
2014 Q3
7,042
7
2
994.0
2014 Q2
6,499
2
0
307.7
2014 Q1
3,256
0
0
0.0
2013 Q4
4,681
0
0
0.0
2013 Q3
6,264
0
0
0.0
2013 Q2
5,916
5
0
845.2
2013 Q1
4,487
4
0
891.5
2012 Q4
5,758
0
0
0.0
2012 Q3
6,098
6
0
983.9
2012 Q2
4,511
0
0
0.0
2012 Q1
3,647
11
4
3016.2
2011 Q4
5,521
0
0
0.0
2011 Q3
5,448
0
0
0.0
2011 Q2
5,027
7
3
1392.5
2011 Q1
4,312
0
0
0.0
2010 Q4
8,072
1
0
123.9
2010 Q3
9,045
0
0
0.0
2010 Q2
6,391
0
0
0.0
2010 Q1
2,984
0
0
0.0
2009 Q4
10,109
0
0
0.0
2009 Q3
10,589
4
3
377.8
2009 Q2
7,978
0
0
0.0
2009 Q1
5,498
1
0
181.9
2008 Q4
8,558
0
0
0.0
2008 Q3
10,546
0
0
0.0
2008 Q2
7,932
0
0
0.0
2008 Q1
6,877
11
3
1599.5
2007 Q4
8,277
0
0
0.0
2007 Q3
11,000
0
0
0.0
2007 Q2
9,312
0
0
0.0
2007 Q1
7,312
0
0
0.0
2006 Q4
8,621
1
0
116.0
2006 Q3
11,059
0
0
0.0
2006 Q2
8,883
0
0
0.0
2006 Q1
7,596
3
0
394.9
2005 Q4
9,038
0
0
0.0
2005 Q3
10,454
3
0
287.0
2005 Q2
9,268
0
0
0.0
2005 Q1
7,775
0
0
0.0
2004 Q4
8,940
0
0
0.0
2004 Q3
10,932
8
1
731.8
2004 Q2
10,278
0
0
0.0
2004 Q1
6,012
0
0
0.0
2003 Q4
10,733
0
0
0.0
2003 Q3
10,049
0
0
0.0
2003 Q2
10,740
0
0
0.0
2003 Q1
5,569
0
0
0.0
2002 Q4
11,284
1
0
88.6
2002 Q3
9,637
0
0
0.0
2002 Q2
10,336
4
0
387.0
2002 Q1
6,391
0
0
0.0
2001 Q4
11,293
4
2
354.2
2001 Q3
9,580
0
0
0.0
2001 Q2
10,759
1
0
92.9
2001 Q1
5,734
0
0
0.0
2000 Q4
9,278
0
0
0.0
2000 Q3
9,752
0
0
0.0
2000 Q2
10,623
0
0
0.0
2000 Q1
6,677
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
5 on file
2017 · 1 incident
May 1, 2017IL · Metal/Non-Metalbeltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor riderHANDLING OF MATERIALS
While unfastening a bolt in order to remove a damaged steel fabricated guard, a sudden unexpected movement of the guard striking the miner's left hand middle finger causing a fracture and laceration of the distal and middle phalanx.
Employee stepped down from drill cab, released grip on hand hold as left foot touched ground, left ankle rolled over on a stone causing him to lose balance and fall landing on left shoulder. Left ankle swelling caused difficult walking. Left shoulder popped as it hit ground, causing it to be very sore and unable to lift arm without pain.
RIGHT HAND FINGERS #3, 4 & 5 WERE LACERATED, 19 TOTAL STITCHES, AND FINGER #4 WAS FRACTURED CAUSED BY PINCHING IN BETWEEN TWO 250 LB FEEDER PLATES. WHILE PRYING INTO POSITION, A PLATE MOVED IN UNEXPECTED DIRECTION SUDDENLY. EE HAD JUST WARNED CO-WORKER TO KEEP HIS HADN OUT OF PINCH POINT.
1997 · 1 incident
January 24, 1997IL · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
SHORTLY AFTER START OF AFTERNOON PRODUCTION OPERATION A LARGE OBLONG ROCK WAS STUCK IN PRIMARY JAW CRUSHER HOPPER NORMAL PROCEDURES WERE FOLLOWED BY CRUSHER OPERATOR WHO USED ELECTRIC HOIST & A CHAIN WRAPPED AROUND ROCK TO PULL THE 4ROCK UPONTO THE BUILDING FLOOR IN ORDER TO REPOSITION THE ROCK & REINTRODUCT IT INTO THE HOPPER HAVING PULLED THE ROCK ONTO EDGE OF BUILDING FLOOR VICT