CMI Marengo Facility has $31K in proposed MSHA penalties and $0 outstanding across 6 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
2
Years on record
2017
Latest incident
Jun 2017
Compliance record
MSHA citations since 2000
164
citations
33
significant & substantial
$30,884
proposed penalties
$27,143
paid to date
88% of proposed penalties paid to date, a $3,741 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.
Rate withheld: 895 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
CMI Marengo Facility has $31K in proposed MSHA penalties and $0 outstanding across 6 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.
$31K
proposed penalties
$27K
current assessed
$27K
paid to date
$0
outstanding
164 assessments are final orders; 6 contested dockets.
Of $8K in penalties contested before the Commission, $5K was upheld in final decisions.
As of the most recent assessment on 2025-09-04.
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.
26citations taken to the federal commission · 16% of citations on record
Settled
20 · 77%
Stood as issued
6 · 23%
40%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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 10 decided S&S contests · industry: 79%
45%
Penalty reduction in decided contests
$8K proposed, $5K 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 2016-07-26.
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: 2018-06-27, 8 years ago
0%
of limit-tested samples over the exposure limit
19
samples
11
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz9
Respirable dust, <.1mg5
Unlisted Particulate, respirable, <1% Qtz3
Nuisance dust, total, <1% Qtz2
Show the individual readings (19)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2018-06-27
Respirable dust, <.1mg
0
Laborer, Bullgang
2018-06-27
Respirable dust, <.1mg
0
Cleanup Man
2014-10-15
Respirable dust, <.1mg
0
Laborer, Bullgang
2014-10-15
Unlisted Particulate, respirable, <1% Qtz
0.16
Cleanup Man
2014-10-15
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-06-29
Unlisted Particulate, respirable, <1% Qtz
0.2
Dragline Operator
2010-06-29
Unlisted Particulate, respirable, <1% Qtz
0.16
Mechanic
2008-06-24
Quartz, respirable, >1% Qtz
0.18
0.92
0.20
Dragline Operator
2008-06-24
Quartz, respirable, >1% Qtz
0.14
1.03
0.14
Supervisor, Co. Official
2008-06-24
Quartz, respirable, >1% Qtz
0.29
1.52
0.19
Laborer, Bullgang
2008-06-24
Nuisance dust, total, <1% Qtz
2.9
10
0.29
Front-end Loader Operator
2008-06-24
Nuisance dust, total, <1% Qtz
2.22
10
0.22
Laborer, Bullgang
2004-10-20
Quartz, respirable, >1% Qtz
0.15
1.2
0.13
Crusher Oper/Worker
2004-10-20
Respirable dust, <.1mg
0
Laborer, Bullgang
2004-10-20
Quartz, respirable, >1% Qtz
0.2
1.49
0.13
Crusher Oper/Worker
2003-05-29
Quartz, respirable, >1% Qtz
0.75
1.29
0.58
Front-end Loader Operator
2003-05-29
Quartz, respirable, >1% Qtz
0.34
1.79
0.19
Mechanic
2003-05-29
Quartz, respirable, >1% Qtz
0.25
1.19
0.21
Laborer, Bullgang
2003-05-29
Quartz, respirable, >1% Qtz
0.13
0.9
0.14
Front-end Loader 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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
9
2025
6
2024
7
2023
7
2022
8
2021
6
2020
7
2019
9
2018
10
2017
7
2016
5
2015
7
2014
3
2013
0
2012
2
2011
3
2010
2
2009
3
2008
3
2007
4
2006
5
2005
3
2004
4
2003
4
2002
4
2001
4
2000
5
Source: MSHA quarterly employment and production, updated weekly.
CMI Marengo Facility sits in McHenry County, Illinois, where the Census mining category is 0.1% 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.
McHenry County, Illinois · Population 311,366
0.1%
Mining share of county employment
$102,836
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
1,348
0
0
0.0
2026 Q1
268
0
0
0.0
2025 Q4
1,569
0
0
0.0
2025 Q3
1,908
9
1
4717.0
2025 Q2
1,801
0
0
0.0
2025 Q1
153
0
0
0.0
2024 Q4
1,419
0
0
0.0
2024 Q3
2,476
3
0
1211.6
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
3,063
0
0
0.0
2024 Q1
1,577
0
0
0.0
2023 Q4
3,336
0
0
0.0
2023 Q3
3,888
0
0
0.0
2023 Q2
3,338
5
1
1497.9
2023 Q1
356
0
0
0.0
2022 Q4
4,105
0
0
0.0
2022 Q3
3,846
2
0
520.0
2022 Q2
4,299
0
0
0.0
2022 Q1
545
0
0
0.0
2021 Q4
2,721
0
0
0.0
2021 Q3
3,251
0
0
0.0
2021 Q2
2,912
0
0
0.0
2021 Q1
301
0
0
0.0
2020 Q4
2,431
0
0
0.0
2020 Q3
3,280
0
0
0.0
2020 Q2
2,688
0
0
0.0
2020 Q1
850
0
0
0.0
2019 Q4
3,210
2
0
623.1
2019 Q3
3,195
0
0
0.0
2019 Q2
4,769
0
0
0.0
2019 Q1
1,997
0
0
0.0
2018 Q4
3,510
1
0
284.9
2018 Q3
4,345
0
0
0.0
2018 Q2
5,525
2
0
362.0
2018 Q1
2,322
0
0
0.0
2017 Q4
2,754
0
0
0.0
2017 Q3
4,383
2
2
456.3
2017 Q2
4,459
0
0
0.0
2017 Q1
385
0
0
0.0
2016 Q4
1,985
23
5
11586.9
2016 Q3
3,605
0
0
0.0
2016 Q2
2,774
7
2
2523.4
2016 Q1
669
0
0
0.0
2015 Q4
2,269
6
1
2644.3
2015 Q3
2,478
4
1
1614.2
2015 Q2
2,420
0
0
0.0
2015 Q1
583
0
0
0.0
2014 Q4
937
3
0
3201.7
2014 Q3
2,389
6
0
2511.5
2014 Q2
1,464
2
2
1366.1
2014 Q1
226
4
1
17699.1
2013 Q4
0
0
0
2013 Q3
0
0
0
2013 Q2
0
0
0
2013 Q1
0
0
0
2012 Q4
794
6
2
7556.7
2012 Q3
1,125
0
0
0.0
2012 Q2
562
2
0
3558.7
2012 Q1
504
0
0
0.0
2011 Q4
1,335
5
0
3745.3
2011 Q3
1,623
0
0
0.0
2011 Q2
1,028
0
0
0.0
2011 Q1
0
0
0
2010 Q4
1,296
1
0
771.6
2010 Q3
986
0
0
0.0
2010 Q2
846
13
1
15366.4
2010 Q1
442
0
0
0.0
2009 Q4
2,137
0
0
0.0
2009 Q3
1,795
7
3
3899.7
2009 Q2
1,114
0
0
0.0
2009 Q1
425
0
0
0.0
2008 Q4
1,616
0
0
0.0
2008 Q3
574
0
0
0.0
2008 Q2
702
0
0
0.0
2008 Q1
425
0
0
0.0
2007 Q4
1,950
1
0
512.8
2007 Q3
2,311
4
2
1730.9
2007 Q2
1,365
0
0
0.0
2007 Q1
390
0
0
0.0
2006 Q4
650
0
0
0.0
2006 Q3
3,641
0
0
0.0
2006 Q2
3,589
0
0
0.0
2006 Q1
1,245
0
0
0.0
2005 Q4
1,964
4
1
2036.7
2005 Q3
3,788
0
0
0.0
2005 Q2
2,089
0
0
0.0
2005 Q1
407
0
0
0.0
2004 Q4
2,567
5
1
1947.8
2004 Q3
813
0
0
0.0
2004 Q2
2,776
0
0
0.0
2004 Q1
508
3
0
5905.5
2003 Q4
2,089
0
0
0.0
2003 Q3
2,730
0
0
0.0
2003 Q2
2,939
7
1
2381.8
2003 Q1
104
0
0
0.0
2002 Q4
344
0
0
0.0
2002 Q3
2,556
0
0
0.0
2002 Q2
2,170
3
0
1382.5
2002 Q1
983
0
0
0.0
2001 Q4
2,603
15
4
5762.6
2001 Q3
2,481
0
0
0.0
2001 Q2
1,819
0
0
0.0
2001 Q1
1,155
1
0
865.8
2000 Q4
1,825
0
0
0.0
2000 Q3
2,559
4
1
1563.1
2000 Q2
2,281
0
0
0.0
2000 Q1
1,019
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
2 on file
2017 · 2 incidents
June 23, 2017IL · Metal/Non-Metalminer, prospector, necPOWERED HAULAGE
Miner was out on pontoon boat working on putting last piece of dredge together. Miner was putting flange bolts in and miners hand slipped in between the two flanges when flanges came together smashing miners left hand. Miner was taken to the hospital immediately. EE fractured pinky finger. Miner was not working alone.
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