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Hennepin Pit: 177 MSHA citations Metal/Non-Metal

Controlled by Steven R Nelson
Hennepin, Putnam County, IL  ·  Active
MSHA Mine ID: 1102658

Hennepin Pit has $42K in proposed MSHA penalties and $0 outstanding across 4 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
11
Years on record
1989–2020
Latest incident
Jun 2020
Compliance record
MSHA citations since 2001
177
citations
32
significant & substantial
$42,483
proposed penalties
$40,480
paid to date
95% of proposed penalties paid to date, a $2,003 gap.
Source: MSHA violations data, updated weekly.
See Tri-Con Materials, Inc.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2001
58
inspections on record
1,200
inspection hours
14.8
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.
177 citations across 1,200 inspection hours.
Source: MSHA inspections data, updated weekly.

Hennepin Pit has $42K in proposed MSHA penalties and $0 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.
$42K
proposed penalties
$40K
current assessed
$40K
paid to date
$0
outstanding
177 assessments are final orders; 4 contested dockets.
Of $5K in penalties contested before the Commission, $3K was upheld in final decisions.
As of the most recent assessment on 2025-01-23.
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.
18.1%
significant & substantial
12.4%
high negligence or reckless
18.1%
reasonably likely or greater
48.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 27.1% low, 60.5% moderate, 12.4% 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 · 4% of citations on record
  • Settled 6 · 86%
  • Vacated or withdrawn 1 · 14%
100%
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 1 decided S&S contests · industry: 79%
46%
Penalty reduction in decided contests
$5K proposed, $3K 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 2012-06-14.
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
LAKE 2012-9M Settlement Lesnick 2012 $2K → $745
LAKE 2012-690M Settlement Lesnick 2013 $2K → $1K
LAKE 2011-410M Settlement Lesnick 2011 $499 → $224
LAKE 2012-689M Settlement Lesnick 2013 $499 → $499
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: 2025-10-28
0%
of limit-tested samples over the exposure limit
13
samples
6
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg7
  • Arsenic fumes3
  • Beryllium fumes3
  • Cadmium oxide fumes3
Show the individual readings (49)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-10-28 Respirable dust, <.1mg 0 Cleanup Man
2025-10-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-06-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-06-30 Respirable dust, <.1mg 0 Washer Operator
2014-05-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-05-01 Respirable dust, <.1mg 0 Crusher Oper/Worker
2014-05-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-02-10 Lead fumes 0 450 0.00 Welder, etc.
2010-02-10 Magnesium oxide fumes 0.02 20 0.00 Welder, etc.
2010-02-10 Manganese fumes 0.06 5 0.01 Welder, etc.
2010-02-10 Molybdenum fumes 0 20 0.00 Welder, etc.
2010-02-10 Nickel fumes 0 3 0.00 Welder, etc.
2010-02-10 Vanadium fumes 0 50 0.00 Welder, etc.
2010-02-10 Zinc oxide fumes 0 10 0.00 Welder, etc.
2010-02-10 Arsenic fumes 0 1500 0.00 Welder, etc.
2010-02-10 Beryllium fumes 0 6 0.00 Welder, etc.
2010-02-10 Cadmium oxide fumes 0 100 0.00 Welder, etc.
2010-02-10 Chromium, insoluble 0.01 3 0.00 Welder, etc.
2010-02-10 Cobalt fumes 0 300 0.00 Welder, etc.
2010-02-10 Copper fumes 0 300 0.00 Welder, etc.
2010-02-10 Iron oxide fumes 0.16 20 0.01 Welder, etc.
2010-02-10 Lead fumes 0 450 0.00 Welder, etc.
2010-02-10 Magnesium oxide fumes 0.03 20 0.00 Welder, etc.
2010-02-10 Manganese fumes 0.05 5 0.01 Welder, etc.
2010-02-10 Molybdenum fumes 0 20 0.00 Welder, etc.
2010-02-10 Nickel fumes 0 3 0.00 Welder, etc.
2010-02-10 Vanadium fumes 0 50 0.00 Welder, etc.
2010-02-10 Zinc oxide fumes 0 10 0.00 Welder, etc.
2010-02-10 Arsenic fumes 0 500 0.00 Welder, etc.
2010-02-10 Beryllium fumes 0 2 0.00 Welder, etc.
2010-02-10 Arsenic fumes 0 1500 0.00 Welder, etc.
2010-02-10 Chromium, insoluble 0 1 0.00 Welder, etc.
2010-02-10 Cobalt fumes 0 100 0.00 Welder, etc.
2010-02-10 Copper fumes 0 100 0.00 Welder, etc.
2010-02-10 Iron oxide fumes 0.07 10 0.01 Welder, etc.
2010-02-10 Lead fumes 0 150 0.00 Welder, etc.
2010-02-10 Magnesium oxide fumes 0 10 0.00 Welder, etc.
2010-02-10 Manganese fumes 0.02 5 0.00 Welder, etc.
2010-02-10 Molybdenum fumes 0 10 0.00 Welder, etc.
2010-02-10 Nickel fumes 0 1 0.00 Welder, etc.
2010-02-10 Vanadium fumes 0 50 0.00 Welder, etc.
2010-02-10 Zinc oxide fumes 0 5 0.00 Welder, etc.
2010-02-10 Cadmium oxide fumes 0 100 0.00 Welder, etc.
2010-02-10 Beryllium fumes 0 6 0.00 Welder, etc.
2010-02-10 Cadmium oxide fumes 0 100 0.00 Welder, etc.
2010-02-10 Chromium, insoluble 0.08 3 0.03 Welder, etc.
2010-02-10 Cobalt fumes 0 300 0.00 Welder, etc.
2010-02-10 Copper fumes 0 300 0.00 Welder, etc.
2010-02-10 Iron oxide fumes 0.48 20 0.02 Welder, etc.
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.

Hennepin Pit 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 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 * 8.34 8.34 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. Weco Corp 1978 to 1985
  2. Tri-Con Materials, Inc. 1985 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 18
2025 16
2024 12
2023 15
2022 15
2021 14
2020 12
2019 13
2018 12
2017 12
2016 12
2015 12
2014 13
2013 11
2012 12
2011 12
2010 15
2009 15
2008 15
2007 13
2006 14
2005 12
2004 9
2003 9
2002 9
2001 8
2000 12
Source: MSHA quarterly employment and production, updated weekly.

Hennepin Pit sits in Putnam County, Illinois, where the Census mining category is 1.0% 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.
Putnam County, Illinois · Population 5,600
1.0%
Mining share of county employment
$77,526
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 7,170 0 0 0.0
2026 Q1 6,546 0 0 0.0
2025 Q4 6,775 0 0 0.0
2025 Q3 7,585 0 0 0.0
2025 Q2 9,358 0 0 0.0
2025 Q1 5,612 1 0 178.2
2024 Q4 5,618 0 0 0.0
2024 Q3 5,859 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 5,199 1 0 192.3
2024 Q1 3,341 0 0 0.0
2023 Q4 5,282 0 0 0.0
2023 Q3 7,457 0 0 0.0
2023 Q2 7,730 0 0 0.0
2023 Q1 5,712 1 0 175.1
2022 Q4 6,159 0 0 0.0
2022 Q3 8,035 1 0 124.5
2022 Q2 6,985 0 0 0.0
2022 Q1 4,602 0 0 0.0
2021 Q4 6,432 0 0 0.0
2021 Q3 8,862 0 0 0.0
2021 Q2 6,894 4 1 580.2
2021 Q1 3,617 0 0 0.0
2020 Q4 4,795 2 0 417.1
2020 Q3 6,118 0 0 0.0
2020 Q2 7,010 0 0 0.0
2020 Q1 6,067 0 0 0.0
2019 Q4 8,870 0 0 0.0
2019 Q3 8,205 0 0 0.0
2019 Q2 7,110 3 0 421.9
2019 Q1 4,876 0 0 0.0
2018 Q4 5,830 2 0 343.1
2018 Q3 6,909 4 0 579.0
2018 Q2 6,176 0 0 0.0
2018 Q1 4,801 0 0 0.0
2017 Q4 8,444 6 0 710.6
2017 Q3 6,544 0 0 0.0
2017 Q2 5,116 0 0 0.0
2017 Q1 4,640 2 0 431.0
2016 Q4 4,913 0 0 0.0
2016 Q3 7,422 0 0 0.0
2016 Q2 6,888 1 0 145.2
2016 Q1 5,151 0 0 0.0
2015 Q4 6,400 2 1 312.5
2015 Q3 6,981 0 0 0.0
2015 Q2 6,793 1 0 147.2
2015 Q1 4,711 0 0 0.0
2014 Q4 5,947 0 0 0.0
2014 Q3 8,053 15 1 1862.7
2014 Q2 7,613 19 1 2495.7
2014 Q1 3,753 0 0 0.0
2013 Q4 6,622 0 0 0.0
2013 Q3 7,604 0 0 0.0
2013 Q2 5,359 0 0 0.0
2013 Q1 3,261 0 0 0.0
2012 Q4 6,079 0 0 0.0
2012 Q3 7,033 4 1 568.7
2012 Q2 6,084 0 0 0.0
2012 Q1 3,982 3 1 753.4
2011 Q4 7,276 0 0 0.0
2011 Q3 6,264 7 1 1117.5
2011 Q2 6,977 0 0 0.0
2011 Q1 5,545 0 0 0.0
2010 Q4 7,920 13 1 1641.4
2010 Q3 9,630 4 2 415.4
2010 Q2 10,612 0 0 0.0
2010 Q1 6,491 2 0 308.1
2009 Q4 8,578 0 0 0.0
2009 Q3 10,642 27 15 2537.1
2009 Q2 9,209 0 0 0.0
2009 Q1 4,815 1 0 207.7
2008 Q4 7,765 0 0 0.0
2008 Q3 8,648 0 0 0.0
2008 Q2 8,587 3 0 349.4
2008 Q1 7,700 2 0 259.7
2007 Q4 8,312 0 0 0.0
2007 Q3 9,542 0 0 0.0
2007 Q2 7,400 0 0 0.0
2007 Q1 5,446 3 0 550.9
2006 Q4 7,112 0 0 0.0
2006 Q3 8,748 4 0 457.2
2006 Q2 8,241 0 0 0.0
2006 Q1 5,763 0 0 0.0
2005 Q4 6,181 6 1 970.7
2005 Q3 7,164 4 1 558.3
2005 Q2 7,019 0 0 0.0
2005 Q1 4,535 0 0 0.0
2004 Q4 5,234 0 0 0.0
2004 Q3 8,441 0 0 0.0
2004 Q2 5,608 0 0 0.0
2004 Q1 2,931 0 0 0.0
2003 Q4 4,304 6 0 1394.1
2003 Q3 5,641 0 0 0.0
2003 Q2 4,859 0 0 0.0
2003 Q1 1,504 0 0 0.0
2002 Q4 5,495 6 0 1091.9
2002 Q3 5,673 0 0 0.0
2002 Q2 6,112 0 0 0.0
2002 Q1 875 0 0 0.0
2001 Q4 5,362 0 0 0.0
2001 Q3 6,696 16 5 2389.5
2001 Q2 5,015 0 0 0.0
2001 Q1 0 0 0
2000 Q4 5,201 0 0 0.0
2000 Q3 6,470 0 0 0.0
2000 Q2 4,609 0 0 0.0
2000 Q1 500 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

11 on file

2020 · 1 incident

June 29, 2020 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Tri-Con Materials, Inc. · Over-exertion in pulling or pushing objects

EE was prying up on the bar to center the belt. The significant leveraging caused a strain. We are still awaiting the MRI to see about an actual injury.

2016 · 1 incident

June 7, 2016 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Tri-Con Materials, Inc. · Fall from machine

The miner was descending properly from loader to take a break. Turned around to start to come down from loader and fell backwards. Landed primarily on feet, causing both to be sprained. Also sprained left wrist falling back on it. Also hit head on shuttle vehicle below. Had hard hat on, so only had minor concussion.

1997 · 2 incidents

December 4, 1997 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Tri-Con Materials, Inc. · Caught in, under or between (Not Elsewhere Classified)

MOVING SCREEN WITH END LOADER AND HAND WAS PINCHED BETWEEN SCREEN BOX AND LOADER TIRE.

1995 · 3 incidents

August 17, 1995 IL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Tri-Con Materials, Inc. · Fall from machine

EMPLOYEE WAS CLIMBING UP A LADDER TO START THE CRUSHER, HE HAD MUD ON THE BOTTOM OF HIS SHOE AND SLIPPED OFF THE LADDER. HE SPRAINED HIS ANKLE.

August 11, 1995 IL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Tri-Con Materials, Inc. · Over-exertion in wielding or throwing objects

EMPLOYEE WAS CLEANING OUT ROCKS, GRAVEL AND CLAY THAT WAS JAMMED UP IN THE CONE CRUSHER. AS HE WAS SWINGING THE PRYBAR HE INJURED HIS SHOLDER (SPRAINED ROTATOR CUFF.

June 28, 1995 IL · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Tri-Con Materials, Inc. · Struck by flying object

EE WAS CHANNGING TABLE SHOES ON A CRUSHER. WHIEL USING THE SLEDGE HAMMER, PART OFTHE HAMMER HEAD CHIPPED OFF AND WEN INTO HIS LEG.

1994 · 1 incident

April 26, 1994 IL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Tri-Con Materials, Inc. · Fall from machine

EE WAS GREASING & FUELING THE ENDLOADER AS HE WAS COMING DOWN THE STEPS OF THE ENDLOADER HE STEPPED OFF OF THE LAST STEP WRONG

1993 · 2 incidents

November 24, 1993 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Tri-Con Materials, Inc. · Struck by falling object

EE WAS CRUSHING GRAVEL AND A LARGE ROCK DROPPED ON HIS RIGHT FOREFINGER.

April 27, 1993 IL · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STEPPING OR KNEELING ON OBJECT
Tri-Con Materials, Inc. · Struck against stationary object

INJURED WAS INSTALLING A BELT ON A CONVEYOR. AS HE PULLED ON THE BELT HE SLIPPED ON SOME LOOSE ROCKS AND TWISTED HIS KNEE. WE DO NOT KNOW AT THIS TIME HOSE SERIOUS THE INJURY IS.

1989 · 1 incident

January 20, 1989 IL · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Tri-Con Materials, Inc. · Struck by... (Not Elsewhere Classified)

JAW CRUSHER OPER STANDING NEAR GUARD RAIL AT TOP OF JAW WHEN HARD ROUND ROCK ENTERED CRUSHING CHAMBE.BECAUSE OF HARD,SMOOTH NATURE OF ROCK IT WAS FORCED UPWARD STRIKING OPER LITTLE FINGER LEFT HAND SEVERING END OF FINGER.