Mining Incidents

Millersburg Quarry Metal/Non-Metal

Millersburg, Callaway County, MO  ·  Intermittent
MSHA Mine ID: 2300160

Millersburg Quarry has $18K in proposed MSHA penalties and $0 outstanding across 10 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
36
Years on record
1986–2024
Latest incident
Feb 2024
Compliance record
MSHA citations since 2000
107
citations
21
significant & substantial
$18,427
proposed penalties
$16,962
paid to date
92% of proposed penalties paid to date, a $1,465 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
65
inspections on record
844
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: 844 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Millersburg Quarry has $18K in proposed MSHA penalties and $0 outstanding across 10 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.
$18K
proposed penalties
$17K
current assessed
$17K
paid to date
$0
outstanding
106 assessments are final orders; 10 contested dockets.
As of the most recent assessment on 2026-03-31.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 Q4 1,324 0 0 0.0
2025 Q3 1,120 0 0 0.0
2025 Q2 1,159 0 0 0.0
2025 Q1 1,055 0 0 0.0
2024 Q4 1,128 2 0 1773.0
2024 Q3 1,324 0 0 0.0
2024 Q2 1,260 0 0 0.0
2024 Q1 1,170 2 0 1709.4
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 1,127 0 0 0.0
2023 Q3 1,366 0 0 0.0
2023 Q2 1,249 2 0 1601.3
2023 Q1 1,060 0 0 0.0
2022 Q4 633 0 0 0.0
2022 Q3 625 0 0 0.0
2022 Q2 1,018 0 0 0.0
2022 Q1 1,144 0 0 0.0
2021 Q4 933 0 0 0.0
2021 Q3 1,158 0 0 0.0
2021 Q2 4,918 0 0 0.0
2021 Q1 2,957 0 0 0.0
2020 Q4 2,844 0 0 0.0
2020 Q3 4,458 2 0 448.6
2020 Q2 4,585 0 0 0.0
2020 Q1 3,257 3 0 921.1
2019 Q4 6,254 0 0 0.0
2019 Q3 8,615 0 0 0.0
2019 Q2 7,322 5 0 682.9
2019 Q1 4,569 0 0 0.0
2018 Q4 6,752 2 2 296.2
2018 Q3 7,414 1 1 134.9
2018 Q2 5,474 0 0 0.0
2018 Q1 4,086 1 0 244.7
2017 Q4 14,034 0 0 0.0
2017 Q3 12,187 1 0 82.1
2017 Q2 10,181 0 0 0.0
2017 Q1 10,481 1 0 95.4
2016 Q4 11,439 1 0 87.4
2016 Q3 12,336 1 0 81.1
2016 Q2 10,373 2 1 192.8
2016 Q1 7,301 4 3 547.9
2015 Q4 7,054 0 0 0.0
2015 Q3 12,147 0 0 0.0
2015 Q2 7,917 6 1 757.9
2015 Q1 5,886 0 0 0.0
2014 Q4 6,535 4 0 612.1
2014 Q3 6,778 0 0 0.0
2014 Q2 9,047 0 0 0.0
2014 Q1 4,411 2 0 453.4
2013 Q4 5,070 0 0 0.0
2013 Q3 6,737 0 0 0.0
2013 Q2 6,592 0 0 0.0
2013 Q1 3,304 5 0 1513.3
2012 Q4 3,630 0 0 0.0
2012 Q3 6,913 0 0 0.0
2012 Q2 5,827 0 0 0.0
2012 Q1 7,030 2 1 284.5
2011 Q4 6,658 0 0 0.0
2011 Q3 6,756 0 0 0.0
2011 Q2 2,350 2 0 851.1
2011 Q1 3,833 0 0 0.0
2010 Q4 7,980 0 0 0.0
2010 Q3 5,456 0 0 0.0
2010 Q2 6,446 0 0 0.0
2010 Q1 4,603 0 0 0.0
2009 Q4 5,007 6 3 1198.3
2009 Q3 6,574 0 0 0.0
2009 Q2 5,518 1 0 181.2
2009 Q1 3,686 0 0 0.0
2008 Q4 4,159 5 3 1202.2
2008 Q3 9,466 0 0 0.0
2008 Q2 8,660 3 1 346.4
2008 Q1 5,523 0 0 0.0
2007 Q4 7,053 1 1 141.8
2007 Q3 8,084 0 0 0.0
2007 Q2 6,239 1 0 160.3
2007 Q1 6,150 0 0 0.0
2006 Q4 7,080 2 0 282.5
2006 Q3 9,167 8 1 872.7
2006 Q2 12,848 0 0 0.0
2006 Q1 6,480 0 0 0.0
2005 Q4 6,419 1 0 155.8
2005 Q3 2,770 0 0 0.0
2005 Q2 18,111 10 2 552.2
2005 Q1 8,825 0 0 0.0
2004 Q4 6,030 3 0 497.5
2004 Q3 7,086 0 0 0.0
2004 Q2 6,663 5 1 750.4
2004 Q1 1,118 1 0 894.5
2003 Q4 6,545 0 0 0.0
2003 Q3 5,813 0 0 0.0
2003 Q2 5,846 0 0 0.0
2003 Q1 6,601 0 0 0.0
2002 Q4 6,907 0 0 0.0
2002 Q3 7,531 0 0 0.0
2002 Q2 6,841 0 0 0.0
2002 Q1 2,778 0 0 0.0
2001 Q4 2,915 0 0 0.0
2001 Q3 6,872 1 0 145.5
2001 Q2 6,794 0 0 0.0
2001 Q1 3,428 0 0 0.0
2000 Q4 5,718 0 0 0.0
2000 Q3 6,836 2 0 292.6
2000 Q2 6,083 0 0 0.0
2000 Q1 1,359 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

36 on file

2024 · 1 incident

February 6, 2024 MO · Metal/Non-Metal miner, prospector, nec STEPPING OR KNEELING ON OBJECT
Con-Agg Companies, LLC · Struck against stationary object

The employee rolled left ankle on a rock while walking behind the crusher during a screen change. The injury resulted in pain and swelling. A physician confirmed there was no severe damage and the employee could return to work on light duty.

2017 · 3 incidents

February 13, 2017 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Mid-Missouri Limestone, Inc · Struck against a moving object

Employee was backing truck on stock pile to dump, positioned truck at an angle, upon lifting bed the truck tipped and landed on driver side.

January 2, 2017 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

Employee was trying to pry a rock loose from tail pulley. Pry bar slipped or dislodged and struck employee in left side of face and head. Hard hat and safety glasses being worn.

2016 · 1 incident

April 16, 2016 MO · Metal/Non-Metal superintendent MACHINERY
Mid-Missouri Limestone, Inc · Over-exertion (Not Elsewhere Classified)

Employee was operating a hand drill, drill bit caught and caused drill to twist and spin. Finger was "jerked" and caused strain. Employee did not notify appropriate management official and report accident until 4/27/2016

2015 · 2 incidents

September 4, 2015 MO · Metal/Non-Metal superintendent HANDLING OF MATERIALS
Mid-Missouri Limestone, Inc · Caught in, under or between (Not Elsewhere Classified)

Miner was pushing detachable trailer locking pin back in place. Pin resisted, when pin gave way, finger was pinched.

August 7, 2015 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Caught in, under or between (Not Elsewhere Classified)

Employee tightening hammers on crusher. Ratchet slip and pinched finger between ratchet and crusher

2013 · 2 incidents

August 30, 2013 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

Employee was power washing equipment (prepping for repair), reached to retrieve something with left hand and accidentally pulled trigger with right hand. Right arm was cut with power washer spray.

July 17, 2013 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DISORDERS (PHYSICAL AGENTS)
Mid-Missouri Limestone, Inc · Contact with heat

Heat Exhaustion

2012 · 1 incident

April 11, 2012 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Mid-Missouri Limestone, Inc · Struck by rolling or sliding object

Lock lodged on machine, when dislodging the rock rolled and struck left hand.

2011 · 2 incidents

December 15, 2011 MO · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
Mid-Missouri Limestone, Inc · Caught in, under or between (Not Elsewhere Classified)

While loading screen cloth from rocks to screen plant, EE pinched finger on loader bucket.

2007 · 3 incidents

September 27, 2007 MO · Metal/Non-Metal outside foreman, leadman ELECTRICAL
Mid-Missouri Limestone, Inc · Absorption of radiations, caustics, toxic and noxious substances

While connecting a charger to battery of a dump truck, battery sparked and ruptured, sending acid at employee.

March 24, 2007 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Struck by flying object

Employee replacing bearing on plant. While using hammer, small piece of steel lodged in eye.

February 23, 2007 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Mid-Missouri Limestone, Inc · Fall onto or against objects

Employee slipped on chain ladder and bruised ribs.

2006 · 2 incidents

December 12, 2006 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

Swing gate/chute on plant impacted shins when hinge broke.

August 29, 2006 MO · Metal/Non-Metal water truck operator MACHINERY
Mid-Missouri Limestone, Inc · Contact with hot objects or substances

Employee accidently sprayed foot w/power washer, hot water resulted in burn.

2004 · 1 incident

July 14, 2004 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Mid-Missouri Limestone, Inc · Over-exertion in lifting objects

Employee claims back injury related to loading scrap crusher hammers.

2003 · 1 incident

September 25, 2003 MO · Metal/Non-Metal truck driver HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS CLEANING HOPPER. LARGE STONE ROLLED AND STRUCK EMPLOYEE'S PRY BAR. PRY BAR STRUCK LEFT LEG FOLLOWED BY STONE STRIKING PRY BAR AND BREAKING LEFT LEG.

2002 · 1 incident

October 31, 2002 MO · Metal/Non-Metal truck driver SLIP OR FALL OF PERSON
Mid-Missouri Limestone, Inc · Fall onto or against objects

EMPLOYEE WAS GETTING INTO DUMP TRUCK, SLIPPED ON RUNNING BOARD & TWISTED RIGHT KNEE. WEATHER WAS RAINY; RUNNING BOARD WAS WET.

2000 · 2 incidents

October 30, 2000 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE PLACED 4" GRINDER ON WORK TABLE PRIOR TO WHEEL STOPPING. GRINDER SPUN AROUND & STRUCK HIS FINGER.

March 31, 2000 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Mid-Missouri Limestone, Inc · Struck by falling object

EE WAS INSPECTING AREA AROUND PLANT FOR BUILD UP UNDER CONVEYOR. ROCK FELL OR CAME FROM PLAT AND STRUCK IN HEAD.

1999 · 1 incident

September 8, 1999 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Mid-Missouri Limestone, Inc · Struck against a moving object

THE STEERING WHEEL OF A EUCLID HAUL TRUCK JERKEDAND IMPACTED EMPLOYEE'S HAND ON THE DASH BOARD.

1998 · 3 incidents

November 14, 1998 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

EE WAS CUTTING FLASHING WITH A UTILITY KNIFE. THE KNIFE CUT OPEN HIS THUMB ON HIS LEFT HAND.

September 15, 1998 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Mid-Missouri Limestone, Inc · Caught in, under or between (Not Elsewhere Classified)

DRIVER WAS GETTING INTO HIS DUMP TRUCK WHEN DOOR SLAMMED ON HIS FINGERS AND SMASHED THEM.

February 25, 1998 MO · Metal/Non-Metal mine manager, mine foreman, mine owner OTHER
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

EE WAS WORKING ON PLANT--USING WELDER AND GRINDEER--HE DID USE HIS WELDING HELMET AND SAFETY GOGGLES, BUT AS THE WAS BLOWING DEBRIS WAS BLOWN INTO THE EE'S EYES, CAUSING DISCOMFORT.

1997 · 2 incidents

July 29, 1997 MO · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

EE WAS UNDER DUMP TRUCK PUTTING IN A PTO SHAFT. HE WAS LAYING ON HIS SIDE USING A LARGE HAMMER TO BEAT THE SHAFT INTO PLACE. WHEN THE VIBRATIONLOOSENED THE DIRT UNDERNEATH, FALLING INTO HIS EYE. HIS SAFETY GLASSES WERE IN PLACE,BUT THE CLUMP FELL AROUND THE SIDE.

June 9, 1997 MO · Metal/Non-Metal drill operator MACHINERY
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

EE WAS DRILLING. HE PUT HIS HAND ON THE DRILL AND AS THE HAMMER CAME DOWN SMASHED HIS FINGER. HE HAD ABSENTMINDEDLY PUT HIS HAND IN THE WRONG PLACE.

1996 · 2 incidents

October 2, 1996 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Mid-Missouri Limestone, Inc · Struck against a moving object

EE WAS DRIVING AN EUCLID ROCK TRUCK. SAID HE HIT A POTHOLE WITH THE FRONT TIRE CAUSING HIM TO LOSE THE GRIP ONT HE STEERING WHEEL. THE STEERING WHEEL SPUN AND THE KNOB ON THE WHEEL CAME AROUND AND HIT HIS ELBOW.

1994 · 1 incident

July 2, 1994 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Mid-Missouri Limestone, Inc · Struck by flying object

EE WAS USING A HAND HELD GRINDER ON A PIECE OF STEEL TO GO ONTO THE CRUSHER. HE WAS WEARING SAFETY GLASSES AND DID NOT REPORT THE INCIDENT FOR 7 DAYS. HE ALSO DID NOT GO TO A DR. UNTIL 7 DAYS AFTER THE ACCIDENT OCCURRED.

1991 · 1 incident

February 18, 1991 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Mid-Missouri Limestone, Inc · Fall from machine

EMPLOYEE LOST HIS BALANCE GETTING OUT OF LOADER. HE HELD ON WITH ONE HAND AND SWUNG AROUND AND HIT HTE LOADER, THEN DROPPED TO THE GROUND.

1989 · 1 incident

October 31, 1989 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Mid-Missouri Limestone, Inc · Flash burns (welding)

WORKING NEXT TO WELDING , DEVELOPED FLASH BURNS TO EYE

1986 · 3 incidents

October 21, 1986 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

THE EE WAS REMO5ING A CUTTING EDGE FROM A DOZER WITH A SLEDGE HAMMER & A PIECE OF METAL BROKE OFF & WENT INTO HIS LEG.

June 9, 1986 MO · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor MACHINERY
Mid-Missouri Limestone, Inc · Struck by... (Not Elsewhere Classified)

A POWER GRINDER3WAS BEING USED WHEN IT BECAME LODGED IT KICKED BACK & STRUCK OPERATOR IN KNEE.

February 24, 1986 MO · Metal/Non-Metal outside foreman, leadman MACHINERY
Mid-Missouri Limestone, Inc · Struck by falling object

WHILE HE WAS IN3THE PROCESS OF CUTTING A PIECE OF ANGLE IRON ANOTHER PIECE FELL ON HIS HEAD. HE WAS WEARING A HARD HAT, BUT IT WAS KNOCKED OFF CAUSING A SMALL CUT BEHIND HIS RIGHT EAR.

For insurers, brokers, and safety consultants

The full compliance file on Millersburg Quarry

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.