Mining Incidents

Columbia East Quarry Metal/Non-Metal

Columbia, Boone County, MO  ·  Abandoned
MSHA Mine ID: 2300078

Columbia East Quarry has $24K in proposed MSHA penalties and $0 outstanding across 5 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
24
Years on record
1983–2021
Latest incident
Sep 2021
Compliance record
MSHA citations since 2000
91
citations
24
significant & substantial
$23,821
proposed penalties
$23,461
paid to date
98% of proposed penalties paid to date, a $360 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
69
inspections on record
1,174
inspection hours
7.8
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.
91 citations across 1,174 inspection hours.
Source: MSHA inspections data, updated weekly.

Columbia East Quarry has $24K in proposed MSHA penalties and $0 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.
$24K
proposed penalties
$23K
current assessed
$23K
paid to date
$0
outstanding
91 assessments are final orders; 5 contested dockets.
As of the most recent assessment on 2022-01-18.
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 Q1 174 0 0 0.0
2024 Q4 457 0 0 0.0
2024 Q3 324 0 0 0.0
2024 Q2 332 0 0 0.0
2024 Q1 307 0 0 0.0
2023 Q4 970 0 0 0.0
2023 Q2 0 0 0
2023 Q1 3,071 0 0 0.0
Show 92 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2022 Q4 8,227 0 0 0.0
2022 Q3 7,855 0 0 0.0
2022 Q2 7,187 0 0 0.0
2022 Q1 4,036 4 1 991.1
2021 Q4 7,929 0 0 0.0
2021 Q3 9,086 0 0 0.0
2021 Q2 6,588 2 0 303.6
2021 Q1 5,873 5 0 851.4
2020 Q4 3,153 0 0 0.0
2020 Q3 10,232 5 4 488.7
2020 Q2 5,353 0 0 0.0
2020 Q1 9,302 1 0 107.5
2019 Q4 4,389 0 0 0.0
2019 Q3 6,165 0 0 0.0
2019 Q2 6,820 0 0 0.0
2019 Q1 4,046 3 0 741.5
2018 Q4 6,121 0 0 0.0
2018 Q3 10,443 2 0 191.5
2018 Q2 8,454 0 0 0.0
2018 Q1 8,124 0 0 0.0
2017 Q4 6,424 8 2 1245.3
2017 Q3 10,282 0 0 0.0
2017 Q2 10,162 0 0 0.0
2017 Q1 3,343 1 0 299.1
2016 Q4 12,651 0 0 0.0
2016 Q3 12,173 0 0 0.0
2016 Q2 7,916 2 1 252.7
2016 Q1 6,974 1 0 143.4
2015 Q4 11,942 0 0 0.0
2015 Q3 15,335 1 0 65.2
2015 Q2 15,017 0 0 0.0
2015 Q1 11,244 1 0 88.9
2014 Q4 7,429 0 0 0.0
2014 Q3 15,023 1 0 66.6
2014 Q2 15,096 0 0 0.0
2014 Q1 10,905 0 0 0.0
2013 Q4 11,833 3 1 253.5
2013 Q3 16,390 0 0 0.0
2013 Q2 16,073 2 0 124.4
2013 Q1 14,145 0 0 0.0
2012 Q4 12,922 4 1 309.5
2012 Q3 15,989 0 0 0.0
2012 Q2 16,968 1 1 58.9
2012 Q1 15,724 0 0 0.0
2011 Q4 16,975 1 0 58.9
2011 Q3 21,004 0 0 0.0
2011 Q2 18,474 5 3 270.7
2011 Q1 16,182 0 0 0.0
2010 Q4 15,486 3 1 193.7
2010 Q3 17,842 6 3 336.3
2010 Q2 18,964 0 0 0.0
2010 Q1 16,042 8 4 498.7
2009 Q4 14,043 0 0 0.0
2009 Q3 11,040 0 0 0.0
2009 Q2 8,045 0 0 0.0
2009 Q1 8,913 0 0 0.0
2008 Q4 7,233 1 1 138.3
2008 Q3 8,884 0 0 0.0
2008 Q2 12,982 0 0 0.0
2008 Q1 7,544 0 0 0.0
2007 Q4 10,679 0 0 0.0
2007 Q3 9,278 0 0 0.0
2007 Q2 11,551 1 0 86.6
2007 Q1 7,285 0 0 0.0
2006 Q4 10,503 2 0 190.4
2006 Q3 11,727 0 0 0.0
2006 Q2 12,176 3 0 246.4
2006 Q1 12,598 0 0 0.0
2005 Q4 13,996 1 0 71.4
2005 Q3 14,716 0 0 0.0
2005 Q2 15,876 0 0 0.0
2005 Q1 13,827 0 0 0.0
2004 Q4 14,392 0 0 0.0
2004 Q3 16,354 0 0 0.0
2004 Q2 14,284 0 0 0.0
2004 Q1 13,462 0 0 0.0
2003 Q4 9,641 0 0 0.0
2003 Q3 10,390 1 0 96.2
2003 Q2 10,081 0 0 0.0
2003 Q1 7,329 7 0 955.1
2002 Q4 8,203 1 1 121.9
2002 Q3 8,349 0 0 0.0
2002 Q2 8,999 0 0 0.0
2002 Q1 7,377 0 0 0.0
2001 Q4 8,232 0 0 0.0
2001 Q3 7,933 3 0 378.2
2001 Q2 9,490 0 0 0.0
2001 Q1 10,160 0 0 0.0
2000 Q4 8,924 0 0 0.0
2000 Q3 9,469 1 0 105.6
2000 Q2 8,828 0 0 0.0
2000 Q1 6,554 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

24 on file

2021 · 1 incident

September 20, 2021 MO · Metal/Non-Metal groundman, yardman SLIP OR FALL OF PERSON
Con-Agg Companies, LLC · Fall from machine

Employee fell while descending conveyor about 3', resulting in a 1" cut to right elbow and 2 stitches.

2020 · 1 incident

September 4, 2020 MO · Metal/Non-Metal miner, prospector, nec EXPLODING VESSELS UNDER PRESSURE
Con-Agg Companies, LLC · Struck by... (Not Elsewhere Classified)

Oxygen hose on cutting torch set broke and made a loud "pop" causing the miner's left ear to ring and left eye to see blue and red dots. Miner was taken to ER and evaluated, released to duty with restrictions until follow up apt. Possible concussion. No other physical visible injuries.

2016 · 1 incident

January 28, 2016 MO · Metal/Non-Metal miner, prospector, nec MACHINERY
Con-Agg Companies, LLC · Struck by flying object

The wind blew a piece of metal into left eye while grinding. No lost time, full duty, no restrictions, prescribed antibiotic ointment

2011 · 1 incident

November 15, 2011 MO · Metal/Non-Metal miner, prospector, nec OTHER
Con-Agg Companies, LLC · Unclassified, insufficient data

Mine worker found an apparent dead body in pit area. Notified supervisor who notified 911 service and MSHA. Authorities determined deceased was a 17 year old male and not employed by Con Agg of MO, LLC. MSHA inspector completed the investigation for MSHA.

2007 · 1 incident

August 15, 2007 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator DISORDERS (PHYSICAL AGENTS)
Con-Agg Companies, LLC · Contact with heat

Temperatures were near or at 100 that day. Had been performing maintenance on the air conditioning on the loader. Then, had loaded 3 trucks. Then became dizzy, had shortness of breath, loss of control of movement and almost blacked out. Due to dehydration. NOTE: Late report due to possible non work related condition.

2003 · 1 incident

2002 · 3 incidents

June 4, 2002 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Con-Agg Companies, LLC · Struck by falling object

EE WAS UNPLUGGING CHUTE WHEN A ROCK FELL AND HITTHE LEFT SIDE OF HIS FACE.

March 6, 2002 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Con-Agg Companies, LLC · Absorption of radiations, caustics, toxic and noxious substances

EE WAS POURING CONCRETE AT THE QUARRY. HE HAD RUBBER BOOTS ON BUT SOME CONCRETE GOT ON THE BACK SIDE OF HIS LEGS.

March 5, 2002 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Con-Agg Companies, LLC · Struck by... (Not Elsewhere Classified)

EE WAS USING A GRINDER ON THE SOUTH WALL WHEN A PIECE OF STEEL GOT IN HIS LEFT EYE.

1996 · 4 incidents

October 28, 1996 MO · Metal/Non-Metal welder (shop) MACHINERY
Medusa Aggregates Company · Struck by flying object

EMPLOYEE WAS OPERATING IMPACTOR. A ROCK FLEW OUT OF IMPACTOR HITTING HIM IN THE RIGHT EYE AND CHEEK. THE ROCK KNOCKED HIS SAFETY GLASSES OF AND HIT HIM IN THE RIGHT EYE AND RIGHT SIDE OF NOSE.

July 29, 1996 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Medusa Aggregates Company · Fall from scaffolds, walkways, platforms

EMP WAS DOING MAINTENANCE ON CRUSHER PLANT. STEPPED THROUGH A 5" SPACE IN THE CATWALK AND SLIPPED THROUGH TO HIS KNEE.

July 18, 1996 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Medusa Aggregates Company · Fall from machine

EE WAS EXITING HAUL UNIT TRUCK. HIS FOOT SLIPPED ON 3RD RUNG OF LADDER CAUSING HIM TO CATCH HANDRAIL WITH LEFT HAND CAUSING BODY TO TURN AND HIT FLOOR BOARD OF TRUCK.

April 4, 1996 MO · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey HANDTOOLS (NONPOWERED)
Medusa Aggregates Company · Struck by... (Not Elsewhere Classified)

EE WAS USING BAR TO DRIVE CENTER PIN FROM REAR END OF HAUL TRUCK. WHEN THE PIN CAME OUT THE REAR END MOVED BACK CAUSING THE BAR TO STRIKE EE.

1994 · 2 incidents

December 29, 1994 MO · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant HANDLING OF MATERIALS
Medusa Aggregates Company · Caught in, under or between a moving and a stationary object

EMPLOYEE WAS ATTEMPTING TOPULL TAIL GATE OPEN ON DUMP TRUCK HIS RT THUMB GOT CAUGHT BETWEEN THE TRUCK BED & TAILGATE

November 30, 1994 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver OTHER
Medusa Aggregates Company · Struck by flying object

EMPLOYEE WAS HELPING WELDER REPAIR A CHUTE ON TOWER 2 AT CRUSHER PLANT. WIND BLEW A PIECE OF RUSTY METAL INTO HIS LEFT EYE. EMPLOYEE WAS WEARING SAFETY GLASSES.

1992 · 1 incident

April 2, 1992 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Medusa Aggregates Company · Struck by... (Not Elsewhere Classified)

EE WAS INSTALLING V BELTS ON PUMP ENGINE AND HIS SHOULDER HIT THE STARTER BUTTON CAUSING THE ENGINE TO TURN OVER EE S LEFT HAND WAS HIT BY THE FAN PULLEY CUTTING OFF END OF MIDDLE FINGER AND B REAKING TWO OTHER FINGERS.

1990 · 3 incidents

November 2, 1990 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Medusa Aggregates Company · Fall to lower level, (Not Elsewhere Classified)

EMPLOYEE WAS HELPING BUILD A BUILDING OVER A NEWKT DRILLED WELL. HE WAS WALKING ON THE RAFTERS AND HIS FOOT SLIPPED OFF THE RAFTER CAUSING HIM TO FALL. HE CAUGHT HIMSELF BEFORE HITTING THE GR OUND AND IN DOING THIS PULLED A MUSCLE IN HIS LOWER BACK.

August 20, 1990 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Medusa Aggregates Company · Over-exertion (Not Elsewhere Classified)

EMPL WAS WORKING ON DRILL TRYING TO GET HOSE DISCONNECTED. HE WAS SITTING IN CRAMPED POSITION WHICH REQUIRED HIM TO HAVE TO REACH & STRETCH TO GET TO HOSE.

February 9, 1990 MO · Metal/Non-Metal drill operator MACHINERY
Medusa Aggregates Company · Struck by... (Not Elsewhere Classified)

EMPL WAS WELDING ON FEEDER AT CRUSHER PLANT & STOPPED TO CHIP SOME METAL SLAG. SPECK FROM SLAG GOT INTO EYE.

1989 · 1 incident

June 30, 1989 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver MACHINERY
Medusa Aggregates Company · Struck by... (Not Elsewhere Classified)

EMPL WAS CHANGING SCREENS AT CRUSHER PLANT USING AN AIR IMPACT TOOL THE AIR HOSE POPPED OFF HITTING EMPL ON L CHEEK THE FORCED AIR FORM THE HOSE HIT CORNEA IN L EYE

1988 · 1 incident

July 7, 1988 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Medusa Aggregates Company · Fall onto or against objects

EMPLOYEE WAS ON A CONVEYOR MEASURING FOR A MOTOR MOUNT. HE FELL FACE FOWARD ON THE BELT AFTER THE BELT WAS STARTED BY ANOTHER EMPLOYEE WHO DID NOT KNOW HE WAS ON THE BELT.

1987 · 1 incident

January 5, 1987 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver MACHINERY
Medusa Aggregates Company · Struck by falling object

CONVEYOR WAS BE3NG HELD UP BY ENDLOADER SO EMPLOYEE COULD CUTT OFF SUPPORT LEGS WITH A CUTTING TORCH. WHEN THE LEG WAS CUT LOOSE IT FELL BACK TOWARD EMPLOYEE STRIKING HIM ON RIGHT ANKLE.

1986 · 1 incident

August 21, 1986 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Medusa Aggregates Company · Caught in, under or between a moving and a stationary object

ADJUSTMENT WAS 6EING MADE TO CONE CRUSHER. EMPLOYEE GOT LEFT INDEX FINGER CAUGHT BETWEEN CRUSHER AND WRENCH.

1983 · 1 incident

August 23, 1983 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Medusa Aggregates Company · Fall to the walkway or working surface

EMP WAS USING RATCHET TO ADJUST CONE CRUSHER WHEN PRESSURE WAS PUT ON THE RATCHET THE GEAR IN THE RATCHET BROKE CAUSING HIM TO LOSE BALANCE AND FALL ON THE CATWOALK

For insurers, brokers, and safety consultants

The full compliance file on Columbia East 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.