Mining Incidents

Conco Quarries-Marshfield Metal/Non-Metal

Controlled by CRH PLC
Marshfield, Webster County, MO  ·  Active
MSHA Mine ID: 2301928

Conco Quarries-Marshfield has $47K in proposed MSHA penalties and $8 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
33
Years on record
1986–2022
Latest incident
Oct 2022
Compliance record
MSHA citations since 2001
123
citations
29
significant & substantial
$46,741
proposed penalties
$44,234
paid to date
95% of proposed penalties paid to date, a $2,507 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
67
inspections on record
930
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: 930 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Conco Quarries-Marshfield has $47K in proposed MSHA penalties and $8 outstanding across 2 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.
$47K
proposed penalties
$44K
current assessed
$44K
paid to date
$8
outstanding
123 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-01-14.
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 3,146 0 0 0.0
2025 Q3 3,929 0 0 0.0
2025 Q2 4,131 2 0 484.1
2025 Q1 3,941 1 0 253.7
2024 Q4 3,473 0 0 0.0
2024 Q3 2,703 0 0 0.0
2024 Q2 3,032 0 0 0.0
2024 Q1 2,566 3 1 1169.1
Show 94 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 2,932 0 0 0.0
2023 Q3 5,298 4 0 755.0
2023 Q2 4,530 0 0 0.0
2023 Q1 3,464 6 1 1732.1
2022 Q4 4,497 0 0 0.0
2022 Q3 3,928 0 0 0.0
2022 Q2 3,341 10 4 2993.1
2022 Q1 3,727 0 0 0.0
2021 Q4 4,395 2 0 455.1
2021 Q3 5,469 4 0 731.4
2021 Q2 4,461 0 0 0.0
2021 Q1 2,990 0 0 0.0
2020 Q4 6,120 0 0 0.0
2020 Q3 3,646 1 0 274.3
2020 Q2 5,192 0 0 0.0
2020 Q1 4,330 0 0 0.0
2019 Q4 4,968 0 0 0.0
2019 Q3 4,627 0 0 0.0
2019 Q2 2,757 3 0 1088.1
2019 Q1 560 0 0 0.0
2018 Q4 1,483 0 0 0.0
2018 Q3 371 0 0 0.0
2018 Q2 607 0 0 0.0
2018 Q1 1,904 7 3 3676.5
2017 Q4 5,513 0 0 0.0
2017 Q3 5,813 0 0 0.0
2017 Q2 5,011 2 1 399.1
2017 Q1 5,490 0 0 0.0
2016 Q4 5,751 1 0 173.9
2016 Q3 5,018 4 0 797.1
2016 Q2 9,387 0 0 0.0
2016 Q1 5,320 1 0 188.0
2015 Q4 3,245 0 0 0.0
2015 Q3 8,478 0 0 0.0
2015 Q2 5,730 2 0 349.0
2015 Q1 3,796 5 1 1317.2
2014 Q4 2,052 0 0 0.0
2014 Q3 5,413 0 0 0.0
2014 Q2 7,287 2 0 274.5
2014 Q1 6,584 2 1 303.8
2013 Q4 4,441 0 0 0.0
2013 Q3 6,678 0 0 0.0
2013 Q2 5,316 4 1 752.4
2013 Q1 6,769 5 2 738.7
2012 Q4 5,731 0 0 0.0
2012 Q3 3,256 3 1 921.4
2012 Q2 5,159 0 0 0.0
2012 Q1 5,095 0 0 0.0
2011 Q4 4,325 1 0 231.2
2011 Q3 8,295 2 0 241.1
2011 Q2 9,293 0 0 0.0
2011 Q1 7,706 1 0 129.8
2010 Q4 8,424 0 0 0.0
2010 Q3 7,886 8 6 1014.5
2010 Q2 13,299 0 0 0.0
2010 Q1 9,439 0 0 0.0
2009 Q4 8,218 0 0 0.0
2009 Q1 6,455 0 0 0.0
2008 Q4 8,980 7 3 779.5
2008 Q3 9,439 3 0 317.8
2008 Q2 9,965 0 0 0.0
2008 Q1 8,942 2 0 223.7
2007 Q4 4,209 0 0 0.0
2007 Q3 8,679 1 1 115.2
2007 Q2 8,852 0 0 0.0
2007 Q1 8,203 0 0 0.0
2006 Q4 7,826 0 0 0.0
2006 Q3 11,205 0 0 0.0
2006 Q2 9,388 0 0 0.0
2006 Q1 8,022 4 1 498.6
2005 Q4 9,160 0 0 0.0
2005 Q3 9,207 1 1 108.6
2005 Q2 9,680 3 0 309.9
2005 Q1 9,985 0 0 0.0
2004 Q4 10,310 4 0 388.0
2004 Q3 12,970 0 0 0.0
2004 Q2 10,350 0 0 0.0
2004 Q1 8,926 0 0 0.0
2003 Q4 8,174 1 0 122.3
2003 Q3 8,939 2 0 223.7
2003 Q2 9,642 0 0 0.0
2003 Q1 7,912 1 0 126.4
2002 Q4 7,475 0 0 0.0
2002 Q3 8,124 0 0 0.0
2002 Q2 7,235 2 1 276.4
2002 Q1 3,687 0 0 0.0
2001 Q4 9,171 5 0 545.2
2001 Q3 7,412 0 0 0.0
2001 Q2 8,811 0 0 0.0
2001 Q1 8,093 0 0 0.0
2000 Q4 8,578 0 0 0.0
2000 Q3 9,496 0 0 0.0
2000 Q2 8,101 0 0 0.0
2000 Q1 8,666 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

33 on file

2022 · 1 incident

October 7, 2022 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
Conco Quarries, Inc. A CRH Company · Bodily reaction, (Not Elsewhere Classified)

Employee was squatting, working on a rail guard on the crusher when they felt a pop in knee. After the initial doctors office visit, EE was prescribed self care. The knee did not improve and doctor requested an MRI. The MRI revealed a torn meniscus that would require surgery to repair. Employee underwent surgery on 10/7 was returned to modified duty following surgery on 10/10.

2017 · 1 incident

December 1, 2017 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Over-exertion (Not Elsewhere Classified)

Employee was walking to the picnic table for lunch and twisted right ankle. X-rayed and given Ibuprofen and an ace wrap and told to keep elevated with ice. Released to regular duty.

2016 · 1 incident

May 24, 2016 MO · Metal/Non-Metal weighman, scale person ELECTRICAL
Ash Grove Aggregates Inc · Contact with electrical current

During a thunderstorm, EE was at desk in scale house doing paperwork. Lightning struck nearby radio tower & power went off. The floor was damp due to heavy rain. About 5-10 min later, EE began to tingle & burn. EE went to ER that evening and they treated for burn of nerve endings from waist up. Administered steroids and Benadryl by IV. EE was discharged with no further treatment.

2014 · 3 incidents

June 9, 2014 MO · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Struck against stationary object

Employee was loosening bolts with an impact and wrench. Wrench slipped and hurt his middle finger. Employee didn't mention the injury until next day. X-ray shows no break but MRI has been ordered to check for tendon damage.

April 23, 2014 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall onto or against objects

Employee was climbing up ladder and lost his grip, falling against his right shoulder. Diagnosed with right shoulder contusion.

March 7, 2014 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Over-exertion in pulling or pushing objects

Employee was loosening the bolts to open the impactor door. He didn't realize he hurt himself and reported the injury on 3/12/2014. Diagnosis was left shoulder strain. On restricted duty and receiving physical therapy treatments.

2008 · 1 incident

November 4, 2008 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Struck by falling object

Employee was cleaning out a lime surge bin and a chunk of packed lime fell on his hard hat. He told his supervisor but declined medical attention and went home. He decided to go to the local hospital ER that evening for evaluation without telling anyone. They performed a scan for a concussion but found nothing wrong. Employee did not file claim until 11/11/08.

2005 · 2 incidents

December 7, 2005 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Ash Grove Aggregates Inc · Struck by falling object

Employee was unscrewing a drill bit from the drill and it unscrewed the entire 18' drill steel from the drill and it fell down on her left hand. Several stitches were required to the lacerations of the last three fingers on her left hand. There were no broken bones but there is still concern that amputation of part of her ring finger may be required.

August 12, 2005 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall from machine

EMPLOYEE WAS TIGHTENING THE BOLTS ON THE IMPACTOR WITH A WRENCH. THE WRENCH FELL, HE SPUN AROUND AND LOST HIS BALANCE AND FELL (APPROX 8 FEET) TO THE GROUND AND LANDED ON HIS FEET, FRACTURING BOTH FEET AND REQUIRING SURGERY.

2004 · 4 incidents

October 30, 2004 MO · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEES WERE REPLACING BELTS ON THE FINISH SCREEN. THE ELECTRIC MOTOR WAS PULLED BACK WITH A LOG CHAIN AND A COME-ALONG AND IT SLIPPED AND SWUNG INTO THE INJURED EMPLOYEE'S CHEST CAUSING A CONTUSION TO HIS LEFT RIB CAGE AND LUNG.

August 25, 2004 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall onto or against objects

Employee was unloading anfo bags from the powder truck and he slipped and fell, landing across the wooden bed frame. Diagnosis was contusion of right chest.

April 16, 2004 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall from machine

EMPLOYEE WAS CLIMBING THE LADDER INTO THE LOADER, SLIPPED AND FELL, LANDING ON HIS LEFT LEG CAUSING STRAIN TO HIS BACK AND LEFT BUTTOCK. HE WAS EXAMINED, TREATED WITH MEDICATION AND RETURNED TO WORK WITH NO RESTRICTIONS. HE RETURNED AFTER A FEW WEEKS COMPLAINING IT WAS NOT COMPLETELY HEALED. AN MRI AND EPIDURAL STERIOD INJECTION WAS GIVEN ON 5/4 AND ANOTHER INJECTION ON 5/24/04.

February 17, 2004 MO · Metal/Non-Metal truck driver HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Over-exertion (Not Elsewhere Classified)

EE WAS HELPING UNPLUG THE CONE CRUSHER WITH A STEEL ROD. HE HAD HAD PREVIOUS SURGERY ON HIS WRIST AND HE COMPLAINED THAT IT WAS HURTING AGAIN. HE WAS SEEN BY ORTHOPAEDIC DR WITH A DIAGNOSIS OF EXACERBATION OF RIGHT WRIST. HE WAS PLACED ON RESTRICTED LIFTING, PUSHING, OR PULLING.

2002 · 2 incidents

December 12, 2002 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Ash Grove Aggregates Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS WELDING AND A PIECE OF SLAG GOT CAUGHT BETWEEN HIS WELDING HOOD AND INTO HIS LEFT EYE. THE EYE DOCTOR TREATED WITH ANTIBIOTIC FOR CORNEAL ABRASION.

February 4, 2002 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Ash Grove Aggregates Inc · Flash burns (welding)

EMPLOYEE WAS WELDING ON A BIN OUTSIDE THE SHOP WITH OTHER WELDERS AROUND HIM AND HE EXPERIENCED FLASH BURN LATER THAT NIGHT.

2001 · 1 incident

July 2, 2001 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall onto or against objects

EE WAS CLIMBING OVER ROCKS TO CLIMB ONTO LOADER LADDER AND TRIPPED AND FELL INTO THE LOADER STEP-CUTTING HIS LEFT EYEBROW.

2000 · 2 incidents

July 11, 2000 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall to the walkway or working surface

EE WAS PUTTING SUCTION HOSE IN SUMP AND THE HOSE PUSHED HIS FEET OUT FROM UNDER HIM. HE FELL--DISLOCATING HIS FOURTH FINGER ON THE LEFT HAND AND MULTIPLE ABRASIONS.

March 24, 2000 MO · Metal/Non-Metal weighman, scale person POWERED HAULAGE
Ash Grove Aggregates Inc · Struck by flying object

SALES ASSISTANT SCALEMAN, WAS LOADING CUSTOMERS'TRUCKS WITH THE LOADER AND ROCK PARTICLES EMBEDDED INTO HIS LEFT EYE (EMPLOYEE CLAIMS HE WAS WEARING HIS ASSIGNED SAFETY GLASSES) HE WAITED UNTI L MONDAY 03/27/00 TO GO TO THE DR. AND THEY REMOVED ROCK SLIVERS. HE WORE A PATCH AND MADE SALES TICKETS UNTIL HE WAS FULLY RELEASED ON 03/31/00, WITH NO PERMANENT DAMAGE.

1998 · 1 incident

July 7, 1998 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver MACHINERY
Ash Grove Aggregates Inc · Struck by... (Not Elsewhere Classified)

EE WAS PUTTING ELECTRIC CABLES ON TOP OF THE ELECTRIC SET, PREPARING FOR A PLANT MOVE, AND THE PULLEY BLOCK ON THE CRANE SWUNG AND CUT HIS WRIST ON A PIECE OF METAL.

1996 · 2 incidents

September 4, 1996 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Struck by flying object

REPAIR WORK WAS BEING PERFORMED ON A FURUKAWA ROCK DRILL. ANOTHER EE WAS SWINGING A SLEDGE HAMMER TO REMOVE A PIN FROM THE DRILL BOOM AND THE HEAD CAME OFF THE SLEDGE HAMMER AND HIT EE IN THE MOUTH, CUTTING HIS LIP AND BREAKING A TOOTH.

May 9, 1996 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall to lower level, (Not Elsewhere Classified)

EMPLOYEE WAS STEPPING OUT OF THE CRUSHER BUILDING AND STEPPED INTO A MUDHOLE, TWISTING HIS ANKLE.

1995 · 1 incident

July 25, 1995 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Struck by flying object

EE WAS AHMMERING A WEDGE INTO A RAILPIN. THE WEDGE FLEW BACK OUT AND STRUCK HIM ON THE RIGHT CHEEK CUTTING IT.

1994 · 1 incident

October 20, 1994 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Ash Grove Aggregates Inc · Flash burns (welding)

EE WAS WELDING ON THE UNDERCARRIAGE OF A D155 DOZER AND HAD WELDER FLASH BURN TO HIS EYE.

1992 · 2 incidents

November 10, 1992 MO · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Ash Grove Aggregates Inc · Struck by flying object

MECHANIC WAS WORKING ON THE BRAKES ON A TRUCK & A PART FLEW OFF & HIT THE INJURED EMPLOYEE ON THE LEFT LEG CUTTING IT & BRUISING IT

March 16, 1992 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver OTHER
Ash Grove Aggregates Inc · Fall from machine

EMPL IS OVER-THE-ROAD TRUCK DRIVER TARPING LOAD,THE WIND CAUGHT THE TARP AND THREW HIM OVER THE TAILGATE OF THIS TRUCK CAUSING A DISLOCATION IN HIS BACK AND SHOULDERS.

1991 · 1 incident

March 20, 1991 MO · Metal/Non-Metal weighman, scale person SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Over-exertion (Not Elsewhere Classified)

WHILE OPENING THE LOADER DOOR, HIS FOOT SLIPPED OFF THE STEP. HE GRABBED THE HANDRAIL AND PULLED A MUSCLE IN HIS STOMACH.

1990 · 2 incidents

October 31, 1990 MO · Metal/Non-Metal welder (shop) MACHINERY
Ash Grove Aggregates Inc · Struck by falling object

EMPL CLEANING OUT AROUND CRUSHER PLANT AND LARGE ROCK FELL OFF AND HIT HIM BRUISING LEFT SHOULDER.

October 8, 1990 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS HELPING WITH PLANT MAINTENANCE & WAS SWINGING A HAMMER & SMASHED HIS OWN THIRD FINGER RIGHT HAND

1989 · 1 incident

January 20, 1989 MO · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler SLIP OR FALL OF PERSON
Ash Grove Aggregates Inc · Fall from machine

EMPL STEPPED OFF TAILGATE OF PICKUP ON UNLEVEL GROUND AND HURT HIS ANKLE.CHIPPED ANKLE BONE AND PULLED LIGMENTS.

1988 · 1 incident

June 9, 1988 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Ash Grove Aggregates Inc · Struck by... (Not Elsewhere Classified)

WHILE CHANGING A TIRE ON THE FURL TRUCK,THE LEFT OUTSIDE DUAL STRUCK HIM ON THE LEFT ARM AND SHOULDER CAUSING HIS SHOULDER TO GO OUT OF PLACE.

1987 · 2 incidents

April 20, 1987 MO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Ash Grove Aggregates Inc · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS PU5LING ON PIPE ON WRENCH WHEN HANDLE ON WRENCH BROKE, CAUSING HIM TO THROW HIS BACK OUT OF PLACE.

1986 · 1 incident

March 10, 1986 MO · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS
Ash Grove Aggregates Inc · Over-exertion in pulling or pushing objects

EMPLOYEE WAS HE5PING PUSH A STUCK PICK-UP TRUCK WHEN HE TWISTED HIS RIGHT ANKLE.

For insurers, brokers, and safety consultants

The full compliance file on Conco Quarries-Marshfield

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.