Mining Incidents

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Every injury and fatality MSHA has on file. Filter by state, year, sector, classification, experience, or any keyword from the investigator's narrative.

Total incidents
273,095
Of which fatal
1,202
Years on record
2000–2026
Classifications
20
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The record

66 total records

Showing 50 of 66
October 3, 2025 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Fall from scaffolds, walkways, platforms

Employee was injured when EE fell through an elevated platform in a restricted area of the underground mine after EE climbed over a berm to access the restricted, inactive area in violation of the mine's rules and EE's training. The employee was not authorized to enter the restricted, inactive area and was not performing any work activity at the time the accident occurred.

May 19, 2025 MO · Metal/Non-Metal FIRE
Martin Marietta Kansas City, LLC · Accident type, without injuries

Employees arrived for the shift to find a backhoe on fire. Cause of fire was determined to be a lightning strike.

October 7, 2024 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Kansas City, LLC · Over-exertion in pulling or pushing objects

Technician was pulling on a bolt with a wrench and felt strain in elbow.

February 27, 2024 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck against stationary object

Employee fractured rib while doing a belt splice.

February 5, 2024 MO · Metal/Non-Metal electrician helper MACHINERY
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

Employee was drilling hole in a piece of metal (angle iron) to mount Unistrut. Drill bit broke and went under safety glasses injuring eye.

August 24, 2023 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

An employee was cutting flashing, the tool slipped causing a laceration that required stitches to EE's right hand.

June 5, 2023 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

Employee was removing a shipping brace from a screen deck and was struck in the hand, fracturing their fingertip.

January 30, 2023 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech Fatality · SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Fall from scaffolds, walkways, platforms

An employee was fatally injured when they fell from an opening in an elevated catwalk.

June 20, 2022 MO · Metal/Non-Metal FIRE
Martin Marietta Kansas City, LLC · Accident type, without injuries

A fire started on the slope belt when one of the drive pulleys tripped out and the second pulley continued to pull on the belt.

March 4, 2022 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Over-exertion (Not Elsewhere Classified)

On 3/5/22 employee experienced shoulder pain but only reported it two days later. The doctor found it was not from work. At employee's request, a second doctor opined that work was the prevailing factor. Employer requested an IME and on 11/4/22 we received notice that the third doctor would likely opine work was the prevailing factor. Thus we are now submitting the 7000-1.

November 11, 2020 MO · Metal/Non-Metal superintendent MACHINERY
Martin Marietta Kansas City, LLC · Absorption of radiations, caustics, toxic and noxious substances

Taking hose off of packer while pressure was still up. Hose disconnected and hit employee in face blowing employee's safety glasses off causing chemical grout to blow into both eyes.

June 11, 2020 MO · Metal/Non-Metal truck driver HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Over-exertion (Not Elsewhere Classified)

An employee was assisting with the removal of a guard and lost balance, the injured employee attempted to stabilize the co-worker and injured EE's bicep in the process.

October 11, 2018 KS · Metal/Non-Metal FIRE
Martin Marietta Kansas City, LLC · Accident type, without injuries

An employee was loading haul trucks using the CAT 365B track hoe when the employee noticed the machine had caught fire. The employee exited the machine and called for assistance. The fire department extinguished the fire. The cause of the fire remains undetermined, and there were no injuries suffered.

June 30, 2018 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Fall from machine

Employee was performing maintenance on a crusher. A chain used during the work shifted, startling the employee causing EE to lose balance and fall. Impact of the fall resulted in three stitches to EE's elbow.

March 13, 2018 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Fall to the walkway or working surface

While spraying Shotcrete, employee lost control of the concrete hose and fell down striking left shoulder, resulting in an AC Separation.

February 23, 2018 MO · Metal/Non-Metal truck driver POWERED HAULAGE
Martin Marietta Kansas City, LLC · Struck against a moving object

Employee was traveling to the crusher with a load of shot rock when EE failed to maintain control of the truck EE was operating. The truck traveled over a berm and struck a pillar in the underground mine. The employee was taken to a hospital for treatment.

January 30, 2018 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by falling object

Employee was assisting with the replacement of an outrigger on the mechanical scaler, when the hydraulic cylinder that was being supported by a block of wood fell from the block striking the employees finger. The employee was seen at a medical center and released that night.

September 19, 2017 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

Employee was modifying the flashing for a new belt. During the process, the employee needed to remove a piece of flashing. The employee began cutting the piece with a box cutter, the cutter slipped and the employee cut their left arm. The employee immediately returned to work after care the same day.

August 23, 2017 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

Injured worker was using 1' impact to remove cutting edge hardware (bolts). Worker reached around to push bolt back into place and accidentally engaged the impact causing laceration to palm of right hand.

August 21, 2017 MO · Metal/Non-Metal INUNDATION
Martin Marietta Kansas City, LLC · Accident type, without injuries

A record rainfall of 6.14", the largest amount of rain in one day since the construction of the Stamper Mine portal, resulted in the mine's intake lake releasing water. Water traveled down the slope and into a localized area of the mine. We do not believe that this event is "an unplanned inundation of a mine by a liquid" and are submitting the 7000-1 at MSHA's direction.

August 4, 2017 MO · Metal/Non-Metal front-end loader operator POWERED HAULAGE
Martin Marietta Kansas City, LLC · Caught in, under or between a moving and a stationary object

Employee was diagnosing an issue with the swing operation of the manlift basket while in the basket. The employee leaned over the control panel while moving the basket causing the employee to strike head on the mine roof & the controls of the manlift. The employee was seen in the ER & given stitches for a laceration to the chin. The employee was released to light duty the same day.

July 12, 2017 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver DISORDERS (PHYSICAL AGENTS)
Martin Marietta Kansas City, LLC · Contact with heat

Employee was assisting with the clean-up of a conveyor when EE reported EE felt hot and dizzy. Employee cooled off in air conditioning and drank some water. After resting for around 30 minutes employee was still complaining so emergency services were contacted. EMS transported employee to an emergency room where EE received IV fluids and was released to full duty the same day.

April 10, 2017 MO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

Employee was adjusting deflector gate on 1 South screen on Monday 4/10/2017. On 4/12/2017, EE noticed that EE's abrasion was more painful and started to swell. At 2:00 pm I went our clinic with employee to be seen by our doctors. Doctor advised employee to continuation of EE's anti-biotic and Dr wants EE to be seen on 4/14/2017 to check EE's infection.

March 22, 2017 MO · Metal/Non-Metal section foreman, bullgang foreman, labor foreman, leadman, shift boss HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by flying object

Employee was adding a drill steel to the drill so they could get the desired depth for a bore scope hole. A piece of shrapnel hit employee in the arm so employee was taken to the ER. Employee was treated and release back to full duty.

March 1, 2017 MO · Metal/Non-Metal scoop tram operator, load/haul/dump operator POWERED HAULAGE
Martin Marietta Kansas City, LLC · Struck against a moving object

Bed of truck came up after dumping load and bed hit ceiling. This is the second report being completed I have the initial report completed on file too.

September 15, 2016 MO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

Detached a plugged 3' long 3" to 2" reducer from our concrete pump. Stood vertical to unplug, when tapping reducer on the ground to remove concrete, the concrete shot up the pipe striking the employee in the face, forcing the employee's goggles up and covering the employee's right eye with concrete.

June 27, 2016 KS · Metal/Non-Metal driller, highwall operator, highwall drill operator HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Over-exertion in lifting objects

Lifting 50lbs. anfo bags from truck and loading them into shot holes over a 2 day time frame, approx. 30 bags each day. Causing back sprain to lower back.

April 23, 2016 MO · Metal/Non-Metal driller operator HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Caught in, under or between a moving and a stationary object

Employees were maneuvering a full 55 gallon drums into a containment area. When placing a drum, the employee's finger was in the line of fire between the drum being moved and one already in the containment. Consequently, two fingers were impacted the middle finger losing the tip and requiring minor surgery and the ring finger which was broken both on the right hand.

April 22, 2016 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Over-exertion (Not Elsewhere Classified)

While stepping out of transmixer truck, stepped down with right leg on loose rock in roadway causing employee to slip down ramp and when boot caught traction and stopped abruptly this caused a jamming motion to right knee.

November 4, 2015 MO · Metal/Non-Metal miner, nec HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by falling object

Employee had removed grate to cement hopper and placed on top of B 50 pump. While attempting to replace grate employee reached out and began pulling the grate back into place. Employee's footing began to slip and while attempting to catch himself with his left hand the grate came down and struck his left fingers resulting in fractures to four of his fingers.

October 8, 2015 KS · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Martin Marietta Kansas City, LLC · Struck against a moving object

At about 9:30 AM employee helped get a production sample off a conveyor belt. This was done the same way that our samples are always collected. At that time the employee felt fine. He continued cleanup around the plant in the skid steer. (His normal job) Around 11:00 he started having back pains when he hit bumps while operating the skid steer

August 18, 2015 MO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler HANDTOOLS (NONPOWERED)
Martin Marietta Kansas City, LLC · Struck by flying object

Employee was working on the belt scraper in slope four, the belt scraper is located on the head roller. The shaft had walked out of the belt scraper, so the employee hit the shaft with a hammer to move it back into place. When he did, employee felt something get into his left eye. Employee was seen at clinic and was released to full duty on 08/19/2015.

June 17, 2015 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STRIKING OR BUMPING
Martin Marietta Kansas City, LLC · Struck against stationary object

While jumping over beam, employees hit his head on another beam overhead.

April 14, 2015 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Over-exertion in lifting objects

Employee diagnosed at later date with abdomen hernia due to lifting, pulling over an extended period of time - chronic. No specific activity on injury date can be blamed for injury. Scheduling problems with doctor and clinics delayed return to work process.

February 17, 2015 MO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Over-exertion (Not Elsewhere Classified)

Miner was exiting his equipment and as he grabbed an hold of the hand rail and as he exited and stepped down, he pulled his left arm straight and pulled muscle in left arm.

February 4, 2015 MO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck by rolling or sliding object

Employee was positioned in a man basket to install lagging onto the newly erected steel set. An employee on the ground removed the spreader pipe and tie rods from the left leg causing the set to shift downhill approx. 2 1/2' The moving set struck the employee (in the man basket) causing contusions to head and face area.

August 14, 2013 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Kansas City, LLC · Struck by... (Not Elsewhere Classified)

While splicing a belt miner sustained a laceration requiring stitches.

April 24, 2012 KS · Metal/Non-Metal miner, prospector, nec OTHER
Martin Marietta Kansas City, LLC · Unclassified, insufficient data

A body was found inside an abandoned refrigerator in a rural field. Incident was discovered by local law enforcement on leased property that is not owned by the mine operator and did not occur on the permitted boundaries of the mine site. Details of incident are provided by local news organizations. MSHA was contacted by operator at the time of discovery.

October 12, 2010 MO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Kansas City, LLC · Struck against stationary object

Underground facility, shop area. Nothing within the conditions contributed to this accident.

August 23, 2010 MO · Metal/Non-Metal FALL OF ROOF OR BACK
Martin Marietta Kansas City, LLC · Accident type, without injuries

A brow fell and it was identified by employees during the shift. The fall damaged one side of a conveyor and discharge line for the pumps. No-one was injured and no-one was around when fall occurred.

April 23, 2010 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
Martin Marietta Kansas City, LLC · Rubbed or abraded

While wearing the proper PPE required for the job, the employee developed a rash on his leg due to the friction of his boots on his skin (leg).

April 16, 2010 MO · Metal/Non-Metal front-end loader operator SLIP OR FALL OF PERSON
Martin Marietta Kansas City, LLC · Over-exertion (Not Elsewhere Classified)

Original incident was reported to company on 4/16/2010 but not MSHA reportable/lost-time until 9/14/2010, thus the submission of the report. Incident occurred when climbing down from ladder when his foot/hand slipped off of handrail. Employee caught himself on safety chain on separate piece of equipment parked next to loader.

Showing 50 of 66