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
Filters 2 active
Time period
Experience at time of incident

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The record

64 matching records

Showing 50 of 64
December 18, 2025 WY · Coal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Employee was trimming a piece of plastic when knife slipped resulting in a laceration to left index finger requiring five stitches.

June 6, 2025 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by flying object

While securing a load to the bed of a service truck with a ratchet strap the anchor point failed. the buckle from the strap struck the employee in the mouth damaging three teeth.

June 4, 2024 WY · Coal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Employee was prepping a splice for vulcanization when the olfa knife employee was using slipped and contacted employee's arm. Employee was transported to the hospital and received stitches resulting in a recordable incident. Employee was released back to work full duty.

October 29, 2023 WY · Coal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Fall onto or against objects

An employee was using a shovel to clean mud from the tracks of a dozer, when the shovel broke and the employee fell into the blade, cutting employee's ear.

January 22, 2020 WY · Coal master mechanic, foreman, supervisor HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck against stationary object

IE was tapping on a rear strut with a hammer when EE's hand contacted a pulling rod that was in the strut pin causing a laceration to EE's left middle finger that required 5 sutures to close.

June 24, 2019 WY · Coal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

A Technician was using a bar to hold the bolt into place so they could attach the nut to the end of a bolt. While screwing the nut to the bolt, the bar slipped. This caused the bolt and attached nut to drop, pinching the Technicians left 5th finger in between the drag case and the nut. This split the Technicians skin on their finger requiring 4 stitches.

July 19, 2017 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in pulling or pushing objects

Removing fittings with a crescent wrench. While pulling on the wrench the employee felt a pop in left elbow. Initial diagnosis is muscle strain.

May 29, 2017 WY · Coal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

An equipment operator slipped on the dozer tracks while pulling on a pry-bar causing the bar to hit EE in the mouth, chipping EE's upper left front tooth.

December 11, 2016 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in wielding or throwing objects

Employee was swinging a sledge hammer against the outside of a bulk storage bin to dislodge the material inside. The end of the hammer became entangled in a stainless steel lifeline cable, causing a strain to the employee's shoulder. The employee received first aid treatment initially, but was later placed on restricted duty by the medical provider on January 13, 2017.

October 11, 2016 WY · Coal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Was changing a bearing and got a piece of metal stuck in hand. Had it removed and required 3 stitches.

July 26, 2016 WY · Coal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in wielding or throwing objects

Changing ties at the mine - setting spikes and a shard split off and hit arm of employee, small particle removed, no lost time went back to work put wrap on arm.

June 15, 2016 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

Employee was removing a swing motor from a PC2000 Komatsu Excavator, when the fitting became loose employee's hand slipped down the wrench crushing it between the wrench and a hardline hose.

December 5, 2015 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

While trying to loosen a nut on a steering wheel of a 793 haul truck, the employee was pulling the wrench towards himself the wrench slipped and struck the employee in the mouth causing a chipped tooth.

March 4, 2015 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

A pit millwright was using a come-a-long to lift a shovel track pad when the hook slipped off the pad striking him on the forehead above the right eye. The result was a laceration requiring stitches.

October 15, 2014 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Using pipe wrench to back up while being tightened. Wrench broke and struck worker on left hand. Fractured left index finger

October 3, 2014 WY · Coal electrician, lineman HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

An electrician was in the process of cutting the tape off a blower motor connection when the knife slipped and cut through his leather glove resulting in a laceration to his left hand that required stitches.

September 12, 2014 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in pulling or pushing objects

While loosening a plug with a ratchet the injured employee felt a pull in his shoulder/neck area which was diagnosed as a strained muscle and resulted in restricted duty.

November 20, 2013 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

A pit millwright was struck on the head/neck by the handle of a sledge hammer when it was improperly being used as a spacer between a hydraulic ram and an idler bearing block to adjust the tension of a shovel track.

September 1, 2013 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Three plant technicians were removing grout from between the railroad tracks when a large section broke and fell from a skid steer bucket, causing a pry bar to flip up and hit an employee in the jaw. This resulted in multiple fractures to the left lower jaw.

October 29, 2011 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between (Not Elsewhere Classified)

Individual pinched hand between steering arm and jack, causing laceration requiring sutures.

August 19, 2011 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

The technician was struck in the mouth with a hammer by another technician while straightening an engine compartment ladder; resulting in chipped teeth and sutures.

June 27, 2011 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

EE was setting jack under right front side of haul truck. When putting it in position got hand caught between jack handle and haul truck.

March 8, 2011 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

The technician's right thumb was pinched between the hammer handle and the feeder chain flight when he struck the chain with the hammer. The result was a fractured thumb and stitches.

November 3, 2010 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

While starting a pin in the apron roller of a scraper, the mechanic struck his right middle finger with a hammer causing a laceration requiring sutures.

July 29, 2010 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by flying object

The mechanic was tightening a bolt on a hydraulic steering line when the wrench slipped off striking his left front tooth and chipped it.

June 25, 2010 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck against stationary object

A wrench slipped off while tightening a hose fitting and the employee lacerated his first and second knuckles on a metal edge. It required stitches to close the wound.

May 30, 2010 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

The technician's palm and knuckle on the left hand were lacerated/pinched when the swing style pin driver he was using glanced off of the wedge in the dump rope socket.

March 30, 2010 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Employee was installing propel motor on P&H 2800 shovel. Employee tightened feet bolts with impact wrench. Injured worker was verifying that he had all the bolts tightened by using 2-1/4" slap wrench and sledge hammer. As employee attempted the bottom foot bolt, the slap wrench came off the nut, striking the employee in the mouth, chipping the top right central incisor.

February 4, 2010 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by flying object

While driving a bearing out, a chip broke off and struck right thigh. Individual received stitches to close wound.

October 1, 2009 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

Technician was loosening fitting on engine when it suddenly came loose, pinching and cutting his hand between the wrench and another fitting. Cut required stitches to close.

July 13, 2009 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Caught in, under or between a moving and a stationary object

The mechanic was prying the top of the LR suspension out of its pinned position. The suspension was supported by a come-a-long near the bottom of the barrel. As the weight began to shift, it caused the prybar to recoil rapidly, pinching/severing the tip of his right pinky finger.

May 31, 2009 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

A mechanic slipped while using a knife to cut a wire-tie and cut his left hand. It required stitches to repair.

March 22, 2009 WY · Coal quality control technician, laboratory technician, laboratory assistant HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

While working on removing an injector, the pry bar slipped and hit the individual in the upper lip, requiring stitches.

January 14, 2009 WY · Coal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by falling object

Employee was jacking a clutch on the propel using a port-a-power, the ram kicked out and hit him in the R.H. leg.

August 6, 2008 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

At the time of the incident the service technician was removing damaged hydraulic hoses from a haul truck. As the the tech was using a knife to cut the plastic ties that held the hoses in place, the knife slipped and cut his left wrist.

July 18, 2008 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Fall from ladders

At the time of the incident the service technician was removing fuel lines from the fuel transfer pump of a CAT 793 truck. As the technician was applying pressure to a wrench, the ladder he was standing on tipped causing him to fall to the ground and land on his right wrist.

April 23, 2008 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

At the time of incident the technician was replacing a damaged hydraulic hose. As the technician was applying considerable pressure to the wrench, the wrench slipped off the bolt and struck him in the mouth, chipping a tooth.

August 16, 2007 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Employee was changing teeth on a loader bucket. One wouldn't come loose so he hit it with a hammer. A chip of steel came off the tooth and embedded in his left thigh. There was no initial treatment as the emergency room doctor recommended he leave it in place. A second opinion by a surgeon recommended removing it. He had it removed on 9/20/07.

November 15, 2006 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in wielding or throwing objects

Employee was using a hammer to uncrate fan, over extended arm causing partial thickness tear to tendon.

September 1, 2006 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by flying object

While chipping slag, got a particle in his eye. He was wearing safety glasses and a welding helmet. Antibiotics were administered.

July 27, 2006 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

The technician was struck in the left shin with a piece of metal when striking a ripper tooth with a hammer. The resulting laceration required sutures.

May 6, 2006 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

A snap-ring came off the snap-ring pliers just as it cleared the housing and struck the employee, causing a 1 1/2" laceration to his chin. The injury required stitches to close it.

January 17, 2006 WY · Coal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in wielding or throwing objects

Employee was swinging a sledge hammer to loosen a tooth on a dragline bucket. He changed his swing from right to left and his backed popped. He worked the rest of his rotation, 2 1/2 days and on 1/24/06, his days off, he saw a chiropractor and was manipulated.

August 6, 2005 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by flying object

Employee struck steering pin (haul truck) with sledge and two pieces broke loose, penetrating his right thigh. He pulled one piece out himself and the emergency doctor decided to leave the other in place. The wound was sutured.

June 15, 2005 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Employee was using a hammer to drive a master link in a feeder chain. One of the blows glanced off resulting in him smashing his finger between the hammer handle and the door frame to the feeder. The finger was fractured and lacerated and required sutures to close.

October 6, 2004 WY · Coal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Struck by... (Not Elsewhere Classified)

Employee was cutting electrical tape with a pocket knife when the knife slipped and cut his left wrist. The laceration required sutures to close.

September 23, 2004 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Thunder Basin Coal Company LLC · Over-exertion in pulling or pushing objects

The employee had experienced several years of chronic shoulder pain. While pulling a chain wrench, it broke and he experienced more pain. He continued to work until October 28 when he underwent surgery. The doctor diagnosed a rotator cuff tear with the underlying cause being a large acromioclavicular spur.

Showing 50 of 64