Mining Incidents

Search the record

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
Time period
Experience at time of incident

Alert me on this search

Email me when a new incident matches these filters. One confirmation email; unsubscribe anytime.

The record

456 total records

Showing 50 of 456
March 25, 2026 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STRIKING OR BUMPING
American Colloid Company · Struck against stationary object

Employee sat up, their hard hat fell off, and they bumped their head on the edge of their toolbox. They recieved 12 staples at the Emergency room

October 21, 2025 WY · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
American Colloid Company · Over-exertion (Not Elsewhere Classified)

An employee was moving a 3-inch pump. The employee mis stepped into a soft spot, and right leg got stuck approximately 8 to 10 inches deep in the mud. When the employee pulled their leg out of the mud, they felt their right knee pop. The employee is now using crutches

September 26, 2025 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
American Colloid Company · Struck by... (Not Elsewhere Classified)

Employee was tightening a bolt on a bar disintegrator when the wrench slipped off hitting the employee in the mouth causing a small cut on the upper part of the chin and a chipped tooth.

July 23, 2025 WY · Metal/Non-Metal scraper-loader operator MACHINERY
American Colloid Company · Struck against a moving object

The scraper fell off the push block while push pulling

March 13, 2025 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
American Colloid Company · Fall from machine

Employee fell off of the dozer causing EE brake EE's left collar bone

February 10, 2025 WY · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
American Colloid Company · Over-exertion (Not Elsewhere Classified)

Slipped on icy road

January 27, 2025 WY · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
American Colloid Company · Over-exertion (Not Elsewhere Classified)

Employee was entering skidsteer. Employee placed left foot on the skidsteer and used right foot to push off to get up into it. Employee felt a pop in right knee and was unable to put any weight on it. Employee received medical attention and was treated with x-rays, knee brace and crutches.

December 3, 2024 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
American Colloid Company · Fall to the walkway or working surface

Employees walking down a slope and misstep causing them to fall and tear their ACL and fracture their tibia.

June 27, 2024 WY · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
American Colloid Company · Struck by falling object

Maintenance employee was removing a partial piece of an auger from the rotex deck. The auger caught on the latch as they were lowering it at waist level and it fell to the catwalk where EE was standing. It hit EE's boot across the steel toe and just behind the steel toe. This caused EE's big toe to become displaced and fractured requiring surgery.

May 17, 2024 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee was Push pulling in the pit when the push block got hooked on top of the stinger of the other scraper in front of the employee. When it came off, the scraper slammed down jarring employee's back. Employee was diagnosed with a back strain.

April 16, 2024 WY · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor DISORDERS (REPEATED TRAUMA)
American Colloid Company · (Not Elsewhere Classified)

recordable hearing shift.

February 17, 2024 WY · Metal/Non-Metal mine manager, mine foreman, mine owner SLIP OR FALL OF PERSON
American Colloid Company · Fall from machine

The employee was doing a pre-operation inspection when the employee was filling the coolant of the 16 m blade. Employee bent down to open the engine compartment and woke up on the ground, walked to truck and called for help.

January 29, 2024 WY · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDLING OF MATERIALS
American Colloid Company · Over-exertion in lifting objects

Miner was lifting a roll of shrink wrap to replace an empty roll and felt small popping sensation in right arm.

January 4, 2024 WY · Metal/Non-Metal scraper-loader operator EXPLODING VESSELS UNDER PRESSURE
American Colloid Company · Struck by flying object

A contractor (ICS)(Melgaard Construction Co Inc) was fueling a scraper when EE climbed on top of the scraper and opened the fuel cap. The pressure in the fuel tank then caused the fuel cap to blow off and hit EE in the face splitting EE's lip. Employee received 6 stitches at the ER.

October 14, 2023 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
American Colloid Company · Struck against stationary object

Employee was coming down the ramp when the bucket hit and dug into the ground. The loader came to an abrupted stop causing employee to hit head on the windshield.

August 30, 2023 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee was operating a scraper. While dumping, EE turned to look back at the apron and hit a large bump. EE felt a pop and burning sensation in the lower right side of back. Employee was diagnosed with low back pain, sciatica and prescribed a muscle relaxer.

August 25, 2023 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
American Colloid Company · Over-exertion (Not Elsewhere Classified)

As the employee was finishing barring out a crude hopper, they went to put the bar away and felt a pop in right shoulder, and pain afterwards.

August 4, 2023 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee was operating a scraper on rough roads. EE felt sore when EE got home and then woke up the next day stiff and sore. EE was diagnosed with lumbar strain. EE was prescribed a muscle relaxer and given restrictions.

July 12, 2023 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Caught in, under or between a moving and a stationary object

While operating a CAT scraper, a chunk slipped out from under the scraper tire, jolting the employee around and employees fingers jammed between the joystick (controls). Employee was seen at hospital and has a sprained finger.

July 7, 2023 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee was running scraper push pulling in the cut. Came out of the cut and hit a rough spot on the floor traveling to the dump. After that they single loaded and covered the rough area with material to smooth it out. After lunch EE's neck started to hurt and burn so EE parked the machine and wanted to go get checked out at the clinic.

June 22, 2023 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
American Colloid Company · Caught in, under or between a moving and a stationary object

Was performing end of shift housekeeping duties. Pinched thumb in between cleaning rake and metal frame of conveyor system.

May 1, 2023 WY · Metal/Non-Metal mine manager, mine foreman, mine owner OTHER
American Colloid Company · (Not Elsewhere Classified)

Audiological review due to STS. This employee experienced a recordable degree Standard Threshold shift in the Right ear on the 2023 annual review when compared to the 2006 baseline. The STS was confirmed on subsequent testing. Review of the conservation hearing program records indicates the STS does meet the requirements for recording based on the information provided.

April 10, 2023 AL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer ELECTRICAL
American Colloid Company Mineral Group · Flash burns (electric)

An equipment operator in the mine suffered a burn on right hand from an electrical arc flash. During shift start up at the pre-shift huddle, the operator was attempting to plug a 220-volt floor standing space heater into an outlet when it flashed, resulting in a burn to the operator's palm.

March 27, 2023 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee was loading dirt with the scraper when operator bounced through a deep cut while pulling the can lever. As the operator hit the deep cut, the scraper dropped into the cut. The seat extended all the way up then down, causing the employee to jam arm & shoulder while holding the can lever.

March 21, 2023 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee had been running a scraper in the mining pit with chunks when they finished running the scraper, they had a sore neck.

March 3, 2023 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
American Colloid Company · Fall to the walkway or working surface

An employee was walking to the mobile shop from the parked loader, when EE slid on some mud and fell. As EE tried to get out of the mud, EE's boots became stuck into the mud. Employee lifted right leg, felt a pop in the right knee, and fell to the ground.

January 24, 2023 AL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
American Colloid Company Mineral Group · Over-exertion in pulling or pushing objects

At 8:30 am, a Heavy Equipment Operator who has worked at Sandy Ridge for 8 years with 10 months experience in the mining department was starting a 4-horsepower gasoline powered water pump when EE strained EE's lower back while pulling on the engine starting pull cord.

December 3, 2022 WY · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDTOOLS (NONPOWERED)
American Colloid Company · Struck by... (Not Elsewhere Classified)

Employee was repairing a broken airline on top of tank #6. Employee was cutting new airline to fit in the location. Knife employee was using went through the airline and contacted the employee's left thumb with the open blade.

November 21, 2022 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Employee was operating a scraper and was working in a reclaiming area spreading soil. EE was just starting to dump EE's soil and hit a bump and the seat belt dug into EE's pelvic abdominal area.

October 21, 2022 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
American Colloid Company · Struck by falling object

Employee was hoisting a 55 gallon barrel with a crane and a "choker" sling. During the hoist, the barrel slipped out of the sling and smashed employee's finger.

September 12, 2022 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

A scraper operator working on reclaiming old mining sequence, felt a pop and a sharp pain in the right knee when they pushed on the throttle slowly while traveling through the back fill where a previous scraper dumped and left a wash boarded area from dumping materials.

August 31, 2022 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

An employee was loading material from the 308A series, while leaving the pit to go to the fill. The seat accumulator broke off the bracket and the seat bottomed out, injuring the employees lower back.

August 10, 2022 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
American Colloid Company · Over-exertion in pulling or pushing objects

Repairing leveling valve on a rear suspension of a service truck (unit 622). While moving hoses and valve, reaching around differential, crossmember and frame, twisting and pulling, Employee left shoulder had a very sharp pain on the top and down the front of arm. Employee stopped working for a little while and then continued and finished moving and connecting components.

June 2, 2022 WY · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
American Colloid Company · Fall onto or against objects

Employee was training as a bulk loader with another employee. EE was attempting to close a railcar gate which is underneath the railcar. As EE pulled on the metal bar used to close the gate, the bar broke loose. Subsequently, EE stumbled backwards making contact with the corner of an adjacent railcar with the upper left portion of EE's back/shoulder area.

February 21, 2022 ND · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
American Colloid Company · Fall onto or against objects

An Operator was on top of a grate cleaning a crude bin when EE's foot was caught in the grate. EE's knee gave out and EE fell onto the grate spraining their knee and shoulder.

February 11, 2022 WY · Metal/Non-Metal dryer operator, kiln operator, dry plant operator, fluid operator, bed dryer operator STEPPING OR KNEELING ON OBJECT
American Colloid Company · Struck against stationary object

Employee was loading rail cars and walking on/near the tracks. EE felt a poke in the foot and discovered a piece of wire had punctured the sole of EE's boot and entered EE's foot.

January 7, 2022 WY · Metal/Non-Metal scraper-loader operator SLIP OR FALL OF PERSON
American Colloid Company · Fall to the walkway or working surface

Employee was walking away from the scraper, slipped on snow causing their right leg and knee to buckle.

December 21, 2021 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Loader operator hit a bump while operating loader causing the right elbow to hit on the arm rest. This resulted in a sprain/strain injury.

October 5, 2021 WY · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant HANDLING OF MATERIALS
American Colloid Company · Over-exertion in lifting objects

Lab tech lifted bucket (approx. 20 lbs.) about 36 inches over a rail to dump into a dumpster felt a pop. EE refused medical care at that time, iced and monitored it. Next day EE stated it felt better. On 10-26-21 EE stated it wasn't getting better and wanted to see a Dr. EE was given restriction and Tylenol. On 11-24-21 MRI was performed. Surgery was scheduled for 12-16-21.

August 4, 2021 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Scraper operator was at the dump emptying their scraper with their left foot on the brace when they hit a bump and bottomed out the seat and rolled their left ankle.

July 2, 2021 WY · Metal/Non-Metal scraper-loader operator POWERED HAULAGE
American Colloid Company · Struck against a moving object

Equipment operator was cleaning out overburden using a Scraper when they ran over a piece of rock causing a jarred effect on the employee. Employee later experienced neck soreness.

January 28, 2021 WY · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
American Colloid Company · Struck against a moving object

Stuck material from first loader bucket into main trailer landed harshly jarring the truck. Afterward, driver reported pain in EE's lower back.

January 17, 2021 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
American Colloid Company · Fall from machine

Dozer operator was climbing out of the #121 dozer to go inform maintenance that the #126 dozer was defective. While descending from the equipment, the leg slipped on the ice/snow that had built up on the deck and the employee landed on the tracks. This resulted in a shoulder sprain.

October 7, 2020 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (REPEATED TRAUMA)
American Colloid Company · (Not Elsewhere Classified)

Standard threshold shift to left ear

September 2, 2020 WY · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
American Colloid Company · Over-exertion in pulling or pushing objects

Employee was doing a pre-trip inspection on a truck. Employee went to remove the bolts that hold the grill guard in place and felt some pain in right shoulder.

January 14, 2020 WY · Metal/Non-Metal drill operator SLIP OR FALL OF PERSON
American Colloid Company · Fall to the walkway or working surface

Employee was walking across a road with ice and snow on it and feet slipped out from under them. They hit an elbow and jarred a shoulder.

January 13, 2020 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
American Colloid Company · Bodily reaction, (Not Elsewhere Classified)

Employee was doing a PM on a baghouse rotary lock. Employee was kneeling down on the floor, with a foam knee pad, installing a new chain. When the employee got done employee stood up and left knee popped.

November 23, 2019 WY · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
American Colloid Company · Fall to the walkway or working surface

Employee was cleaning rail cars. Employee came to a door that was difficult to open and pushed on the bar employee was using harder. The door freed up and the employee hit the ground with left shoulder.

November 11, 2019 WY · Metal/Non-Metal scraper-loader operator SLIP OR FALL OF PERSON
American Colloid Company · Fall from machine

Employee was shutting down the rear engine on the scraper. Employee lost footing when climbing down and could not regain control. Employee fell, pulling a muscle in right shoulder.

Showing 50 of 456