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

69 matching records

Showing 50 of 69
February 19, 2026 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

EE fell 10ft 10in while leaning out a 11-1/2 in opening between a screen and adjacent handrail trying to look at the screen springs.

December 19, 2025 MI · Metal/Non-Metal ball/rod/pebble/hand/limestone/dry mill operator, roller operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall down stairs

EE slipped down an icy stair way and landed on their arm, resulting in a dislocated shoulder.

May 29, 2025 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

EE was pulling the fuel hose out of the fuel truck, as EE was pulling the hose out of the fuel truck, EE was walking backwards pulling the hose and EE tripped on a couple of large rocks causing EE to fall and twist EE's ankle.

March 7, 2025 MI · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

ee was spotting a haul truck, and as the ee was walking backwards, tripped over some loose stone/uneven ground and fell resulting in lacerations to hands and legs.

January 30, 2024 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

Employee was working in the mine companies shop in good, dry conditions. Employee was repairing a Motor Grader and was working on the turntable, about 2 feet off the ground. When they went to get down off the turntable they missed the step and fell 2 feet to the ground, injuring their left hip.

September 29, 2023 MI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

ee was climbing the access ladder to CAT haul truck. Gloved hand slipped causing ee to lose balance and fall to the ground. ee was on bottom rung of ladder. incident was reported on 9/29. EE sought initial medical treatment on 12/11 - evaluated on and work restrictions issued on 12/18.

August 12, 2023 MI · Metal/Non-Metal utility man, shift tech, service/dump truck operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from scaffolds, walkways, platforms

EEs were replacing deck plate on walkway. EEs left area then one returned to get a tool. Fell through opening in walkway, appx 13' to ground level. EE sustained cut to right hand and possible injury to vertebrae.

January 18, 2023 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

Ee was assisting with lifting a bearing housing. Bearing lost balance and ee tried to catch it, but lost own balance in the process. EE tried to catch themselves by using hand railing, resulting in strain to shoulder. Was a report only until 5/1/23 when ee started to receive physical therapy for injury - company notified on 5/3/23.

December 2, 2022 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from scaffolds, walkways, platforms

Employee fell through opening in walkway.

February 1, 2022 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Employee tripped on piece of floor plate/grate, and fell resulting in bruising to right ribs/shoulder. Placed on light duty work restrictions.

May 28, 2021 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

After finishing loading a boat, injured walked up the stairs to shut power off in 2 north tunnel. While walking up the stairs injured felt a pop in their knee.

May 15, 2021 MI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

Employee was walking from the caboose back to the 7523 engine to restart it after stalling. EE was in the process of dumping cars and was walking along the dump shack parking area. While walking along the track, EE stepped in a hole twisting EE's right ankle.

November 1, 2019 MI · Metal/Non-Metal plumber, pipefitter, millwright SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

Employee was attempting to use a pipe wrench to roll a conveyor backward in order to dislodge some oversize that was wedged between the feed chute and belt. The employee slipped, resulting in a fractured ankle.

February 15, 2018 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall onto or against objects

Employee was climbing up onto D9T dozer, foot slipped off of track grouser and caused scrape and deep bruising. The employee reported the incident on 2/19/2018. The employee sought medical attention on their own over the weekend. On Monday, employee was still in pain and was taken to the ER, where they were diagnosed with a bacterial infection.

December 5, 2016 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from ladders

Employee was washing in mill basement getting area clean for final shutdown. EE noticed an above ground flume was plugged with stone causing water and material to drop on floor. The employee got a 8ft step ladder and climbed up to 3rd step to put wash hose into clean-out. The pressure on the hose caused EE to lose balance and EE slipped off ladder.

June 20, 2016 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Boat was docking and throwing heaving lines and when the EE attempted to catch it the EE stepped into a hole/washout on the dock. The EE fell and twisted right ankle.

February 19, 2016 MI · Metal/Non-Metal plumber, pipefitter, millwright SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Caught in, under or between (Not Elsewhere Classified)

Employee was exiting vehicle when EE slipped on the vehicle's running board and fell to the ground. EE's right leg was caught in the cab of the truck and as EE fell EE felt a pop in knee.

January 25, 2016 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

When EE's left foot stepped from the ladder onto the surface it slipped from the ladder to a cleat in the walkway. The EE was able to catch self with EE's right arm by hanging onto a ladder rung. The EE felt strain in shoulder and knee but continued working. Asked to see a doctor on 2/4/2106 at which time EE was placed on restriction

February 13, 2015 MI · Metal/Non-Metal plumber, pipefitter, millwright SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

Employee slipped and twisted his knee when he was coming down from the hill. He caught himself but twisted knee. Site conditions were snow covered and slippery in some areas.

November 28, 2014 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Employee was walking across loading dock area between shuttle and lunch room when he slipped and fell. Area had received 1" of snow, underlying ice was not obvious.

June 25, 2014 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Employee was cleaning up stone that had spilled off a conveyor from previous loading. He slipped on loose particles that were on concrete surface and landed on shoulder and elbow. Minor scrapes occurred on arm, a large contusion formed on elbow, and soreness was reported in shoulder. Local med provider placed him on a lifting restriction. Possible rotator cuff issue.

May 10, 2013 MI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

Employee was climbing down haul truck steps. When he stepped from the bottom step to the ground he felt pain in his left knee. The ground onto which he stepped was level and bottom step is 28" above ground. Employee claims he continued working thinking the pain would go away. HS Management received indication of desire to seek evaluation on 5/17/13.

May 7, 2013 MI · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

Employee was on stone carrying train, and had stopped train to dump stone from cars. He took the remote controller in hand and started to descend from train, when he stepped on broken controller strap and fell about 2 1/2 feet. He landed on his feet but the impact jarred his back and he felt pain. Sought medical care after that.

April 20, 2013 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall onto or against objects

Employee reports that when walking up the screen tower he slipped on ice and his knee struck the midrail of the handrails along the walkway. Medical treatment was sought about 3 months later.

April 12, 2013 MI · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Employee exited road grader that was being used to grade road areas after a significant snowfall. Upon exiting the grader he slipped onto ice and broke a rib(s). Surface had snow/ice. He did not fall onto anything other than the ground.

February 27, 2013 MI · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Employee was walking with sledge hammer over shoulder going back to tool room after using it to knock down ice that was hanging off a building. As he was walking his feet went out from under him and he landed on his right shoulder. The area that he was walking in had not been sanded, although surrounding areas had been.

September 18, 2011 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

While climbing stairs on 8' platform to loading shuttle, grating failed, employee able to catch himself, so he did not fall. He did not request medical attention at this time. On January 11, 2012 he went to his doctor who gave him an injection into his shoulder and he was sent home by physician.

June 9, 2011 MI · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

Employee walked around train to shovel spillage, stepped in oil, slipped and fell. He reported it that day. However he did not go to the doctor until July 26, 2011. He was then prescribed physical therapy.

February 11, 2011 MI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

Stripping in east quarry, a cedar tree came off the bank onto the loader across the bucket & windshield. In an effort to remove the tree from the loader without damaging the windshield, employee climbed on top of the loader bucket. As he tried to move the tree, it moved & knocked employee to the ground. His back and head struck the ground.

April 23, 2010 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

While walking to his work area he stepped off a grading and into a 3" trough causing his ankle to twist.

January 15, 2008 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to lower level, (Not Elsewhere Classified)

Employee was helping carry a calrod heater, walking backwards between screen deck and bonnett and his foot slipped off end of plywood and went into lime burning chute.

March 22, 2007 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall onto or against objects

EE was welding on a railcar I-beam. Stood up and welding helmet fell off. EE went to jump down to pick up welding helmet on the ground, striking head against corner of railcar.

March 20, 2007 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall onto or against objects

The repairman was rebuilding a chute. He had to climb down the 54 inch chute to the bottom to take a measurement. While standing on the chute taking measurements, he started to slide forward because of dirty material lying on the chute steel. His left foot toe caught the side of the chute causing his foot to twist outward away from its normal position.

April 29, 2006 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

The millwright was kneeling on a conveyor belt that was laying on the idler deck, as he repaired the belt. The idler deck was elevated 36 inches above the concrete floor. As the millwright tried to climb off the belt, he caught his foot and jacket on an idler. He then lost his balance which caused him to fall off the conveyor and land on the floor.

January 25, 2006 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall onto or against objects

On 150 Screen, working on 140 stone box - going down, slipped - striking left elbow and hip on screen deck.

December 3, 2005 MI · Metal/Non-Metal barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from ladders

The boat loader leader was climbing a 5 foot steel ladder to get into a flume under the loading shuttle to clear some ice. As he climbed the ladder, two of the steel rungs failed which caused him to fall. He caught himself with his right arm and climbed into the flume. His right shoulder was badly strained and resulted in 3 days off of work.

December 1, 2005 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

The millwright was walking across the mill 4th floor by the surge bin when he tripped and fell on his left knee causing a bruise. He had stumbled over a 3 inch raised section of concrete in the floor. The injured lost one day of work.

August 16, 2005 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

Employee was climbing up a Cat 785B. He was wearing rubber gloves and there was dew on the railing. Employee slipped falling about 10 to 12 feet and broke his right ankle.

May 19, 2005 MI · Metal/Non-Metal master mechanic, foreman, supervisor SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall onto or against objects

The mechanic leader crawled into the hydraulic pump area to fix a hydraulic leak on the #691 front-end loader. After he finished the work, he bumped and bruised his knee as he was coming out of this area. His knee became infected and on 5/31/05, he began losing time.

April 23, 2005 MI · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

The Cat 150 ton truck driver was descending the ladder on truck #5 while holding the operator's report in his left hand, when his foot slipped. As he slipped, he grabbed for the handrail with his left hand but could not stop himself from falling off the ladder, 5 feet to the ground. He landed on his rear end which resulted in a fractured vertebra.

December 13, 2004 MI · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall to the walkway or working surface

The injured had put the snow-blower back into the storage barn after cleaning snow from the sidewalks and began walking across the parking lot to the main office. As he walked through the parking lot where a loader had plowed the snow, he slipped and fell on his right elbow. He had surgery to correct the injury on 4/5/05.

June 24, 2004 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Over-exertion (Not Elsewhere Classified)

EE was fixing a hand rail on a Hitachi 20.5 Cy Shovel. When he stepped on a raised portion of the oil tank, he twisted his foot and later found out he had a small chip out of his bone.

June 9, 2004 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from ladders

The pipefitter was climbing a ladder in P-2 tunnel when the bottom of the ladder began to slide away from the wall. He then jumped off the ladder from a height of about 3 feet and fractured his foot.

May 31, 2003 MI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
O-N Minerals (Michigan) Company · Fall from machine

THE MECHANIC TRIPPED OVER PAD-EYE ON THE REAR DECK OF THE HITACHI SHOVEL AND FELL. HE SPRAINED HIS LEFT HAND AND WRIST. ON 6-10-03 THE INJURY BECAME LOST TIME.

Showing 50 of 69