Mining Incidents

Colorado mining incidents

Every reportable accident on file with MSHA at a Colorado mine. Operators below are ranked by recorded fatality count in this state alone.

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Fatalities recorded
20
Total incidents
6,002
Most recent fatality
2025

Top operators in Colorado by fatality count

  1. 01Holnam Inc1fatal
  2. 02Albert Frei & Sons Inc1fatal
  3. 03Commercial Rock Products Inc1fatal

Recent fatalities in Colorado

Struck against a moving object

A delivery driver employed by a water supply vendor was in route to the facility when the tanker truck overturned and slid off the road. Investigation ongoing

Fall from machine

Employee was shoveling coal off a conveyor belt, belt moved forward causing miner to fall down transfer chute onto belt conveyor that transferred EE to stacker tube where EE fell onto coal pile.

Caught in, under or between a moving and a stationary object

Employee was fatally injured while working on a conveyor system.

Struck by falling object

While lifting a VSI lid a strap broke. The lid struck the victim causing severe head trauma.

Caught in, under or between a moving and a stationary object

Task was to remove screen flare. Employee was loosening bolts, changed work location, dangerously close to excavator, without warning or eye contact with excavator operator. Excavator rotated, bucket of excavator struck employee in the upper chest resulting in death.

Struck by falling object

On August 3, 2017 a miner was fatally crushed while ee was dismantling a metal structure used to supply water to tech fine coal filter at the preparation plant.

Inhalation of radiations, caustics, toxic and noxious substances

Employee went back to rescue down nipper. Carbon Monoxide

Inhalation of radiations, caustics, toxic and noxious substances

Employee went back to check on a post blast and became overcome by Carbon Monoxide from powder smoke. Carbon Monoxide

Caught in, under or between a moving and a stationary object

Witness saw the water truck traveling downhill on Ridge road & then saw a cloud of dust. Truck traveled downhill(9% grade)struck berm on the right side of road ejected operator changed direction & traveled across road striking the berm/slope on the left side of the road. The truck overturned & came to rest. The victim did not appear to use his seat belt. Minor damage to truck.

Fall onto or against objects

Working on a structure 15' high & was safely tied off to structure, when he completed his work, instead of stepping onto platform from beam he was standing on while tied off - he untied and then stepped and fell 8' onto another 5 1/4"" beam with his chest. He walked to the company truck and sat down ambulance arrived, got in and died in route to the hospital.

Caught in, under or between a moving and a stationary object

Employee was cutting a metal band on a bundle of rib screen. When the band broke, the screen expanded and fell on his chest, pinning him between the screen and the Wagner scoop. The screen was lifted off the victim with a skid steer and no pulse was found. The victim was transported to hospital.

Struck by... (Not Elsewhere Classified)

A FATAL ACCIDENT OCCURED WHEN A MINER ATTEMPTING TO EXCAVATE MATERIAL IN A WA900 FRONT END LOADER WAS STRUCK BY A ROCK THAT ROLLED DOWN THE ANGLE REPOSE.

Caught in, under or between a moving and a stationary object

EE WAS FATALLY INJURED.HE WAS CAUGHT IN THE 1ST RETURN IDLER AFTER THE HEAD PULLEY OF THE PRODUCT BELT UNDER THE SAND SCREEN. HIS SHOVEL WAS FOUND ON THE OTHER SIDE OF RET ROLLER & IDLER, HIS HARD HAT WAS FOUND WEDGED IN THE CONVEYOR FRAME OF THE PULLEY SIDE OF RET IDLER. THE PLANT OPERATOR DISCOVERED THE VICTIM DURING A CHECK OF EQUIP. PLANT OPERATOR SHUT DOWN PLANT,

Drowning

THE EMPLOYEE WAS OPERATING A FORKLIFT. THE GROUND SLOUGHED OFF SENDING THE EMPLOYEE AND THE FORKLIFT INTO THE POND.

Struck by powered moving object

THE FRONT-END LOADER OPERATOR WAS BACK-FILLING AROUND A NEWLY INSTALLED TRUCK SCALE WHEN HE BACKED OVER THE VICTIM WITH THE LOADER, WHICH RESULTED IN A FATAL INJURY.

Caught in, under or between two or more moving objects

THE EMPLOYEE ENTERED A LOG WASHER AND DID NOT FOLLOW SAFETY PROCEDURES BY USING A LOCK OUT TAG OUT PROCEDURE. THE MACHINE WAS INADVERTENTLY ENERGIZED WHICH IN TURN RESULTED IN HIS DEATH.

Struck by falling object

THE VICTIM, A LOADER OPERATOR, WAS CLEANING MATERIAL FROM A STACKER CONVEYOR WHEN HE ACCIDENTALLY STRUCK ONE OF THE LEG SUPPORTS, KNOCKING THE CONVEYOR OVER. A SECOND LOADER OPERATOR WAS SUMMONED TO LIFT & RESET THE CONVEYOR. THE RIGGING FAILED AND THE CONVEYOR FELL, STRIKING THE VICTIM AS HE WALKED UNDER THE RAISED CONVEYOR

Fall from ladders

ACCORDING TO WITNESS, EMPLOYEE FELL FROM A SCAFFOLD LADDER FROM AN UNKNOWN HEIGHT.

Struck by... (Not Elsewhere Classified)

OPERATING SHEARER IN TAILGATE, FLIPPED COWL HEADING TO HEADGATE WHEN FITTING BROKE ON BACK FLUSHFILTER AT SHEILD 74. THE HOSE WITH ALL FITTINGS WHIPPED OUT TO FACE AND HIT VICTIM AT SHIELD 76. THE 4,2000 PSI HOSE WITH COUPLER ON THE END HIT VICTIM IN THE FACE RESULTING IN BLUNT FORCE TRAUMA TO FACE AND HEAD.

Struck by powered moving object

AVAILABLE INFORMATION FROM THE SCRAPER OPERATOR AND EYE WITNESS SHOWS THAT THE EMPLOYEE MOVED BETWEEN A BACKING 633 CAT SCRAPER AND HIS PICKUP OUT OF THE OPERATORS FIELD OF VISION. HE WAS RUN OVER BY THE LEFT REAR SCRAPER TIRE RESULTING IN DEATH.

Source: US Mine Safety and Health Administration (MSHA) accident records, kept current weekly. State assignment uses MSHA's FIPS state code on the accident record.