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

75 total records

Showing 50 of 75
April 1, 2026 AZ · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
UNACEM North America · Struck by flying object

The employee was attempting to calibrate the TA duct damper with a manual handle. While operating the gate with the LCB, the damper was moved to a fully open position. The employee applied firm pressure to move the manual operation handle, the counterweight pulled down, and the handle began spinning rapidly in an uncontrollable manner with heavy force.

July 7, 2025 AZ · Metal/Non-Metal lab technician HANDLING OF MATERIALS
UNACEM North America · Contact with hot objects or substances

EE stated they were collecting quality control samples from the stage 6 sample port when they were splashed by hot material on their left hand, burning through the glove.

April 16, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
UNACEM North America · Struck by... (Not Elsewhere Classified)

The mechanic was climbing out of a small man door after making repairs to the chute when the angle grinder they were using inadvertently turned on, cutting the employee's arm. The employee was taken to the hospital for treatment and returned to work today. Installing another door for safer access to the chute.

January 20, 2025 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
UNACEM North America · Inhalation of radiations, caustics, toxic and noxious substances

Employee was clearing the opening of a vertical discharge pipe for the Cement Kiln Dust (CKD). The discharge of previous ckd had prevented the flow of discharge and had created a back-up. Employee used a rake to remove blockage at which point the material quickly flowed from pipe causing ckd to go airborne dusting the employee. The employee inhaled the material.

October 11, 2024 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
UNACEM North America · Struck by flying object

The employee while repairing an excavator bucket, after finishing a welding EE proceeded to clean it with a metal wire brush attached to an air grinder, a piece of metal ricochet inside the employee welding helmet used as face shield and got in EE's left eye, welding helmet had a crack from where is presumed the foreign body may entered

July 31, 2024 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
UNACEM North America · Struck by... (Not Elsewhere Classified)

Employee was notching skirting for bolts while kneeling and cutting toward self received a laceration requiring stitches.

June 11, 2024 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
UNACEM North America · Struck against a moving object

While operating the loader, the operator was on the way to the stockpile to get a bucket of material, the teeth of the bucket dug into the ground causing the loader to stop suddenly, projecting the operator into the windshield, cracking the windshield and hurting the operator's forehead and neck.

June 10, 2024 AZ · Metal/Non-Metal clerk, timekeeper, office worker, director of sales SLIP OR FALL OF PERSON
UNACEM North America · Fall to the walkway or working surface

High heat warning for Yavapai county last ten days. Employee had been fasting for 24 hours prior contributed to this event. Employee received two staple to close a wound on the head.

April 1, 2024 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
UNACEM North America · Fall onto or against objects

Employee was working in raw mill duct with vac tube. EE was on hands and knees and turned around inside the duct which caused retractable lifeline cable wrapped around ankle. When EE crawled forward caused EE to fall forward impacting one rib on left side from raised metal lip around door entry. Hairline fracture diagnosis.

January 11, 2024 AZ · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management HANDLING OF MATERIALS
UNACEM North America · Over-exertion in lifting objects

The worker and a coworker were unloading an empty plastic tote from a pickup truck. Doing that, the worker felt a pull in left biceps. The worker got first aid and continued working thinking that was a simple contraction due to cold weather. The worker was still in discomfort and after an MRI scan, EE was diagnosed with a disruption of the distal bicep on 2/9/24, requiring surgery.

January 6, 2024 AZ · Metal/Non-Metal dispatcher SLIP OR FALL OF PERSON
UNACEM North America · Fall down stairs

The employee suffered a grand mal seizure (employee has history of grand mal seizures) that caused EE to fall down a set of steel steps, hitting EE's head and requiring stitches.

June 15, 2023 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
UNACEM North America · Caught in, under or between a moving and a stationary object

Maintenance Mechanics (R) hand was caught between the flange of a level indicator pipe for a knife gate and the housing of the Raw Mill Roll Press during maintenance activities to repair the knife gate. The equipment was locked out but the gate was not blocked/secured to prevent movement.

April 27, 2023 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
UNACEM North America · Struck against stationary object

The employee was pulling on an oil fill hose to wrap it up and hit elbow against a concrete block.

April 3, 2023 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
UNACEM North America · Struck by flying object

Employee was working on the burn deck, trying to close the burn pipe door on the kiln, when a gust of wind blew fiberglass insulation material into the employees right eye. The employee was taken to an ophthalmologist, given a prescription antibiotic and was told to be off-work for one day.

April 3, 2023 AZ · Metal/Non-Metal electrician, lineman OTHER
UNACEM North America · Struck by flying object

On April 3rd, 2023. Employee was working on the second floor of the preheat tower installing conduit and wiring for the new kiln gas analyzer. The wind picked up around mid-morning suspending a lot of fugitive dust and debris making it airborne. The employee's eyes became irritated from the airborne particles.

March 15, 2023 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POISONING (TOXIC MATERIALS)
UNACEM North America · Inhalation of radiations, caustics, toxic and noxious substances

Medical determination that employee suffered occupational illness (asthma) from exposure to hazardous gases during work and subsequent rescue activities of another employee from the Plant's Coal Silo.

March 15, 2023 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POISONING (TOXIC MATERIALS)
UNACEM North America · Inhalation of radiations, caustics, toxic and noxious substances

Employee was inside the coal silo, conducting clean-up duties with another employee, when they became unconscious due to elevated CO levels.

February 15, 2023 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
UNACEM North America · Over-exertion in lifting objects

During the process of cleaning up after maintenance work on the Crusher, the employee hoisted a tool bucket over EE's shoulder and then attempted to lift the welder, in order to carry everything out of the Crusher area at one time. The employee felt the pain immediately in their ribcage area.

May 24, 2022 AZ · Metal/Non-Metal electrician, lineman STEPPING OR KNEELING ON OBJECT
UNACEM North America · Rubbed or abraded

NO PARTICULAR EVENT OR INCIDENT AT WORK CAUSED EE'S KNEE TO START HURTING HOWEVER EE HAD BEEN DOING A FAIR AMOUNT OF KNEELING AND CROUCHING PERFORMING GROUND CHECK INSPECTIONS AND THE FOLLOWING DAY EE WOKE UP WITH PAINFUL SWOLLEN KNEE INFECTED (SEPTIC BURSITIS)

May 15, 2022 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
UNACEM North America · Struck by... (Not Elsewhere Classified)

SEPARATING GEARBOX FROM MOUNTING TO MOTOR GEARBOX MOUNT. FORKLIFT WAS BEING USED TO SUPPORT DURING DISASSEMBLY, WHEN GEARBOX WAS UNBOLTED FROM MOUNT THE FRAME KICKED BACK STRIKING EMPLOYEE KNOCKING EMPLOYEE UP AGAINST FORKS ON THE FORKLIFT CAUSING BRUISING TO STOMACH

May 12, 2022 AZ · Metal/Non-Metal miner, prospector, nec POWERED HAULAGE
UNACEM North America · Caught in, under or between a moving and a stationary object

PERSONNEL ATTEMPTED TO USE SKID STEER TO MOVE COAL OVERSIZED TIPSTER INTO LOAD & HAUL POSITION. OPERATOR LOWERED THE BUCKET ONTO THE TIPSTER WITHOUT SEEING PARTNERS HAND IN A PINCH SQUEEZE BETWEEN THE TWO RESULTING IN A PARTIALLY CRUSHED RIGHT PINKY FINGER.

April 1, 2022 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
UNACEM North America · Caught in, under or between a moving and a stationary object

Employees were attempting to level the base of a scaffold. While trying to level the base, concrete clinker material of various sizes broke loose from the sides of the cyclone. A piece of the material struck the employee on the left pinky finger crushing it between the clinker and scaffold material. The employee underwent surgery where pins were placed in EE's finger.

February 18, 2022 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech EXPLODING VESSELS UNDER PRESSURE
UNACEM North America · Struck by flying object

After turning off the loaded bucket elevator the back stop failed and the bucket elevator overspeed backwards which overspeed the fluid coupling causing it to explode. Pieces from the fluid coupling struck EE in the back. The pieces broke EE's ribs and ruptured EE's spleen and bruises.

July 23, 2021 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
UNACEM North America · Bodily reaction, (Not Elsewhere Classified)

Clinker cooler baghouse compartment #2. Inspecting bags for damage. Entered top of #2 compartment, Removed #2 compartment hatch cover. Stacked the hatch cover on top of the adjacent hatch covers. Crossed the top of the stacked hatch covers stepping off landed on right leg, slightly off balance and harder than expected impact, injuring back.

May 11, 2021 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
UNACEM North America · Struck by... (Not Elsewhere Classified)

Worker was cutting conveyor belt with box cutter style knife & pulled knife into calf of right leg causing a laceration

March 21, 2021 AZ · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
UNACEM North America · Struck by... (Not Elsewhere Classified)

Secured cable by wrapping control rope around hand to aid in controlling whip once cable cut for West Kiln Feed bucket elevator. Although the cable was restrained it was not tied to the point of connection allowing a distance of approx. 8" to 10" drop. Pulled hands, hurting right hand.

January 24, 2021 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
UNACEM North America · Over-exertion in lifting objects

Replacing air cannon from the firing head to lower down to scaffolding. While lowering air cannon weighed more than thought pulling a muscle straining right shoulder.

January 10, 2021 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
UNACEM North America · Struck by flying object

Employee was installing steel members with rigging without using proper procedures at new silo, causing a hook to slip and impact employee. Employee was taken to the hospital, X-ray determined a fractured jaw. Employee was not trained in proper rigging procedures.

October 23, 2020 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
UNACEM North America · Caught in, under or between a moving and a stationary object

opening door to A building, Door suddenly shut catching left index finger on the hinge

December 15, 2019 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
UNACEM North America · Caught in, under or between two or more moving objects

Gear box of shaker screen at crusher system, loosening bolts with torque wrench when middle left hand finger got between wrench and bolt pinching finger causing laceration.

November 14, 2019 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
UNACEM North America · Struck by falling object

Cutting a steel plate and on final cut it dropped towards the ground and contacted EE's knee.

August 1, 2019 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDTOOLS (NONPOWERED)
UNACEM North America · Caught in, under or between a moving and a stationary object

WHILE PINNING AND PLATING THE BAUXITE WEIGH FEEDER, WAS SWINGING SLEDGE HAMMER AND IT GLANCED OFF AND DOWN SMASHING EMPLOYEE'S FINGER INTO THE LIP OF THE BAUXITE DOOR

March 19, 2019 AZ · Metal/Non-Metal welder (non-shop) FALLING/SLIDING/ROLLING MATERIALS
UNACEM North America · Struck by falling object

Employee was welding in the cement cooler. A piece of refractory broke from the wall, fell about 15 ft. and struck the employee on the hard hat and neck. The employee suffered a closed head injury and neck sprain.

March 19, 2019 AZ · Metal/Non-Metal welder (non-shop) FALLING/SLIDING/ROLLING MATERIALS
UNACEM North America · Struck by falling object

Employee was welding in the cement cooler. A piece of refractory broke from the wall, fell about 15 ft. and struck the employee on the hard hat, neck and shoulder. The employee suffered a broken scapula, neck sprain and contusions,

February 22, 2019 AZ · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant HANDLING OF MATERIALS
UNACEM North America · Caught in, under or between (Not Elsewhere Classified)

Working on Raw Mill Sampler pinch tip of left index finger causing laceration

July 2, 2018 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
UNACEM North America · Caught in, under or between a moving and a stationary object

Adjusting the forklift tines and the middle finger on right hand got pinched in between the tine and fright guard

June 28, 2016 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
UNACEM North America · Struck by... (Not Elsewhere Classified)

Employee received 2 lacerations on the right hand from a hand tool while troubleshooting a motor sensor.

January 4, 2016 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
UNACEM North America · Struck by flying object

Shooting out coating in the Calciner Loop duct, Day was windy and dust got in Left eye.

November 16, 2015 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
UNACEM North America · Caught in, under or between a moving and a stationary object

Employee was removing a metal liner and caught right thumb between liner and mill shell. Employee was taken to clinic and diagnosed with a fractured thumb and received sutures.

July 3, 2015 AZ · Metal/Non-Metal mason MACHINERY
UNACEM North America · Caught in, under or between a moving and a stationary object

The JTT miner had not noticed the pressure gauge of the kiln rig jack system had broken. The JTT miner over pressurized the jack causing it to break. This caused the brick to pinch the tip of the left middle finger between the brick and jack.

December 14, 2014 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
UNACEM North America · Struck by... (Not Elsewhere Classified)

Manually closing T/A Damper with hand crank, crank started spinning on its own and hit right hand.

December 5, 2014 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
UNACEM North America · Over-exertion in lifting objects

Filled 5 gal. buckets and carried them to the discharge of the lanes. From there filled a wheel barrel and carried that to the back end of the cooler. When picking up buckets of clinker felt pain in abdomen that increased.

March 31, 2014 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STEPPING OR KNEELING ON OBJECT
UNACEM North America · Struck against stationary object

Looking ahead did not notice a step in the concrete. Stepped off and felt a sharp pain in right foot

August 24, 2012 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
UNACEM North America · Struck by... (Not Elsewhere Classified)

Dust blew in eyes.

February 1, 2012 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
UNACEM North America · Struck by... (Not Elsewhere Classified)

Changing door, door opened and hit employee on hard hat.

October 25, 2011 AZ · Metal/Non-Metal electrician, lineman SLIP OR FALL OF PERSON
UNACEM North America · Struck by... (Not Elsewhere Classified)

The men were already started on their task for the day, tools and equipment had been laid out to use, the weather changed from overcast to raining. Started to gather up the tools to move them to an inside area, EE was carrying a pony threader, tripped over a cord, fell and the pony threader landed on his finger causing a fracture.

Showing 50 of 75