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
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The record

787 total records

Showing 50 of 787
May 20, 2026 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Fall to the walkway or working surface

The employee met with supervisors in a parking lot on the east side of the building. After the conversation, EE turned to walk back to the office and tripped over a wheel chock (angle iron) because EE did not fully clear it. EE fell onto EE's right knee and elbow. EE was wearing steel-toe boots, and no other PPE was involved.

May 5, 2026 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

Employee felt a groin strain while cleaning but delayed reporting it until the end of the shift when the pain persisted.

April 24, 2026 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STRIKING OR BUMPING
Freeport-McMoRan Sierrita Ops. · Struck against stationary object

Employee inspecting a hose stood up in a confined space and struck their hard hat on a frame causing their jaw to snap shut and chip a tooth with a minor gum laceration.

April 22, 2026 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Contact with hot objects or substances

Employee used Brakleen to remove hydraulic oil from their hands; after doing so they took a smoke break causing burns to their hands.

April 18, 2026 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

The operator was dismounting equipment using a ladder when they experienced pain and noted swelling in the knee.

March 30, 2026 AZ · Metal/Non-Metal warehouse, supply handler HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Fall to the walkway or working surface

While employee was removed tires from a connex for delivery, they noticed overlap of tires with an adjacent stack. As additional force was used to move the overlapped tire, the adjacent stack became unstable causing some tires to fall and strike the employee which resulted in the employee falling and straining their back.

March 22, 2026 AZ · Metal/Non-Metal drill helper MACHINERY
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

Employee was tailing a core tube out from a ct-20 to pull the sample. While tailing out the tube, the Kelly hose snagged on the wire line causing slack. As the tube came up changing the angle releasing the slack, dropping the back side of the tube 1 foot causing a strain on the helper right shoulder

March 2, 2026 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Freeport-McMoRan Sierrita Ops. · Struck by flying object

Employee experienced eye irritation from an unknown particle and attempted to flush their eye; later in the shift the irritation persisted and the employee was seen for an eye abrasion.

January 16, 2026 AZ · Metal/Non-Metal drill helper DISORDERS (REPEATED TRAUMA)
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

On 1.21.2026 Employee reported soreness in the right bicep that developed over time while performing normal work duties. Employee noted that on 1.16.2026 EE's shoulder had popped while adding a stick of HWT pipe to a drill string going in. Employee also noted that EE's shoulders pop on occasionally and thought the pain would stop, as pain increased, employee reported the injury.

January 2, 2026 AZ · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Fall from scaffolds, walkways, platforms

While climbing a pipe crossover, the individual's hands slipped from the handrail, causing a fall to the ground where they impacted their shoulder and elbow.

December 30, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Freeport-McMoRan Sierrita Ops. · Struck against stationary object

During routine maintenance of the secondary slitter, the mechanic was adjusting the cutting wheels. While loosening the set screw, the employee's right hand thumb area made contact with the cutting blade, resulting in a laceration.

December 22, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

While walking the third floor of the secondary crusher area, the employee reported stepping on an uneven surface and subsequently experienced a sensation in the left leg.

November 10, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver MACHINERY
Freeport-McMoRan Sierrita Ops. · Struck against a moving object

CAT79 experienced a rough load event while being loaded by Shovel 44, positioned on the outer edge of the cut and working in course material.

November 6, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver MACHINERY
Freeport-McMoRan Sierrita Ops. · Struck against a moving object

Haul truck CAT82 was in the process of being loaded by Shovel 44 when, during the initial bucket load, a concealed boulder within the material struck the truck bed, resulting in a rough loading event.

October 6, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver OCCUPATIONAL SKIN DISEASES
Freeport-McMoRan Sierrita Ops. · Absorption of radiations, caustics, toxic and noxious substances

At 4 am a haul truck operator began to feel itchy. EE went to the restroom and discovered red bumps (rash) on EE's body. EE notified supervision.

October 3, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

EE was installing belt on pulley. EE's finger became caught between the pulley and the belt, amputating the tip of EE's right ring finger. EE was taken to the hospital for treatment. Taken off work.

September 30, 2025 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Freeport-McMoRan Sierrita Ops. · Struck by... (Not Elsewhere Classified)

EE was working on cleaning out mixer. EE picked up a pry bar to break loose hardened material from mixer flights. While doing so, the ee hit the buildup of material and the force from pry bar hit EE in the face near EE's eyebrow / forehead area. EE suffered a laceration and needed stitches.

September 28, 2025 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

EE was using a swing gate to access a ladder. When EE let go of the gate, it swung back closed. The EE's finger was struck and it began to swell. Near the end of shift the EE informed supervision of the incident. EE was taken to the clinic and x-rays were done. EE had fractured EE's middle finger. EE was taken off work.

September 24, 2025 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in lifting objects

EE was assisting a group of co-workers with moving a Knaack box into the Crush/Convey maintenance shop. EE was lifting on side of the box and then they realized they needed additional help due to the box being too heavy. After they were done the EE began to feel lower back pain. EE was seen and released. On 9/29/25 EE was issued Physical Therapy.

September 16, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

EE was removing a 20" hugger with an impact when the nut came off of the bottom half of the hugger it dropped. The EE caught it and tweaked EE's back in the process. On 9/19/25 EE was seen and sent back to work. On 9/25/2025 EE was issued physical therapy.

August 27, 2025 AZ · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in lifting objects

EE was working on greasing fine ore feeder motors. They picked up a grease gun & felt a pop in their elbow. They continued to work & grabbed the grease gun again & felt another pop with instant pain. They reported it to supervision & was seen at the clinic & released. On 9/10/25 they went back to the clinic & was issued restrictions for an elbow strain.

August 23, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OCCUPATIONAL SKIN DISEASES
Freeport-McMoRan Sierrita Ops. · Rubbed or abraded

Employee was changing a sump pump while working in a muddy area; irritation from right foot friction with muck boots resulted in localized swelling and redness. Reported to supervisor on 08/25/25.

August 7, 2025 AZ · Metal/Non-Metal ENTRAPMENT
Freeport-McMoRan Sierrita Ops. · Accident type, without injuries

On 8/7/2025, Mill control stated that an employee was stuck in the east freight elevator at the mill. MSHA was notified and at 1:06 pm the EE was freed from the elevator. Elevator company was dispatched to scene and freed the EE. Investigation is on-going.

July 23, 2025 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by falling object

During the harvest process at Tankhouse, ee had to remove a cathode, weighing approx. 152 lbs on the strongback prior to unloading. The ee lowered the strongback to approx. shoulder height to detach the cathode by removing the hanger bar. The loop failed and broke off, landing on the ee's foot. EE sustained a fracture and laceration. Received stitches and taken off work.

July 15, 2025 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by falling object

EE was ball charging in the Mill. The bin became low. They used a ball to throw up into the bin to attempt to get more balls to come down. EE was wearing impact gloves. The balls started to come down and pinched their left pinky finger, causing a fracture to the distal tuft (tip of finger). Was released back to work wrapped with coban.

July 3, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

RAM Belt Team was performing work on the 8D feeder belt. While maneuvering the I-beam on the deck, two RAM employees - one pulling and one pushing - attempted to slide the I-beam into position. During this process, one team member's right pinky finger was pinched between the I-beam and the structure.

June 29, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Fall from machine

EE was dismounting a haul truck from night shift. EE was on the lower platform of the truck when EE's backpack became hung up on the handrail. As EE was trying to free the backpack, EE lost EE's footing and fell to the ground. EE sustained a laceration to EE's face and soreness in EE's neck. EE received 13 stitches and was taken off work.

June 24, 2025 AZ · Metal/Non-Metal mechanic helper HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by flying object

EE was removing placement bars on the reject chute cover. The last bar was under tension and when it released it struck EE in the face. EE sustained a broken tooth and a laceration to EE's mouth. EE received 8 stitches.

June 16, 2025 AZ · Metal/Non-Metal clerk, timekeeper, office worker, director of sales SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

EE was providing a site tour to auditors. EE was walking out of the man van and twisted an ankle without feeling pain. EE notified supervisor was treated and released. On 8/13/2025 they were diagnosed with a nondisplaced microtrbecular fracture. EE was also issued PT.

June 11, 2025 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator DISORDERS (PHYSICAL AGENTS)
Freeport-McMoRan Sierrita Ops. · Contact with heat

EE was showing other employees how the computers are utilized in the office building. EE began to feel ill. ERT was contacted and EE was taken to the hospital for further evaluation. Diagnosed with dehydration.

May 6, 2025 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDTOOLS (NONPOWERED)
Freeport-McMoRan Sierrita Ops. · Struck by... (Not Elsewhere Classified)

Employee was working on a buggy whip when the screwdriver being utilized slipped and penetrated the right index finger. Employee received stitches and was released to work.

April 30, 2025 AZ · Metal/Non-Metal FIRE
Freeport-McMoRan Sierrita Ops. · Accident type, without injuries

Motor grader fire. Unknown cause. Operator exited equipment and issued a Mayday. Local fire department and FMI water trucks responded.

April 30, 2025 AZ · Metal/Non-Metal plumber, pipefitter, millwright HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

Employee was removing liner plates. While handing an 8" x 4' piece from the regrind cell to the employee standing on the deck. Their finger was caught between the piece and the handrail.

April 30, 2025 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Fall from machine

EE was getting off a dump truck. As they stepped back, they slipped on mud from the top step. As they landed, they rolled their left ankle. EE sustained a sprain to an ankle. EE was issued restrictions.

April 29, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

While removing the axle shaft from the right final for the final PCR, the shaft was stock. The technician started to move the shaft to release it. The shaft shot backwards, pinning the technician's right hand against the forklift and mast. The technician sustained a fracture to the hand. Employee was issued restrictions.

April 28, 2025 AZ · Metal/Non-Metal ball/rod/pebble/hand/limestone/dry mill operator, roller operator HANDTOOLS (NONPOWERED)
Freeport-McMoRan Sierrita Ops. · Struck by flying object

EE was conducting work in the mill underflow tubs by chipping away steel ball chips from the grating when a piece of metal went into their eye and began causing discomfort. EE was taken to get medical treatment and was prescribed an antibiotic.

April 25, 2025 AZ · Metal/Non-Metal water circuit operator, slurry operator, mix operator, pump operator worker EXPLODING VESSELS UNDER PRESSURE
Freeport-McMoRan Sierrita Ops. · Struck by flying object

EE was removing a valve stem cover plate. After removing the first 4 bolts, they proceeded to remove 2 more. As EE was removing the second, the knife valve split apart, causing slurry to shoot out the side. Slurry came into contact with the EE. EE sustained abrasions and multiple contusions. EE was issued restrictions.

April 25, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by falling object

while lining up the new filter to insert all thread a pebble fell off the shelf bounced past my face shield and passed through the top gap in my glasses and into the inside corner of my right eye. It instantly began burning

March 18, 2025 AZ · Metal/Non-Metal electrician, lineman SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Fall down stairs

EE was inspecting #2 drying air compressor. After they inspected the equipment, they stepped back off the concrete pad & their foot missed the lower step. Their foot caught a wood plank which gave way. They stumbled and fell to the ground. They reached back to brace their fall & injured left shoulder. They felt & heard a pop. Employee was issued restrictions.

March 17, 2025 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by falling object

EE was dumping in the drop box. As they were placing the cover back on it broke off & hit their little toe on right foot behind the steel toe cover. The contact caused a fracture to the little toe. EE was issued restrictions.

January 25, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

EE stopped for an operator break. EE went to the passenger door to get hard hat. When EE closed the door, EE's sleeve became caught on the door and EE hurt wrist. EE was taken to the emergency room and given a splint. On 1/27 EE was issued restrictions.

January 16, 2025 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in pulling or pushing objects

EE was moving skimmers onto a flatbed truck. EE was pulling/pushing the skimmer when EE heard a "crunching" noise in shoulder. EE reported the incident & was taken off site. On 1/18 EE was issued restrictions.

January 7, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Freeport-McMoRan Sierrita Ops. · Struck by... (Not Elsewhere Classified)

EE was using an impact wrench to remove bolts from the wear segments on a loader. EE placed a hand on the bottom edge to hold the carriage bolt up while using an impact gun. It spun the nut off. The bolt head spun causing a laceration to EE's left index finger and middle finger. EE was wearing protective gloves at the time. EE received stitches and restrictions.

December 23, 2024 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Freeport-McMoRan Sierrita Ops. · Struck by flying object

EE was in the process of changing a pin on the incher. When EE tried to remove it by hitting it with a hammer, a piece of the hammer metal came off of the pin and went into EE's leg. Embedded piece was not removed.

December 22, 2024 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by... (Not Elsewhere Classified)

EE was attempting to connect a hose to a vac truck when a piece of metal that was fraying from the hose penetrated the employee's right middle finger. It traveled inside & exited the finger. EE received stitches & restrictions.

November 8, 2024 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker STEPPING OR KNEELING ON OBJECT
Freeport-McMoRan Sierrita Ops. · Struck against stationary object

EE had completed a change out of an idler. EE was walking down the grated walkway when EE stepped on a rock in the grating and twisted right ankle. EE sustained a right ankle sprain. EE was issued restrictions.

November 5, 2024 AZ · Metal/Non-Metal water circuit operator, slurry operator, mix operator, pump operator worker SLIP OR FALL OF PERSON
Freeport-McMoRan Sierrita Ops. · Fall onto or against objects

While the employee was preparing emulsion in the rear of a slurry truck, a coworker called for their attention. As the employee descended the stairs and began walking towards the coworker, they did not notice a 2-inch load hose lying on the ground. This resulted in them tripping over the hose and sustaining a fracture to their right ankle.

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