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

287 matching records

Showing 50 of 287
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 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.

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 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.

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.

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 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.

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 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 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 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.

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.

October 3, 2024 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 lifting objects

On 10/3 an EE was prepping up the bleeders on Tailings. EE lifted up the pipe and felt a pop on their left side. EE went home. On 10/8/24, EE notified the site of the pop and was seen at the clinic. EE was then issued restrictions.

September 6, 2024 AZ · Metal/Non-Metal drill operator HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

At the end of shift, an operator was getting into the man van in the passenger side when EE's knee popped. EE was taken to Room 100 then to an offsite medical facility where EE was treated for a knee sprain. Was issued a knee brace and given restrictions.

July 3, 2024 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)

EE was carrying hand tools (broom and shovel) in their hands and stepped off a small retaining wall and twisted their leg/ankle. They sustained a fracture to their leg and dislocation to their ankle. EE was issued restrictions and referred to a specialist.

June 21, 2024 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

EEs were setting a pinion into a rack with a bridal chain. The bridal chain became caught between the old pinion and rack. The chain was being moved and the pinion rolled, catching the EE's left thumb and causing a laceration to it. EE was taken to the clinic where they received stitches and restrictions.

April 23, 2024 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in lifting objects

On 4/23/24, 2 employees were loading a gasoline generator into the bed of a pick up truck. They then traveled to their jobsite. Once at the job site, an EE stated that EE thought EE pulled a muscle in EE's back while lifting the generator. EE was taken to the clinic & released. On 5/7/24 EE returned to the clinic with back pain from the generator lift. EE was issued restrictions.

April 15, 2024 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 fueling a generator in the parking lot at the Tailings shop. EE was removing a hose from the generator. The generator door swung shut and struck the EE in the left ring finger. EE sustained a fracture to the left 4th finger. Issued restrictions.

March 21, 2024 AZ · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck against stationary object

EE was walking up the ramp from the tunnels. The EE had a tool bag that kept slipping off EE's shoulder. EE went to make an adjustment to the tool bag and felt a scratch on the left palm of their hand. EE noticed was bleeding. EE was taken to the clinic and stitches applied to the laceration. EE was also given restrictions.

November 27, 2023 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in lifting objects

EE had tipped a bleeder and felt a pinch in their back. EE did not report it right away. On December 1st they informed supervision that they had gone to Urgent Care to seek medical attention. EE was seen and released. EE was sent to the clinic to be evaluated and issued restrictions. EE did not come to work on the 2nd or 3rd.

October 15, 2023 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. · Struck by flying object

EE noticed redness in their right eye. EE flushed out eye with no change, was still experiencing some discomfort. EE was seen by tele-med and was advised to go to the emergency room. Emergency room did not find any foreign object in eye, but did prescribe prescription eye drops. EE was released back to work with no restrictions.

October 7, 2023 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck against stationary object

EE had sustained a laceration to EE's finger with a piece of hanging metal. EE was seen by tele-med and it was suggested that EE received stitches. The EE was sent to an emergency room and glue was applied along with butterfly sutures to close the wound. EE was then released back to work with no restrictions.

September 17, 2023 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 had been assigned to the 59 haul truck. During the preshift inspection EE noticed they were missing a fire suppression tag and called a mechanic. While looking for a BO flag to put out in front of the truck, the EE slammed the passenger door on their hand. They sustained a laceration on their middle finger. 4 stitches were placed on the laceration. EE was returned to work.

August 31, 2023 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... (Not Elsewhere Classified)

Employees were installing an expansion boot on the bypass box. As they were lifting, the boot ripped and the rigging became loose and struck the employee in the mouth (upper lip). EE was taken to the clinic for medical treatment. EE sustained a laceration and received 5 stitches in the mouth. EE was released back to work with no restrictions.

August 16, 2023 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

The employee was repositioning themselves with the jackhammer, when they lost their balance. The air hammer tipped forward catching their left thumb between the skid and the air hammer.

August 3, 2023 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Fall to the walkway or working surface

EE was using a J hook to correct proper anode location on the cell line. The J hook slipped from the bottom of the anode and this caused the employee to lose their balance and trip and fall. They injured their face and lower leg. EE issued restrictions.

July 3, 2023 AZ · Metal/Non-Metal mechanic helper HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

EE was pulling replacement liners off in the B1 feeder belt. EE was the inside person doing this. The employee on the outside the feeder was tightening bolts and EE was holding it. The EE was not ready when the liner was sucked to the wall, causing the EE's eight fingers to become pinched. Several sustained fractures. EE was issued restrictions.

June 26, 2023 AZ · Metal/Non-Metal drill operator HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in pulling or pushing objects

EE was delivering drill bit to 90 drill. Oiler was standing next to 90 drill. EE was unloading drill bit. As they grabbed the handrail to the drill they tried to pull themselves up and felt a pop in shoulder and a snap. EE was taken to a hospital for treatment. Issued restrictions for a dislocated shoulder.

May 18, 2023 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Caught in, under or between a moving and a stationary object

An operator was inside of a drill & noticed the door's rubber seal was coming loose. Operator opened the door to adjust the seal with right hand & then closed the door with left hand. Operator's two fingers on right hand became smashed in the door frame. Operator was taken to a medical facility & sustained a fracture to a finger.

April 19, 2023 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by falling object

EE was working with a co-worker lifting a roller a couple of inches off the ground. The roller slipped out of their hand & landed on left index finger. EE sustained crushing injury to finger & lacerations. Stitches applied & restrictions issued.

April 8, 2023 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Absorption of radiations, caustics, toxic and noxious substances

EE was walking to the shop when EE could feel the acid mister liquid hitting EE on their face. Some had gotten into EE's eye. EE tried flushing it out. Later that afternoon EE reported the incident, EE was taken off site to a medical facility. EE was given multi use eye drops for the eye.

March 31, 2023 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Rubbed or abraded

EE went to the 04 warehouse to pick up some tools. When they arrived at the warehouse the attendant buzzed the door to unlock it but it didn't unlock properly. The EE went to turn the handle and pulled on the door hard. It caused the handle to break and the EE sustained a cut to the palm of their hand. EE received stitches to their hand.

February 17, 2023 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in pulling or pushing objects

IE was assisting with replacing a concave into the primary crusher. While guiding the concave the IE attempting to push the concave into place and felt a slight pinch in EE's lower back. IE diagnosed with slight lower back strain.

February 4, 2023 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in pulling or pushing objects

EE was pulling cloth on #5 filter. They bent over and with both hands began to pull cloth. They felt sharp pain in middle of lower back that radiated down to legs preventing them from walking. EE was taken to clinic on 02/05/2023 and was issued restrictions. Taken off work.

November 21, 2022 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... (Not Elsewhere Classified)

EE was going to replace the plate on the ball float of #2 column cell. The ball float shaft slipped and the ee went to catch it and EE had gotten a laceration to EE's finger. The ee received stitches to EE's finger and given restrictions.

August 8, 2022 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... (Not Elsewhere Classified)

Unsecure plate over a hole at mine site - the plate gave way - belly sliced by plate

August 3, 2022 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in pulling or pushing objects

During the task of cathode sampling, an employee felt a pop in lower back while they were pushing the cathode into the saw blade. EE notified supervision and was taken to a medical facility. Employee was diagnosed with lumbar strain. Employee was given restrictions.

May 2, 2022 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in lifting objects

EE attempted to pick up a 10hp electric motor to discard into the recycling roll off dumpster. EE noticed discomfort/tightness in lower back. EE's partner then offered assistance to offload the motor. EE was taken to clinic and restrictions were issued.

March 29, 2022 AZ · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Struck by... (Not Elsewhere Classified)

EE was opening the door to the E/I shop. The door was jammed and EE attempted to pull the door when the handle broke off and cut EE's finger. EE was taken to clinic where EE received stitches to finger. EE was released to work.

March 24, 2022 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion (Not Elsewhere Classified)

On 3/23 EE was working on 11 Mill performing normal tasks. Began feeling lower back pain. On 3/24 EE informed supervisor & was sent home. EE on STD. On 5/2 EE informed HR EE wanted to file claim. On 5/3 EE was issued restrictions from clinic.

March 12, 2022 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in pulling or pushing objects

On 3/12/2022 a EE went to open a valve at the Tailings Dam but it was stuck. EE tried to open it & felt a pop in the left side of chest. On 3/14/2022 EE was issued restrictions due to the pop on 3/12/22.

January 25, 2022 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Freeport-McMoRan Sierrita Ops. · Over-exertion in lifting objects

An employee was conducting clean up at the liners when the employee went to lift a motor. EE began to feel some pain and discomfort in EE's back later that day. EE was taken to the clinic and was issued restrictions for muscle strain.

Showing 50 of 287