Martin Marietta Materials,Inc.Mining Incidents in 2022

Fall in the tunnel occurred 12/30/22. That same day MSHA EE, MSHA Asst DM and two others had a call. It was determined the fall didn't need to be reported since the structure was designed for such an event. On 3/21/23 MSHA inspector and Field office supervisor instructed management to submit a 7000-1 for this event.

Fall in the tunnel occurred 9/20/22. That same day two MSHA employees & two Martin Marietta employees had a call. It was determined the fall didn't need to be reported since the structure was designed for such an event. On 3/21/23 an MSHA inspector and field office supervisor instructed management to submit a 7000-1 for this event.

A mine fire on the passenger side of the Western Star explosives truck occurred. The miners operating the truck extinguished the fire and evacuated the mine.

The employee was pulling down on a belt which was connected to a motor pulley and a gear box pulley. The purpose of the task was to rotate the screw conveyor so bolts that were damaged could be replaced. After doing so, the pulley began to turn catching and injuring the employee.

A haul truck was being loaded in pit. The muck pile began to slough causing wall material behind the pile to shift. This material slid down onto and covered the rear of the truck enough that the operator was unable to drive away. EE safely dismounted the truck to meet the loader operator on the ground. Three days later reported had back pain and sought medical care.

While performing crusher maintenance, employee stood on mid-rail of handrail and fell to lower level.

Employee operating the excavator, traveled on the south side of the conveyor, parallel to the highwall. Holding 6-8' back from the highwall as they traveled, the material gave way underneath the excavator, tipping over the machine. The employee sustained a fractured rib and occipital condyle fracture. A seatbelt was worn.

Misstep over own boots causing employee to trip and fall landing on right knee. Evaluated by medical provider with ongoing treatment.

A miner reported back pain the day after was tasked with shoveling material. First aid treatment was administered on site and EE declined to see a medical professional or go to the clinic. *On 6/15/2022, the EE called off work and said was going to the ER. The employee did not return to work.

Truck Service vehicle lost brake control due to unknown circumstance. Unable to brake causing impact to a rib.

Employee used fingers to switch on electric breaker. Claimed arm pain later in shift. Employer opposed claim based on facts, investigation and absence of mechanism of injury. In June 2022 DHO ruled allowing arm strain. Employer maintains that injury is not work related and is appealing ruling.

Employee was pulling an 8"" vacuum hose, lost track of footing and stepped back onto the hose they were handling causing an ankle and fibular fracture.

The injured employee (IE) was participating in first aid/CPR/AED classroom training when IE experienced a personal medical event and subsequently fell to the concrete floor striking face requiring medical treatment beyond first aid. IE was transported to a local ER where IE was treated for a nasal fracture and sutures to the nose.

08/18/2022 employee was removing screens from a screen deck. Employee lost grip with left hand causing the screen to twist with it still in EE's right hand. General first aid measures were given and the employee returned to work. Employee was seen by an occupational clinic on 11/23/2022 for continued pain with injury. Physical therapy and restrictions were prescribed on 11/23/2022.

Improper use of hand tool. While unplugging a DTH, EE used a 48"" pipe wrench as a hammer. While striking the DTH, the crook EE's right hand was pinched between the hook and handle causing a puncture injury requiring 3 stitches.

The injured employee (IE) was removing a five gallon bucket of oil from the bed of a pick up truck with the tailgate down and strained left shoulder. The injury has resulted in light duty restrictions and further treatment.

A miner received a fracture in the left pinky finger when involved in throwing a piece of drill steel away in the metal bin.

Tightening a bolt, wrench slipped and struck employee's pinky finger.

Employee operating a boat contacted a sand bar throwing EE forward into a seat. This resulted in three fractures in EE's back.

Driller was unthreading 4.5"" bit from T-51 drill steel the steel unthreaded first falling and pinching left ring finger between bit and ground causing injury to the finger.

Employee's hand was smashed by another employee closing the door to the anfo bin, the employee was not able to get EE's hand out of the way in time.

A miner who was involved in metal plate cutting activities went to readjust the PPE welding sleeves on right arm, and accidentally contacted the arm with the cutting torch, resulting in a burn.

Employee was pushing and guiding a toggle bearing in place to be bolted and heard a pop and felt pain in their back. This became reportable when they received restrictions the following day at a doctor's appointment.

Mechanic was stepping down off of a skid steer and sprained EE's ankle.

While traveling by foot to turn off the secondary crusher, the employee struck their head against the frame of the lube tank causing a laceration.

Wind blew pickup door shut on employee's finger, requiring 5 sutures to employee's right index finger.

A miner was changing the bucket teeth on a loader. When the miner was striking the tooth for removal, a piece of metal broke off and embedded in the right leg, which required removal.

The injured employee (IE) was operating a CAT D8T dozer to push material to the loader operator. As the IE was exiting the D8T dozer, the IE's heel was caught on the track causing IE to fall to the ground level. The IE was evaluated at the local ER and determined to have a fracture to IE's L3 disc. No further treatment was necessary.

A/C vent cover fell off of the 988F wheel loader. Employee was attempting to put the A/C vent cover on. They stuck their fingers into the vent hole, the fan was still running and a finger came into contact with the steel fan blades which cut the fingers.

Employee was using a utility knife while performing patch work on a conveyor belt. While cutting, the utility knife slipped, and cut the employees left thumb just below the nail. The employee received 3 stitches.

The injured employee (IE) began feeling discomfort in the left eye several hours after the end of the shift. During IE's shift, the IE was grinding on metal plates while wearing the proper PPE. The IE was treated by a local ER clinic and eye doctor after a metal shard was found imbedded in IE's left eye. The metal shard was removed and prescription antibiotics were given.

A miner was clearing limbs out of a tree, when a limb bounced off the ground toward the miner, striking them in the face and resulting in stitches.

While changing small motor, the motor smashed the employees finger.

Cutting a tube, lost control of the box cutter, cut left hand

Wind picked up and blew dust into the employee's eye around EE's safety glasses. EE was evaluated the next day by a Dr. and found to have a minor abrasion. EE was prescribed prescription eye drops.

Employee was painting rib markings and as EE was turning around, tripped on a rock. When EE fell, the right hand and wrist landed on a sharp rock. This contact caused a laceration on EE's right hand and wrist.

Employee contacted neck with adjusting bolt on mounting plate while placing a motor on a motor mount. Employee received two stitches.

Secondary plant operator had several pieces of metal embedded into left eye during the shift. The metal most likely came from EE's gloves. Metal was removed and an antibiotic was administered making this a reportable injury.

Employee partially stepped on a stair edge and rolled EE's ankle.

Employee mashed finger while tapping a beam in place with sledgehammer, resulting in a fracture.

Miner was cleaning off a catwalk and allegedly felt discomfort in the shoulder area. After an investigation, it did not seem plausible the injury had occurred on the mine site. The miner ceased contact with the company until a State (Alabama) Panel Exam authorized the injury and the employee contacted the employer on August 25, 2022.

An operator was found unresponsive in the cab of a bulldozer. A lead person drove to the area in which they were operating to pick up for shift change. Upon arrival the area the lead person found the bulldozer parked but wasn't able to get a radio response from the operator. Lead person ascended the bulldozer and found the operator seated in the cab unresponsive.

An over-the-road truck driver (non-miner) with CKJ Transport LLC. of North Texas was on site at the North Bridgeport Quarry when they fell while mounting truck cab. Driver injured left foot and suffered abrasion on the back of their head.

Injured employee was lifting five gallon buckets of material from a pump area on the plant. EE felt abdominal pain. EE reported to supervisor that EE had a pre-existing hernia. EE was transported to an ER where EE was treated for the pre-existing Umbilical Hernia. The physician placed EE on lifting restrictions and has recommended surgery to be scheduled in the next few weeks.