Martin Marietta Materials,Inc.Mining Incidents in 2020

Working at the face when a small flame appeared in the muck pile.

Employee contacted a gas line while cleaning out a drainage pipe

Employee was swinging ram to strike wrench to tighten the nut on a crusher. As the employee pushed the ram forward, the right hand slipped and was between the ram and the wrench as it made contact.

Two welders working in close proximity. Resulting in minor flashburn to one welder.

EE was changing V belts on the crusher. As EE stood up EE felt a pop in EE's right knee.

Employee was on the bottom step of a four step ladder. Upon stepping down to the ground, EE lost balance and fell.

Employee failed to lock out breaker and removed gutter cover in (ER6), it is unknown if the employee inadvertently moved a bare wire into the energized tap blocks causing an arc occurrence resulting in the employee being burnt on hands. Employee was transported to hospital by company truck.

EE was transferring drill bits from the truck bed to the drill deck. EE isn't sure how it happened, but the drill bit ended up smashing EE's left thumb between the drill bit and the drill deck.

Employee was helping position rigging equipment over a screen deck. As EE was handing a tagline to another employee EE stepped into an opening.

While lifting crusher liner, the hooked chain slipped off of the fork. This caused the liner to roll, resulting in the injury (bruising) of the employee's right leg.

While lifting lunchbox up onto loader catwalk, employee felt a pop in left knee. The injury did not become reportable until 6-3-21 when the investigation and MRI showed that the injury was work related.

Employee's fingers became pinned between the bearing and tub of the log washer while doing maintenance. Weight shifted of the bearing during task and fractured the two outer fingers on the left hand.

****Reported 08/05/2020**** After loading a shot, felt pain in low back.

Employee was shoveling material from under a conveyor belt and struck a hand on the plants structure. This contact resulted in a bruised fingernail and a slight fracture of the bone on the tip of a finger.

Employee caught finger while working on a roller causing a laceration

Employee was shoveling snow off the deck of the work boat, employee slipped and fell on deck. Employee was put on restricted duty on 11/02/2020 by a physician and became reportable.

Dismounting a portable bin ladder. Twisted body when they contacted the ground. Resulted in a strained right groin. *This was reported to the mine on 9/11/2020 and became reportable on 9/18/2020.*

At 4:35 AM on 8/26/20 EE arrived on site prior to shift start to retrieve items from 769D Cat haul truck. EE was at 2nd rung from top of ladder, lost grip w/left hand on grab bar located below windshield. EE swung out towards the right & fell off of haul truck, landed on ground. Compression fracture to T12 vertebra.

Employee's finger was caught between the reaction arm of a hydraulic torque wrench and the frame of the jaw crusher causing a laceration.

Employee was operating a scaler underground. The scaler pick broke free dropping the scaler boom and jarring EE's back. Became a ""Restricted Duty"" injury 8-13-20.

Approximately at 2:00 PM an employee was changing the oil filters in the 988 loader. EE placed their leg up against the transmission, causing a burn in the right calf of EE's leg. Employee reported the injury 7-21-20. The occupational medical doctor put the employee on restricted duty 7-23-20.

The employee was stepping off of the bus underground. Employee said they stepped in a pile of 3/8 minus and rolled the right ankle. The employee did not seek medical attention or treatment until 7-7-20. The injury became reportable 7-8-20.

Haul Truck Driver was driving to and from the cut to the dump. Did not report that they had injured themselves until the next day when they said they were having back pain.

Employee contacted the tailgate of the truck while loading scrap to be disposed.

Employee was stepping down from the equipment and rolled right ankle.

Employee was operating yard loader. As EE traveled across the yard the employee hit a bump, which resulted in pain to the lower back.

EE bent down to lift up on one end of a wooden pallet to slide it under some electrical cords. Just as the EE lifted one end of the pallet off the ground, EE felt a pulling/snapping sensation in the upper left arm that caused EE severe pain. EE was forced to stop the task and ask for assistance. Conditions at the time were dry, sunny, and cool.

EE bent over to pick up a bottle of hydraulic oil and strained back.

Employee was removing an engine side panel off a D7E and felt something pull in back. Diagnosed with a pinched nerve.

Employee was training another employee to fuse a piece of poly pipe to a flange. The injured employee freed the clamps on the left. The employee in training moved the wrong lever. Instead of the pipe releasing it slid the pipe pinning the employee's fingers between the metal ring and the flange.Employee sought treatment and has returned to work with restrictions.

EE1 was working along EE2 and EE3 on re-torqueing the drive belt on the primary jaw crusher. EE3 was in control of the functions of the portable hydraulic ram. While EE1 was holding the hydraulic ram and spacer in position to tighten the drive belts, the ram and spacer slipped upward pinching EE1's right thumb between the motor and the spacer.

Employee slightly bent over to lower a trailer onto a tow hitch using the trailer jack and pulled a muscle in EE's lower back

Quality Control employees was removing two 5 gallon buckets of sample material from the back of the truck at the same time and strained EE's back. EE did not report to EE's supervisor until 5 pm on 01/28/20

During a pre-shift of the Gradall scaler, the employee was leaning against a chain handrail. The chain broke and the employee fell backwards approximately six feet to the ground.

Employee was changing a snub pulley and pinched right middle finger.

Employee was conducting overhead welding activities when a piece of metal got into EE's eye. EE did not report it right away. The metal was removed by an eye dr. on 11/20 and was given a prescription.

Employee was removing a rag that was in a hole in a chute and hit the back of hand when the rag dislodged from the hole.

Employee was walking back to personal vehicle to get a flashlight to perform pre shift inspection on mobile equipment and tripped over a rock that was submerged.

Employee was grinding on the cone liner using a 4 1/2 in. angle grinder. EE was only using one hand on the grinder as the other hand was holding the electrical cord to keep it out of the way. The grinder kicked back and the wheel make contact with the employee's left pointer finger. EE was taken to the clinic and received 5 stitches and a tetanus shot.

Employee was loading bolts onto the Fletcher bolting machine. EE was pushing a bolt carousel to move it to continue loading bolts. A bolt slipped out of the clip causing the inside employee's right forearm to contact the corner of the clip resulting in a laceration that required 4 stitches.

At 12:30 AM ee was performing work near 7-ft. crusher, cutting a piece of rubber. EE was using a utility knife to cut rubber. While performing the cut knife slipped & punctured EE above R knee. EE radioed the lead-person & first aid was performed. Foreman was called and it was determined that the employee should receive medical attention. Ee received 1 stitch at hospital/ER.

EE1 was shoveling at the primary plant. As EE1 was lifting the shovel into motion, a rock fell and struck the EE1's left 4th digit finger tip. EE was wearing impact resistant gloves at the time of the incident. EE was later seen at clinic and diagnosed with a fracture to the tip of the finger.

Employee noticed a rock up in guard of jack shaft on surge bin. Employee noticed rock was barely on the cross member inside the guard. Employee hit back of guard to knock rock out. Rock went into coupler of jack shaft & sent rock into the guard. Guard caught employees hand & expanded metal went through employees glove & cut employees right hand.

Sledgehammer striking injured miner's left index finger

On 10/21/2020 employee was found lying on the ground near the water truck. EE stated was unsure as to what happened and conveyed to EMS that EE had previously experience a TIA several years ago.

Employee passed out from a personal medical condition.

Trespasser.

Employee was getting off of the truck when EE slipped on slick material spraining the ankle. After visiting the doctor EE was given a brace to wear.