Email me when a new MSHA incident is filed at any mine Martin Marietta Materials Inc controls.
MARTIN MARIETTA MATERIALS INC (MLM) discloses mines under this controller in its SEC Dodd-Frank Section 1503 (EX-95) mine-safety filings.
| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2026 | 0.82 | 0.30 | 0.000 |
| 2025 | 0.86 | 0.28 | 0.020 |
| 2024 | 0.86 | 0.24 | 0.052 |
| 2023 | 0.83 | 0.20 | 0.017 |
| 2022 | 0.77 | 0.20 | 0.000 |
| 2021 | 0.91 | 0.22 | 0.041 |
| 2020 | 1.06 | 0.19 | 0.021 |
| 2019 | 1.30 | 0.34 | 0.000 |
| Docket | Decision | Judge | Year | Proposed / upheld |
|---|---|---|---|---|
| CENT 2013-598M | Settlement | Moran | 2015 | $210K → $138K |
| WEST 2025-0117 | Settlement | Simonton | 2025 | $199K → $146K |
| CENT 2017-0098 | Settlement | Paez | 2017 | $140K → $70K |
| WEST 2012-550M | Settlement | Manning | 2012 | $99K → $51K |
| WEVA 2010-35M | Settlement | Bulluck | 2014 | $88K → $57K |
| LAKE 2025-0116 | Settlement | Young | 2026 | $84K → $17K |
Employee was found entangled in conveyor 12 tail pulley. Responding authorities pronounced the employee deceased. Incident is still under investigation.
Employee found face down on ground next to loader EE was operating. Responding authorities pronounced employee deceased. Incident is still under investigation.
Employee was fatally injured while working on a conveyor system.
Based on investigation to date, employee suffered a personal medical event (cardiac arrest). "Per Prelim: After washing a concrete pad, a miner drowned in a two-foot-deep pool of water."
An employee was fatally injured when they fell from an opening in an elevated catwalk.
Customer truck driver pulled into tarping area behind another truck and failed to set parking brake before exiting the truck. The driver did not use wheel chocks as required. The customer truck driver was fatally injured when customer's truck moved forward and pinned customer truck driver against the other drivers truck.
An employee was fatally injured when EE was struck by a third-party truck driver who failed to stop at a posted, lighted, STOP sign and made a sudden turn off the primary travel way. Local law enforcement arrested the third-party truck driver and charged the driver in connection with the accident.
Customer driver was found unresponsive outside the customer's truck. Cause of death is unknown.
On March 22, 2016 at approximately 6:35pm an employee was struck by flyrock after a shot was detonated. The employee was sitting inside of a pickup approximately 1,200 feet away from the shot when detonated. This incident resulted in a fatality.
Emp a contract worker repairing a Scaler in Mod 12. The emp had fallen to the ground in fetal position, locked arms, clenched fist and bleeding from the ears. The witness did not know if the emp fell from a height or ground level. The injured emp was airlifted. He was lacking oxygen to brain for 10 minutes. He was pronounced dead at 9:45AM on Feb 28.
Forklift turned over - The miner was operating a forklift, traveling on a decline toward the mine entrance, when the forklift went out of control. The forklift struck a concrete support for the belt conveyor and overturned, killing him.
Employee was operating an excavator between two small ponds when the ground beneath the excavator tracks failed and the excavator toppled into one of the ponds.
The investigation into the accident is on-going, but as of now, it appears as the three employees were installing ground vault indicator lights when an ach flash occurred, injuring them. The employees were transported to the hospital.
Cause of accident is unknown at this time. Employee was working on a winch on a dredge boat and was found drowned behind the boat some time afterwards.
An R-35 Euclid Haul truck and a rail car collided.
EMPLOYEE WAS WORKING ON THE 4TH FLOOR OF SCREEN TOWER. A GUARD RAIL WAS REMOVED TO LOWER A PIECEOF SCRAP TO THE GROUND. AFTER SCRAP WAS LOWERED,EMPLOYEE WAS BELIEVED TO BE THROWING ANOTHER PIE CE TO THE GROUND WHEN HE FELL FROM THE OPENING TO THE GROUND 56 FEET BELOW. FALL PROTECTION WAS PROVIDED BUT NOT USED.
TWO EMPLOYEES WERE IN THE PROCESS OF ASSEMBLING THE FRAMEWORK OF A SCREEN TOWER. WHEN ONE SIDE FRAME WAS SET WITH A 15 TON BRIDGE CRANE IT WAS DETERMINED THAT SOME ALIGNMENT WAS NEEDED BEFORE THE SIDE FRAME COULD BE BOLTED INTO PLACE. HE ATTEMPTED TO RECONNECT THE SPREADER CHAINS TO ENBLE THE SIDE FRAME TO BE LIFTED. WHILE RAISING CRANE IT FELL ON THE INJURED IN THE BACK.
THE EMPLOYEE WAS PINNNED BETWEEN THE FRONT BUMPER OF A PICKUP AND A FILING CABINET. THE PICKUP WAS DRIVEN BY THE PLANT MANAGER WHILE HAVING A SEIZURE. THE EE DIED AS A RESULT OF HER INJURI ES.
DRIVER HAD JUST SCALED OUT HIS LOAD & PULLED AHEAD OF THE SCALE APPROX 117' ALONG THE ROADWAY EAST OF THE PACKHOUSE BLDG. ANOTHER TRUCK FOLLOWED BEHIND HIM ONTO THE SCALE. HE STATED HE SAW DEC EASED PULL HIS RIG OFF TO THE RIGHT SIDE OF THE ROADWAY ON A SLIGHT INCLINE. DECEASED WAS OUT OF HIS TRUCK AT THE REAR LOOKING INTO THE RAISED BED OF UNTARPED MATERIAL. TRAILER WENT OVER.
HE WAS MAKING SURE THE WIRE WAS NOT CROSSED IN PREPARATION TO CONNECTING CONDUCTOR TO HANDLINE BEFORE PULLING TO POLE PLACEMENT.
STRUCK ON LEFT SIDE OF CHEST BY LEFT FRONT TIRE OF CHEVROLET WHTE 1500 TRUCK, CAUSING BROKEN RIBS.
THE EE WAS USING COMPRESSED AIR SUPPLIED BY THE LOCOMOTIVE TO CLEAN MUD FROM THE RAIL SCALE. TEN LOADED CARS WERE COUPLED TO THE LOCOMTIVE. FOUR ADDITIONAL LOADED CARS WERE PUSHED FROM THE LOA DOUT AND UNEXPECTEDLY STRUCK THE FIRST TEN. THISCAUSED THE LOCOMOTIVE TO MOVE FORWARD, STRIKING THE EE.
FOURTY FOUR YEAR OLD MALE MAINTENANCE SPECIALISTSUSTAINED FATAL INJURIES FROM AN APPARENT FALL IN AN ELEVATOR SHAFT TO THE TOP OF THE ELEVATOR. AN INVESTIGATION IS ONGOING.
SHIFT IN LOAD CAUSED TORQUE WHICH OVERSTRESSED AND CAUSED TOWER CONNECTIONS TO SHEER. THE CONVEYOR BRIDGE DROPPED APPROX. 20', CAUSING HIM TO FALL FROM THE END THAT DROPPED.
AT APPROX 10:30PM A SECTION OF ROOF FELL STRIKING THE VICTIM THE PIECE WAS APPROX 8FT LONG BY 5FT WIDE BY 2IN-12IN THICK PIECE FELL OUT BETWEEN THE BOLTS
EMPLOYEE WAS SHOVELING SPOIL FROM AROUND THE AUGER.ANOTHER EMPLOYEE WAS OPERATING THE AUGER AND HE WENT TO PULL THE AUGER OUT OF THE HOLE,THE WHIPLINE CABLE BROKE ABOVE THE HEADACHE BALL AND F ELL KNOCKING OFF EMPLOYEE'S HARDHAT STRIKING HIM IN THE HEAD.
CRUSHER WAS ROTATED WHILE EMPLOYEE WAS STILL IN CHAMBER. INJURIES TO EMPLOYEE WERE FATAL. EMPLOYEE WAS ASSISTING IN FREEING A LARGE BOULDER FROM THE CRUSHER.
EMPLOYEE WAS FATALLY INJURED WHEN PULLED INTO PINCH POINT OF HEAD SECTION OF CONVEYOR BELT.
EMPLOYEE FELL APPROX. 10' FROM REAR OF 50 TON HAUL TRUCK WHILE ATTEMPTING TO PUMP WATER FROM BED. LOST HIS FOOTING AT REAR NEAR LADDER. HE DIED OF HIS INJURIES ON JULY 6.
EMPLOYEE WAS CL9ANING DUST OFF OF A BEND PULLEY WITH A METAL SCRAPER. THE SCRAPER WAS CAUGHT BY THE PULLEY AND THE EMPLOYEE WAS PULLED INTO THE CONVEYOR BETWEEN THE BELT AND THE PULLEY
DRIVER OUT OF CAB DURING LOADING OPERATIONS. FATTALY INJURED.
TRUCK AND INJURED MOVING ON CONVERGING PATHS, INJURED WALKED INTO AND FELL BENEATH TRUCK - EMPLOYEE DECEASED.
VICTIM & ANOTHER EE WERE LOADING A PIECE OF METAL TUBING 8\ LONG 4\ IN DIAMETER FROM A WORK PLATFORM TO A FLOOR BELOW. THE VICTIM SLIPPED THRU AN OPENING IN THE OWRK PLATFORM & FELL 30\.
EMPLOYEE WAS HELPING TO REPLACE A BEARING ON THE TAKE-UP PULLEY ON CONVEYOR ELEVEN. HE FELL APPROX 45\ TO THE GROUND FROM THE CATWALK SIDE OF THE CONVEYOR. NO ONE ACTUALLY SAW HIM FALL UNTIL T HEY HEARD HIM YELL ON THE WAY DOWN. THE MIDDLE HANDRAIL WELD WAS BROKEN
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
The federal record itself stays free on this site. What costs money, and why.