Mining Incidents

Heidelberg Materials High Rock QuarryMetal/Nonmetal

Monroe, Snohomish County, WA · Active
MSHA Mine ID: 4501999
Fatalities
0
Total incidents
38
Years on record
2000–2025
Latest incident
Nov 2025
No fatalities recorded at this mine.

Reportable incidents

38 on file

2025 · 1 incident

Caught in, under or between running or meshing objects

Employee was using an angle grinder kneeling on the ground grinding a piece of steel. the grinder had guard in place and a handle. when finished they went to get up with the grinder in right hand the grinder still had some momentum and struck left hand index finger. They called the supervisor and went to urgent care and received 8 stiches. Employee was wearing C.R. gloves

2021 · 2 incidents

Struck by... (Not Elsewhere Classified)

Employee was using an angle grinder to cut a loose bolt on a board. The board was positioned on the back of a flatbed truck. Due to the bolt being loose, when the disc made contact it caused the grinder to kick into employee's hand. This resulted in a laceration requiring 3 stitches. Employee was wearing gloves.

Struck by... (Not Elsewhere Classified)

Shop mechanic was removing a u-joint from a 980 loader when the wrench slipped and hit EE in the mouth. The bottom half of EE's front tooth was broken off. EE received orthodontia work recently making it a reportable incident.

2019 · 2 incidents

Caught in, under or between a moving and a stationary object

Electrician tried to manually manipulate a locked out electrical motor via the ""V"" belts and got fingers pinched in the flywheel.

Over-exertion in lifting objects

EE was hosing down the wash plant pad when EE felt a pop in shoulder.

2018 · 1 incident

Over-exertion (Not Elsewhere Classified)

Material slough, partial engulfment, follow up appointment revealed hernia.

2017 · 1 incident

Struck by... (Not Elsewhere Classified)

A ROOFING CONTRACTOR was trimming some material with a razor knife and the knife slipped, cutting the CONTRACTOR on hand.

2016 · 1 incident

Over-exertion (Not Elsewhere Classified)

Accident was reported on the above date, we were not aware of it becoming reportable until 9/6/16. Doctors notes were not provided until 9/6/16, as employee was on a pre-scheduled vacation the week prior.

2015 · 3 incidents

Fall from ladders

Miner finished adjusting the tension on the feeder belts from a ladder. He was descending the ladder with his back to the ladder when a button on his coveralls hung up on the motor mount. He stepped up a rung to free the button and his foot slipped and he fell approximately 3 ft. to the ground below.

Struck against a moving object

Haul truck driver suffered a back and neck strain during operation of a haul truck and at the time of being loaded with rockery rock from a front shovel. After loading the truck with 2 large rocks, the shovel operator started to swing and a 3rd unexpected rock rolled out of the bucket and struck the bed of the haul truck jolting the driver.

Fall to the walkway or working surface

While walking to the shop to attend the morning tool box talk a miner suddenly collapsed due to an unknown personal medical condition and hit his head on the concrete floor. The miner sustained a laceration which required 6 stitches to close.

2014 · 1 incident

Over-exertion in lifting objects

Worker strained back while pulling a 5 gallon bucket of water up onto an elevated walkway to prime a pump on April 17. He continued to work his normal schedule until May 2nd. On May 3, he went into the doctor due to ongoing back pain and was prescribed a prescription muscle relaxer, physical therapy and released to full duty. He returned to work on his next scheduled shift.

2013 · 3 incidents

Caught in, under or between a moving and a stationary object

Employee was turning the cone bowl on and caught his right knee between the bowl and the adjustment arm.

Over-exertion in wielding or throwing objects

Employee had been swinging a 10 lb hammer on and off for a few hours when he experience a burning sensation in his right elbow. The pain went away after his shift but when he started his next shift the pain came back.

Over-exertion (Not Elsewhere Classified)

Employee was working in a feeder tunnel trying to straighten a plastic tube. He didn't feel any pain initially but started to hurt a few hours later.

2012 · 2 incidents

Over-exertion (Not Elsewhere Classified)

Employee's right elbow is starting to bother him after years of repetitive motion of operating a drill.

Struck by... (Not Elsewhere Classified)

Employee was operating a disc grinder under a cone belt. The grinder became jammed and kicked back, striking the employee's left wrist creating a laceration.

2010 · 1 incident

Over-exertion in lifting objects

Employee was loading and off-loading blasting supplies (approx 50 lb bags) from storage machine to a pick up truck and from the truck to drill holes at the quarry bench. Employee could not identify a particular incident or event of injury but started to feel pain in his hip that continuously got worse during the day.

2009 · 3 incidents

(Not Elsewhere Classified)

Hearing impairment from normal job related activities.

Fall from ladders

Employee was climbing up on a ladder when he lost balance and fell backwards 3 to 4 feet and landed on wrist and hit head on truck.

Over-exertion (Not Elsewhere Classified)

Employee was carrying a 20 ft extension ladder when a wind gust caught ladder causing employee's back to twist.

2008 · 1 incident

Fall to the walkway or working surface

Employee was getting ready to dismount truck and slipped on the catwalk and cut his leg requiring stitches.

2006 · 2 incidents

Struck by... (Not Elsewhere Classified)

Employee was welding on the jaw crusher when a piece of metal got into his left eye. Employee was wearing safety glasses and face shield. Continuing irritation required doctors visit to remove object and treatment with an antibiotic prescription.

Contact with hot objects or substances

Employee was cutting a 1/4"" plate with a torch when a piece of slag entered his right nostril. Employee notified supervisor 9 days after the incident as his nostril remained swollen. Medical treatment was sought and an anitibiotic prescription was given.

2005 · 2 incidents

Fall onto or against objects

Employee was attempting to loosen a drain plug underneath a front end loader. As he was pulling on the wrench, it suddenly loosened, and his momentum caused him to hit the back of his head on a tire rim. Employee was knocked unconscious and taken to the hospital for observation. Tests were negative for any head injury.

Over-exertion (Not Elsewhere Classified)

During a trip to Oregon for work-related training, worker stepped awkwardly on the side of a curb. Doctor diagnosed it as a foot sprain and prescribed pain medication.

2004 · 1 incident

Fall to the walkway or working surface

Tripped over metal rails that are inbedded in shop floor. Fell to ground, bruising hands.

2003 · 1 incident

Over-exertion in pulling or pushing objects

EMPLOYEE WAS MOUNTING A TOOLBOX ONTO A SERVICE TRUCK. WHEN HE PUSHED THE TOOLBOX, THE LID CAME DOWN ONTO HIS LEFT INDEX FINGER, LACERATING AND BREAKING IT.

2002 · 2 incidents

Caught in, under or between two or more moving objects

WHILE MOVING SOME PIPE HE SMASHED HIS SMALL FINGER.

(Not Elsewhere Classified)

HEARING LOSS IN BOTH EARS.

2001 · 6 incidents

Over-exertion in lifting objects

WHILE REPLACING A TROUGHING ROLLER HE STRAINED HIS BACK

Over-exertion in lifting objects

WHILE LIFTING A PIECE OF DRILL STEEL FROM THE GROUND TO PUT RT BACK ONTO THE DRILL HE STRAINED H LOW BACK.

Over-exertion (Not Elsewhere Classified)

WHILE CHANGING OUT SCREENS EE LIFTED THE ONE END OF THE SCREEN AND THEN TURNED THE SCREEN SO HE COULD HOOK THE END OF THE SCREEN TO THE BOOM TRUCK HOOK TO RAISE IT OUT AND IN. HE TWISTED HIS R IGHT KNEE. NOTE: HE DID NOT SEE A PHYSICIAN FOR THIS UNTIL 7/26/01.

(Not Elsewhere Classified)

LOSS OF HEARING DUE TO WORKING HABITS.

Struck by... (Not Elsewhere Classified)

A PICKING EYE WAS WELDED TO MANGANESE AND THE WELD BROKE. THE BOOM TRUCK BLOCK THEN HIT EE ON THE LEFT SIDE OF HIS FACE.

Over-exertion (Not Elsewhere Classified)

OVER A PERIOD OF TIME THE EE HAS SIGNS OF DEVELOPING CARPAL TUNNEL IN HIS WRIST

2000 · 2 incidents

Struck by... (Not Elsewhere Classified)

EE HAD HIS RIGHT HAND RESTING ON A SOLID PIECE OF MACHINERY WHEN THE VBELT SWING AWAY GUARD SWUNG BACK AGAINST HIS HAND

Struck against a moving object

EE WAS OPERATING AN EXCAVATOR AND ATTEMPTING TO BREAK A HUGH BOULDER. HE HAD THE FRONT OF THE TRACKS ELEVATED OFF THE GROUND AND THEN WHEN THE BOULDER BROKE THE MACHINE CAME DOWN HARD TO THE G ROUND. THE SEAT OF.