Mining Incidents

Spec Agg Quarry Metal/Non-Metal

Golden, Jefferson County, CO  ·  Active
MSHA Mine ID: 0500860

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Fatalities
0
Total incidents
46
Years on record
2000–2025
Latest incident
Apr 2025
Compliance record
MSHA citations since 2000
115
citations
18
significant & substantial
$19,983
proposed penalties
$19,835
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 20,853 2 0 95.9
2025 Q3 18,437 0 0 0.0
2025 Q2 27,939 1 0 35.8
2025 Q1 14,632 2 1 136.7
2024 Q4 19,110 0 0 0.0
2024 Q3 23,937 0 0 0.0
2024 Q2 20,141 0 0 0.0
2024 Q1 17,096 4 0 234.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

46 on file

2025 · 1 incident

April 8, 2025 CO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Martin Marietta Materials · Struck by... (Not Elsewhere Classified)

Trying to dislodge a rock 17' down a bore hole with loading poles. The rock was dislodged and the poles rebounded and hit employee under the right eyebrow. Cutting EE with a 1' cut. EE was wearing safety glasses. EE was taken to the emergency care unit. for stitches.

2024 · 2 incidents

December 10, 2024 CO · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
Martin Marietta Materials · Fall to the walkway or working surface

12/10/24 EE slipped and fell on ice. EE continued first aid treatment until 1/27/2025 EE was prescribed psychical therapy.

August 6, 2024 CO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Martin Marietta Materials · Struck against a moving object

8/6/2024, EE experienced unspecified back pain while operating haul truck. 8/7/2024, EE was seen at clinic, first aid only. 8/22/2024, EE condition did not improve, occupational doctor prescribed physical therapy.

2023 · 3 incidents

December 2, 2023 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Materials · Struck by flying object

Employee was attempting to dislodge a rock that was caught between the frame and arm of the #1 cone crusher. Employee grabbed a chipping hammer and hit the rock, attempting to break it, as EE contacted the rock, debris went underneath EE's safety glasses and hit EE's right eye.

October 13, 2023 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Martin Marietta Materials · Struck by flying object

Employee was loading structural fill with CAT 982 loader, dust got into eye because the cab door was not completely closed. Employee was taken to the local clinic, diagnosed with infection of the left eye.

August 29, 2023 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
Martin Marietta Materials · Caught in, under or between running or meshing objects

Employee was shoveling around the locked out tail pulley. EE climbed between the trusses of the conveyor and shoveled toward the tail pulley. The belt rolled backwards and EE placed both arms toward the tail pully, placing arms between the tail pulley and belt. The belt continued to roll backwards pinning EE's arms between the tail pulley and belt.

2021 · 1 incident

January 1, 2021 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Materials · Struck by flying object

Employee was conducting maintenance work on a guard when at some point debris made contact with employee's eye. Employee was wearing all the required PPE including safety glasses. Towards the end of the shift employee attempted to flush out the eye & thought it was improved. On 01/01/21, employee reported that the eye was red & needed to be seen by a medical professional.

2019 · 3 incidents

July 31, 2019 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Martin Marietta Materials · Rubbed or abraded

EE was changing a cutting edge on a 982 loader. The bolt head was spinning while the EE attempted to remove the nut with an impact wrench. EE placed their right hand under the head of the bolt to push it up and hold it in place. As the pulled the trigger on the impact, the bolt spun causing a laceration to their right hand. The EE was wearing gloves.

June 26, 2019 CO · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Martin Marietta Materials · Over-exertion in lifting objects

EE was shoveling material into 5 gallon buckets, weighing 80 lbs, then carried one bucket in each hand 30 feet upon where the EE dumped the material on to a belt. The EE experienced a strained muscle in their back right shoulder, due to the heavy lifting and dumping of material on the belt.

2017 · 2 incidents

September 30, 2017 CO · Metal/Non-Metal washer operator, sizing operator HANDLING OF MATERIALS
Martin Marietta Materials · Struck by flying object

EE was installing a guard on a tail pulley when the guard sprung loose and struck the EE in the mouth.

July 21, 2017 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Martin Marietta Materials · Struck by flying object

A rock struck an employee in the mouth chipping/cracking their front tooth in two places.

2016 · 1 incident

August 3, 2016 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Materials · Struck by... (Not Elsewhere Classified)

Employee was prying steel when the pry bar slipped and lacerated cheek.

2015 · 2 incidents

May 27, 2015 CO · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey HANDTOOLS (NONPOWERED)
Martin Marietta Materials · Struck by... (Not Elsewhere Classified)

EE was asked to put new tape markings on the pump hose 5058. He needed to cut old tape off. In this process, he stabbed himself between the thumb and finger. We took him to the emergency room. He needed four stitches and was released.

May 18, 2015 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Martin Marietta Materials · Over-exertion in wielding or throwing objects

Employee was swinging a large sledge hammer and missed his striking point. The missed strike caused strain on his left arm and shoulder. His left arm was put in a sling and he was give soma to help with muscle spasms.

2014 · 1 incident

June 11, 2014 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Materials · Over-exertion in lifting objects

Moving pallet box to rear of service truck, strain/tear in right arm bicep.

2013 · 1 incident

October 28, 2013 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Materials · Struck by... (Not Elsewhere Classified)

Employee was replacing the plow bolts on a cutting edge of a loader bucket when his hand slipped and was cut by the edge of the plow bolt.

2012 · 1 incident

September 12, 2012 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Martin Marietta Materials · Struck by falling object

Employee was cleaning out a chute and material fell striking him in the left shoulder. Employee was diagnosed with a contusion of the left shoulder and was issued physical therapy.

2011 · 1 incident

September 20, 2011 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

While removing worn manganese liner from Crusher Bowl Frame, one employee was driving wedges under line with hammer, the liner popped from it's position, hitting the employee on the lower left rib cage and then on the right foot.

2008 · 1 incident

May 10, 2008 CO · Metal/Non-Metal ledgeman/hand, quarry man HANDLING OF MATERIALS
Lafarge West Incorporated · Over-exertion in lifting objects

Lifting buckets of crusher back and foot slipped forward and felt a pull in lower abdominal area.

2007 · 1 incident

April 9, 2007 CO · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

Employee was using a hammer to knock a bearing out of its housing when a bearing fragment struck him on the hand.

2006 · 3 incidents

September 7, 2006 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Lafarge West Incorporated · Over-exertion in lifting objects

Employee was lifting rocks and sustained a hernia.

June 14, 2006 CO · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
Lafarge West Incorporated · Caught in, under or between (Not Elsewhere Classified)

Employee was running a maching when his thumb was caught between the shiv and the belt causing a fracture.

February 18, 2006 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Lafarge West Incorporated · Fall from machine

Working on conveyor belt, slipped on ice and fell approx. 2 ft. to ground (strained back/shoulder).

2005 · 1 incident

April 1, 2005 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

Moving cone motor, motor struck his leg and twisted his knee.

2004 · 2 incidents

November 2, 2004 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

Employee tried to strike a piece of the steering arm of a haul truck in place with a hammer. Employee missed his target and hit his left middle finger. Examination by a doctor revealed a fracture in his finger.

April 14, 2004 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Lafarge West Incorporated · Struck against a moving object

Employee alleges he hit his head on the top of the loader cab on 4/14/04. The injury was not recordable at that time. Employee returned to physician on 5/13/04 claiming that injury was not healing, and was prescribed physical therapy at that time.

2003 · 5 incidents

December 9, 2003 CO · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

EE WAS SETTING UP TO FINISH CUTTING A PIECE OF CURVED METAL. PIECE ROTATED & HIT HIM IN THE NOSE.

November 4, 2003 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator DISORDERS (REPEATED TRAUMA)
Lafarge West Incorporated · Over-exertion (Not Elsewhere Classified)

Employee reported injury on 11/4/03 (sore shoulder). Recent evaluation led to surgery on 4/6/04.

October 24, 2003 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Lafarge West Incorporated · Caught in, under or between a moving and a stationary object

EE WAS INSTALLING A PART ON A SCREEN DECK EE LOST HIS GRIP CAUSING HIS THUMB TO BE PINCHED BETWEEN THE PART AND THE PART MOUNT.

June 7, 2003 CO · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDTOOLS (NONPOWERED)
Lafarge West Incorporated · Fall to the walkway or working surface

EE WAS USING A PRYBAR TO POSITION A PULLEY FOR MAINTENANCE. THE PRYBAR SLIPPED AND THE EE HURT HIS ANKLE. THE EE DID NOT SEEK MEDICAL ATTENTION UNTIL 6/9/03.

January 20, 2003 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Lafarge West Incorporated · Over-exertion (Not Elsewhere Classified)

EE COMPLAINED OF LOWER ABDOMINAL PAIN WHILE REPAIRING A HAUL TRUCK ENGINE. ALLEGED INJURY WAS ON 1-20-03. EE REPORTED ALLEGED INJURY ON 1-22-03. MEDICAL VERIFICATION OF INJURY WAS ON 2-14-03.

2002 · 4 incidents

July 22, 2002 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

EMPLOYEE FELT SOMETHING ENTER HIS EYE FROM BEHIND HIS SAFETY GLASSES. FIRST AID EYEWASH APPLIED. EYE IRRITATION/REDNESS THE FOLLOWING MORNING - SENT TO THE CLINIC FOR EVALUATION.

May 23, 2002 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Lafarge West Incorporated · Struck by... (Not Elsewhere Classified)

FOREIGN OBJECT EMBEDDED IN EYE

March 15, 2002 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Lafarge West Incorporated · Caught in, under or between a moving and a stationary object

WHILE REPAIRING CHUTE LINER HE HAD HIS HAND ON THE CORNER OF THE LINER. IT CAME & PINCHED HIS HAND ON THE DOOR BRACE.

January 7, 2002 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Western Mobile Inc · Over-exertion in lifting objects

LIFTING OVERHEAD STRAINED BACK

2001 · 2 incidents

November 5, 2001 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Western Mobile Inc · Struck against a moving object

RUNNING PIT LOADER, RAN OVER SOME ROUGH UNEVEN GROUND

March 26, 2001 CO · Metal/Non-Metal truck driver POWERED HAULAGE
Western Mobile Inc · Struck against a moving object

LARGE ROCK LOADED INTO HAUL TRUCK BY OPERATOR; ROCKED THE TRUCK. EE COMPLAINING OF BACK PAIN.

2000 · 8 incidents

December 29, 2000 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Western Mobile Inc · Struck by... (Not Elsewhere Classified)

CUTTING STEEL FROM HOPPER, MATERIAL CAME LOOSE FROM THE SIDE. EE STEPPED AWAY FROM THE FALLING MATERIAL & HIT A HANGING GATE.

December 14, 2000 CO · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDTOOLS (NONPOWERED)
Western Mobile Inc · Struck by... (Not Elsewhere Classified)

USING A HACKSAW TO CUT THE METAL ROD, BLADE SLIPPED OFF ROD CAUSING LEFT HAND TO STRIKE ROD & CUT FINGER.

November 29, 2000 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Western Mobile Inc · Caught in, under or between (Not Elsewhere Classified)

TIGHTENING A BOLT WITH A BREAKER BAR & DEEP WELL SOCKET. SOCKET SLIPPED FROM BOLT HEAD & FINGER WAS PINCHED BETWEEN TOOL & STATIONARY OBJECT

November 17, 2000 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Western Mobile Inc · Struck by... (Not Elsewhere Classified)

HE WAS CHANGING WIPER ON FEED CONVEYOR; ANOTHER EMPLOYEE WAS HELPING AND LET GO OF WIPER.

September 25, 2000 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
Western Mobile Inc · Absorption of radiations, caustics, toxic and noxious substances

STUNG BY A BEE / ALERGIC REACTION.

August 10, 2000 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Western Mobile Inc · Struck by... (Not Elsewhere Classified)

REPLACING EDGE SEGEMENTS FROM WHEEL LOADER. REMOVING BOLTS, BOLT SLIPPED AND CUT FINGER.

May 1, 2000 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Western Mobile Inc · Fall from machine

IN BED AREA OF BOOM TRUCK, AS HE WAS GETTING OUT, SLIPPED ON SOME GREASE AND FELL.

February 15, 2000 CO · Metal/Non-Metal backhoe operator, trackhoe operator, crane operator HANDLING OF MATERIALS
Western Mobile Inc · Caught in, under or between a moving and a stationary object

EE WAS HELPING REMOVE A PIECE OF SCREEN CLOTH SCREEN CLOTH MOVED UNEXPECTEDLY & SMASHED HIS FINGER