Mining Incidents

THORNTON PLANT Metal/Non-Metal

Controlled by Amrize Ltd
Henderson, Adams County, CO  ·  Abandoned
MSHA Mine ID: 0503301

THORNTON PLANT has $14K in proposed MSHA penalties and $0 outstanding across 3 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
35
Years on record
1987–2013
Latest incident
Jan 2013
Compliance record
MSHA citations since 2000
107
citations
13
significant & substantial
$13,746
proposed penalties
$13,695
paid to date
100% of proposed penalties paid to date, a $51 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
30
inspections on record
555
inspection hours
n/a
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 555 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

THORNTON PLANT has $14K in proposed MSHA penalties and $0 outstanding across 3 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$14K
proposed penalties
$14K
current assessed
$14K
paid to date
$0
outstanding
107 assessments are final orders; 3 contested dockets.
As of the most recent assessment on 2014-05-13.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2016 Q2 2,385 0 0 0.0
2016 Q1 1,688 0 0 0.0
2015 Q4 3,006 0 0 0.0
2015 Q3 9,872 0 0 0.0
2015 Q2 7,596 0 0 0.0
2015 Q1 6,118 0 0 0.0
2014 Q4 6,430 0 0 0.0
2014 Q3 5,198 0 0 0.0
Show 52 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2014 Q2 5,163 1 0 193.7
2014 Q1 3,521 0 0 0.0
2013 Q4 6,101 0 0 0.0
2013 Q3 5,549 0 0 0.0
2013 Q2 5,344 0 0 0.0
2013 Q1 1,323 1 1 755.9
2012 Q4 5,666 0 0 0.0
2012 Q3 5,956 3 0 503.7
2012 Q2 6,074 0 0 0.0
2012 Q1 5,104 0 0 0.0
2011 Q4 4,359 0 0 0.0
2011 Q3 3,454 0 0 0.0
2011 Q2 2,339 3 0 1282.6
2011 Q1 572 0 0 0.0
2009 Q4 3,443 0 0 0.0
2009 Q1 1,817 0 0 0.0
2008 Q4 3,883 0 0 0.0
2008 Q3 5,822 0 0 0.0
2008 Q2 7,061 2 0 283.2
2008 Q1 9,490 4 0 421.5
2007 Q4 8,642 0 0 0.0
2007 Q3 9,243 16 2 1731.0
2007 Q2 10,350 0 0 0.0
2007 Q1 9,761 0 0 0.0
2006 Q4 8,578 0 0 0.0
2006 Q3 12,521 0 0 0.0
2006 Q2 13,647 8 1 586.2
2006 Q1 14,058 0 0 0.0
2005 Q4 15,905 0 0 0.0
2005 Q3 16,119 0 0 0.0
2005 Q2 12,920 0 0 0.0
2005 Q1 11,013 0 0 0.0
2004 Q4 14,210 17 1 1196.3
2004 Q3 16,518 0 0 0.0
2004 Q2 15,771 0 0 0.0
2004 Q1 14,123 3 0 212.4
2003 Q4 13,469 0 0 0.0
2003 Q3 14,349 0 0 0.0
2003 Q2 16,037 11 0 685.9
2003 Q1 13,303 0 0 0.0
2002 Q4 15,219 0 0 0.0
2002 Q3 16,475 2 1 121.4
2002 Q2 18,126 0 0 0.0
2002 Q1 16,636 0 0 0.0
2001 Q4 18,261 11 4 602.4
2001 Q3 18,780 0 0 0.0
2001 Q2 18,240 0 0 0.0
2001 Q1 14,980 14 1 934.6
2000 Q4 16,797 6 2 357.2
2000 Q3 17,750 0 0 0.0
2000 Q2 15,972 0 0 0.0
2000 Q1 18,837 5 0 265.4
No fatalities recorded at this mine.

Reportable incidents

35 on file

2013 · 1 incident

January 10, 2013 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Aggregate Industries WCR Inc · Struck by... (Not Elsewhere Classified)

Employee was using a grinder to buff a shaft. While he was running the grinder one of the strings from his hooded sweatshirt fell out of his coat and got wound up in the shaft of the grinder behind buffing wheel. This caused the grinder to get sucked up to his face striking him in the mouth. When it hit him it chipped a corner off of his front tooth

2005 · 1 incident

August 26, 2005 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Aggregate Industries WCR Inc · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS GETTING OUT OF THE WATER TRUCK WHEN THE DOOR STOP STRAP BROKE CAUSING HIM TO STEP DOWN BEFORE HE WAS READY. HE TWISTED HIS LEFT ANKLE AS A RESULT

2004 · 2 incidents

July 12, 2004 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Aggregate Industries WCR Inc · Caught in, under or between a moving and a stationary object

Ee was cleaning between impact rollers on feeder with a bar when his bar get caught between the roller and hopper above. his hand got caught between the bar and the roller cutting his hand betwen his thumb and forefinger.

February 18, 2004 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Aggregate Industries WCR Inc · Absorption of radiations, caustics, toxic and noxious substances

EE WAS DRIVING A COMPANY PICK UP WHEN IT OVERHEATED. THE EE STOPPED THE VECHICLE AND STARTED TO REMOVE THE RADIATOR CAP. THE EE THEN CLOSED THE CAP AND THEN REOPENED IT AND RECIEVED 2ND DEGREE BURNS ON HIS ARM BETWEEN HIS WRIST AND ELBOW ON HIS RIGHT ARM.

2003 · 6 incidents

October 27, 2003 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Aggregate Industries WCR Inc · Caught in, under or between (Not Elsewhere Classified)

EE WAS ASSISTING CONTRACT MECHANIC REMOVE CLUTCH HOUSING FROM EL-JAY VSI CRUSHER. MECHANIC WAS HOISTING HOUSING WITH LIFTING STRAP USING TRUCK CRANE. AS HOUSING CAME OUT EE HAD HAND ON LIFTING STRAP & THE HOUSING SHIFTED PINCHING EE'S LEFT HAND BETWEEN STRAP & SHEAVES ON CLUTCH HOUSING. INJURY WAS CONTUSION TO LEFT HAND REQUIRING MODIFIED WORK RESTRICTIONS. NO LOST TIME.

October 14, 2003 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Aggregate Industries WCR Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS TIGHTENING BOLTS ON SCREEN BEARING HOUSING HOLDING A WRENCH WHILE ANOTHER EMPLOYEE WAS HITTING WRENCH WITH HAMMER. EMPLOYEE WITH HAMMER MISSED, HIT COUNTERWEIGHT & HAMMER BOUNCED ONTO INJURED EMPLOYEE'S RIGHT LITTLE FINGER, BRUISING IT. NO FRACTURE BUT REQUIRED SPLINT & RESTRICTED DUTY.

August 22, 2003 CO · Metal/Non-Metal mine manager, mine foreman, mine owner HANDTOOLS (NONPOWERED)
Aggregate Industries WCR Inc · Struck by... (Not Elsewhere Classified)

EE WAS DIRECTING WORK ON A CONVEYER BELT AND TOLD ANOTHER EE TO STRIKE THE TOP OF THE ARM OF A "SIDE KICK" WITH A HAMMER TO FREE IT UP. THE OTHER EE IMMEDIATELY STRUCK WITH THE HAMMER BUT HIT THE OTHER EE'S RIGHT RING FINGER, CAUSING A FRACTURE AT THE END OF THE FINGER.

August 21, 2003 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Aggregate Industries WCR Inc · Over-exertion (Not Elsewhere Classified)

NO DIRECT CAUSE OR INJURY. NECK STARTED GETTING STIFF AND AT SHIFTENED TIME HAD PAINS, IN LEFT SIDE OF HEAD, NEAR EAR. WAS TAKEN TO CLINIC AND DIAGNOSED WITH BRACHIAL NURITIS OR RADICULITS NOS PULLED MUSCLE OR PINCHED NERVE.

May 8, 2003 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Aggregate Industries WCR Inc · Over-exertion (Not Elsewhere Classified)

EE WAS PICKING MUD OFF CONVEYOR BELT AND HIS RIGHT HAND BEGAN BOTHERING HIM FROM PICKING MUD. EE WAS DIAGNOSED WITH A SPRAINED RIGHT WRIST AND SLIGHT CONTUSION.

January 22, 2003 CO · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler SLIP OR FALL OF PERSON
Aggregate Industries WCR Inc · Over-exertion (Not Elsewhere Classified)

EE WAS STEPPING DOWN OFF OF A CONVEYOR FRAME. HE PUT HIS FOOT DOWN WRONG & TWISTED HIS RIGHT ANKLE.

2000 · 1 incident

August 11, 2000 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Aggregate Industries WCR Inc · Struck by... (Not Elsewhere Classified)

PULLING BELT WITH 1 1/2 TON COMEALONG WHEN D-RING COMEALONG WAS ATTACHED TO TO BROKE FROM STEEL WALL STRIKING HIM ON HIS RIGHT FOREARM.

1999 · 3 incidents

December 10, 1999 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Aggregate Industries WCR Inc · Struck by... (Not Elsewhere Classified)

CUTTING PIECE OF RUBBER, SLIPPED CUT RIGHT HAND.

September 2, 1999 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Aggregate Industries WCR Inc · Struck by... (Not Elsewhere Classified)

EE WAS CLEANING OUT BUTLER FEEDER ROCK WAS CAUGHT UNDER FEED CONTROL GATE EE FREED ROCK WITH SLEDGE HAMMER WHEN ROCK CLEARED THE GATE THE WEIGHTOF THE MATERIAL ON GATE CAUSED GATE TO SPRING BACK HITTING EE IN FINGER

August 11, 1999 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (REPEATED TRAUMA)
Aggregate Industries WCR Inc · Over-exertion (Not Elsewhere Classified)

STRAIN TO RIGHT WRIST. PHYSICIAN STATED THAT INJURY WAS CUMULATIVE OVER A LONG PERIOD OF TIME.

1998 · 1 incident

November 4, 1998 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Aggregate Industries WCR Inc · Struck against stationary object

EPLOYEE WAS ADJUSTING MAINLIEN CONVEYOR-HE WAS CROSSING OVER A DEADMAN CABLE HOLDING F-1 CONV. FEEDING MAINLINE CONV. TURNED HIS HEAD INTO A HANGING HEAD SECTION GUARD MOUNTED ON F-1 CONV.

1997 · 1 incident

October 21, 1997 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Aggregate Industries WCR Inc · Struck against stationary object

EE WAS SHOVELING AROUND A CONVEYOR THAT WAS GUARDED. GUARD HAD BEEN BENT BY ROCK HITTING IT WHICH WAS NOT NOTICED BY EE. EE'S THUMB WAS CUT BY GUARD WHILE SHOVELING.

1996 · 1 incident

February 2, 1996 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (PHYSICAL AGENTS)
Cooley Gravel Company · Contact with cold

EMPLOYEE WAS WORKING ON WINTER PLANT REPAIRS. TEMP WAS IN SINGLE DIGITS. EMPLOYEE WAS DIAGNOSED WITH EXPOSURE TO LEFT AND RIGHT HAND. ALL EMPLOYEES WERE GIVEN OPTION OF GOING HOME RATHER THAN WORKING IN COLD. EMPLOYEE NOTIFIED EMPLOYERS OF PROBLEM ON 2-5-96 AND EMPLOYEE WAS SENT TO CLINIC AND TREATED FOR COLD EXPOSURE.

1995 · 7 incidents

December 5, 1995 CO · Metal/Non-Metal mine manager, mine foreman, mine owner MACHINERY
Cooley Gravel Company · Caught in, under or between a moving and a stationary object

EE WAS OPERATING BACKHOE ON STEEP GRADE. DOOR ON BACKHOE WAS HELD OPEN WITH WIRE. DOOR CAME LOOSE FROM WIRE AND SLAMMED ON EE'S LEFT HAND THAT HE WAS BRACING HIMSELF WITH ON DOOR JAM. DOOR BRO KE A SMALL BONE IN EE'S LEFT HAND. DOOR LATCH WAS FIXED IMMEDIATELY THE SAME DAY. THIS WAS A BORROWED BACKHOE WHICH HAD JUST ARRIVED ON SITE.

October 30, 1995 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Cooley Gravel Company · Over-exertion in lifting objects

EMPLOYEE WAS REPLACING ROLLER ON CONVEYOR. HE TURNED AND BENT DOWN, PICKED UP NEW ROLLER AND PULLED MUSCLE. HE HAS A LOWER RIGHT BACK SPRAIN.

September 1, 1995 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Cooley Gravel Company · Struck by falling object

EMLOYEE WAS REPAIRING BEARING ON DRIVE LIEN OF LAODER. EMPLOYEE HAD DRIVE LINE IN HAND AND LET IT SLIP DROPPING ON DIFFERNTIAL WITH HIS MIDDLE RIGHT FINGE RIN BETWEEN. EMPLOYEE CUT MIDDLE RI GHT FINGER, REQUIRING SIX STITHCES. EMPLOYEE HAD GREASE AND OILED ON HIS HANDS WHICH CONTRIBUTED TO SLIPPING AND THE ACCIDENT.

July 3, 1995 CO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Cooley Gravel Company · Struck against stationary object

EMPLOYEE WAS WALKING INTO SCALEHOUSE AND TRIPPE DUP A STEP, STRIKING UNDER SIDEOF TOE ON METAL STEP. EMPLOYEE WAS WEARING SANDALS. UNDERSIDE OF LEFT BIG TOE REQUIRED 6 STITCHES.

May 20, 1995 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Cooley Gravel Company · Struck against stationary object

EMPLOYEE WAS LOOSENING ADJ ON TAIL PULLY TO REPAIR A SPLICE HE WAS PUSHING DOWN ON WRENCH WHENSOCKET SLIPPED OFF NUT & HE STRUCK HIS LEFT SMALL FINGER ON TAIL PULLY GUARD EMPLOYEE HAD LACERATI ON ON LEFT SMALL FINGER REQUIRING 6 STITCHES

January 13, 1995 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Cooley Gravel Company · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS WORKING ON BELT SPLICE ON CONVEYOR EMPLOYEE WAS TRIMMING EDGE OF BELTING WITH BELT KNIFE IN RT HAND & CUT LEFT WRIST WITH KNIFE IN PROCESS CUT REQUIRED 4 STITCHES ON LEFT WRIST

1994 · 1 incident

July 5, 1994 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Cooley Gravel Company · Fall onto or against objects

EKMPLOYEE WAS WALKING DOWN CATWALK OF SURGE STACKER WITH HIS HANDS FULL OF TOOLS. EMPLOYEE STUMBLED AND FELLA GAINST HANDRAIL PINCHING HIS LEFT RING FINGER BETWEEN HANDRAILA ND TOOLS HE WAS C ARRYING. EMPLOYEE SLIGHTLY FRACTURED (2 CHIPS) THE END OF HIS LEFT RING FINGER.

1993 · 2 incidents

August 16, 1993 CO · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDTOOLS (NONPOWERED)
Cooley Gravel Company · Struck by... (Not Elsewhere Classified)

TWO EMPLOYEES WERE ADJUSTING CRUSHER A INJURED EMPLOYEE WAS STRUCK ON LEFT SMALL FINGER BY WEDGE AFTER OTHER EMPLOYEE STRUCK WEDGE WITH SLEDGE HAMMER. THE LEFT SMALL FINGER WAS FRACTURED.

February 19, 1993 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Cooley Gravel Company · Caught in, under or between a moving and a stationary object

EE & EE WERE OPERATING LOADERS IN THE PIT FEEDING MATERIAL INTO THE ALLIS CHALMERS FEEDER SAVERAL LARGE CHUNKS OF FROZEN MATERIAL PLUGGED THE FEEDER & EE GOT OFF HIS LOADER TO DISLODGE THE MAT ERIAL EE WITH THE FEEDER STILL RUNNING PROCEEDEDTO UNPLUG THE MATERIAL NORMALY A SLEDGE HAMMER IS USED IN THE PROCESS BUT THE HANDLE WAS BROKEN SO EE GRABBED A ROCK & BEGAN TO HAMMER WEDGE PL

1992 · 5 incidents

September 16, 1992 CO · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
Cooley Gravel Company · Over-exertion (Not Elsewhere Classified)

INJURED WAS UNHOOKING A FLAT BED TRAILER FROM A PIECKUP TRUCK. WHEN HE STEPPED OFF FROM THE TRAILER HE SPRAINED HIS LEFT ANKLE.

August 31, 1992 CO · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor HANDTOOLS (NONPOWERED)
Cooley Gravel Company · Over-exertion in pulling or pushing objects

STRAINED RT SHOULDER WHILE PULLING ON TORQUE WRENCH

June 14, 1992 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Cooley Gravel Company · Over-exertion (Not Elsewhere Classified)

OPER NEW CAT FRONT END LOADER WITH SEAT BACK

June 14, 1992 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Cooley Gravel Company · Struck against a moving object

EE WAS RUNNING NEW 980 F CAT LOADER WITH A SEAT BACK THAT WOULD NOT STAY IN POSITION IT MOVED BETWEEN THE 3 ADJUSTMENTS PARTS WERE ORDEREA EE RAN THE LOADER 6 HRS AND CALLED THE NEXT AM WITH A SORE STIFF NECK. HE ALLEDGES THIS WAS CAUSED BYTHE TILTINY SEAT BACK.

May 6, 1992 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Cooley Gravel Company · Fall to the walkway or working surface

55061S HELPING MOVE A CONVEYOR DRIVE SECTION HE TRIPPED OVER A SAFETY CORD ON A 3INCH HIGH BELT HE FELL ON HIS RIGHT SIDE HITTING HIS RIGHT SHOULDER.

1991 · 2 incidents

July 15, 1991 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Cooley Gravel Company · Struck by... (Not Elsewhere Classified)

EE WAS REPLACING A GUARD AFTER DOING CLEAN UP. THE BOARD SLIPPED AND HIT HIM IN CHIN.

January 15, 1991 CO · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Cooley Gravel Company · Struck against stationary object

HE WAS PRYING ON ABAR WHEN IT SLIPPED AND HIS ELBOW HIT A STEEL PIPE. HE TOLD ME AT 3:30 (END OF SHIFT) THAT HE HIT HIS ELBOW BUT DID NOT NEED ANY MEDICAL ATTETNION. HE HAS CONTINUED TO WORK WITH NO TORUBLE BUT ON 2-25-91. HE SAIDE HIS ELBOW WAS SORE AND HE WENT TO THE DOCTOR.

1987 · 1 incident

July 7, 1987 CO · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Cooley Gravel Company · Struck by... (Not Elsewhere Classified)

I NAME WAS CARR2ING WATER BOTTLE FOR COOLER ON SHOULDER AND HIT STEEL BEAM. BREAKING BOTTLE AND CUTTING RIGHT SHOULDER. I NAME SRIGHT SHOULDER NEEDED STITCHES.

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The full compliance file on THORNTON PLANT

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.