Mining Incidents

West Plant Metal/Non-Metal

CalMat Co · Surface
Controlled by Vulcan Materials Company
Mesa, Maricopa County, AZ  ·  Active
MSHA Mine ID: 0202166

West Plant has $28K in proposed MSHA penalties and $0 outstanding across 6 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
44
Years on record
1984–2024
Latest incident
Aug 2024
Compliance record
MSHA citations since 2000
103
citations
18
significant & substantial
$28,090
proposed penalties
$25,899
paid to date
92% of proposed penalties paid to date, a $2,191 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
67
inspections on record
997
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: 997 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

West Plant has $28K in proposed MSHA penalties and $0 outstanding across 6 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.
$28K
proposed penalties
$26K
current assessed
$26K
paid to date
$0
outstanding
101 assessments are final orders; 6 contested dockets.
As of the most recent assessment on 2025-08-07.
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
2025 Q4 17,265 0 0 0.0
2025 Q3 18,262 3 0 164.3
2025 Q2 19,118 0 0 0.0
2025 Q1 19,023 0 0 0.0
2024 Q4 18,795 2 0 106.4
2024 Q3 17,588 0 0 0.0
2024 Q2 19,432 0 0 0.0
2024 Q1 16,591 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 15,604 0 0 0.0
2023 Q3 14,628 0 0 0.0
2023 Q2 16,279 0 0 0.0
2023 Q1 17,984 0 0 0.0
2022 Q4 17,678 0 0 0.0
2022 Q3 20,532 0 0 0.0
2022 Q2 19,263 0 0 0.0
2022 Q1 17,470 1 0 57.2
2021 Q4 13,260 0 0 0.0
2021 Q3 17,522 1 0 57.1
2021 Q2 19,183 0 0 0.0
2021 Q1 19,202 1 0 52.1
2020 Q4 19,048 0 0 0.0
2020 Q3 19,220 0 0 0.0
2020 Q2 18,296 1 0 54.7
2020 Q1 21,430 0 0 0.0
2019 Q4 20,184 0 0 0.0
2019 Q3 19,640 1 0 50.9
2019 Q2 16,203 0 0 0.0
2019 Q1 17,127 13 3 759.0
2018 Q4 15,994 0 0 0.0
2018 Q3 18,453 0 0 0.0
2018 Q2 15,666 4 1 255.3
2018 Q1 15,769 0 0 0.0
2017 Q4 16,087 0 0 0.0
2017 Q3 17,333 0 0 0.0
2017 Q2 17,554 0 0 0.0
2017 Q1 17,241 0 0 0.0
2016 Q4 16,971 0 0 0.0
2016 Q3 16,788 0 0 0.0
2016 Q2 15,185 2 0 131.7
2016 Q1 14,926 3 1 201.0
2015 Q4 12,995 0 0 0.0
2015 Q3 14,126 3 0 212.4
2015 Q2 13,900 0 0 0.0
2015 Q1 13,237 3 0 226.6
2014 Q4 11,992 0 0 0.0
2014 Q3 12,077 0 0 0.0
2014 Q2 12,191 8 2 656.2
2014 Q1 11,777 0 0 0.0
2013 Q4 11,088 1 0 90.2
2013 Q3 12,100 0 0 0.0
2013 Q2 12,981 3 0 231.1
2013 Q1 9,084 2 1 220.2
2012 Q4 10,156 0 0 0.0
2012 Q3 10,779 0 0 0.0
2012 Q2 10,533 0 0 0.0
2012 Q1 10,589 0 0 0.0
2011 Q4 7,429 0 0 0.0
2011 Q3 13,791 0 0 0.0
2011 Q2 12,596 0 0 0.0
2011 Q1 12,244 0 0 0.0
2010 Q4 11,971 4 0 334.1
2010 Q3 14,531 0 0 0.0
2010 Q2 14,470 1 0 69.1
2010 Q1 12,243 0 0 0.0
2009 Q4 12,515 1 0 79.9
2009 Q3 12,377 0 0 0.0
2009 Q2 13,193 0 0 0.0
2009 Q1 12,973 0 0 0.0
2008 Q4 14,279 0 0 0.0
2008 Q3 17,785 0 0 0.0
2008 Q2 20,057 0 0 0.0
2008 Q1 16,137 1 0 62.0
2007 Q4 15,049 4 2 265.8
2007 Q3 17,376 0 0 0.0
2007 Q2 19,275 6 0 311.3
2007 Q1 19,018 4 0 210.3
2006 Q4 16,647 0 0 0.0
2006 Q3 18,012 1 0 55.5
2006 Q2 16,070 0 0 0.0
2006 Q1 17,505 0 0 0.0
2005 Q4 15,268 0 0 0.0
2005 Q3 14,863 0 0 0.0
2005 Q2 15,428 0 0 0.0
2005 Q1 15,255 0 0 0.0
2004 Q4 15,039 4 1 266.0
2004 Q3 14,964 0 0 0.0
2004 Q2 15,476 0 0 0.0
2004 Q1 13,841 0 0 0.0
2003 Q4 15,093 0 0 0.0
2003 Q3 13,605 5 4 367.5
2003 Q2 12,259 0 0 0.0
2003 Q1 12,806 0 0 0.0
2002 Q4 11,171 0 0 0.0
2002 Q3 13,075 0 0 0.0
2002 Q2 12,709 0 0 0.0
2002 Q1 12,286 4 0 325.6
2001 Q4 13,175 1 0 75.9
2001 Q3 14,657 10 3 682.3
2001 Q2 16,021 0 0 0.0
2001 Q1 15,024 0 0 0.0
2000 Q4 12,770 0 0 0.0
2000 Q3 13,776 0 0 0.0
2000 Q2 12,056 0 0 0.0
2000 Q1 9,558 5 0 523.1
No fatalities recorded at this mine.

Reportable incidents

44 on file

2024 · 1 incident

August 19, 2024 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman STRIKING OR BUMPING
CalMat Co · Struck against stationary object

While Employee was walking up a staircase, accessing a conveyor catwalk, Employee moved right arm and engaged a broken sign causing a laceration in the right forearm.

2023 · 1 incident

June 15, 2023 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
CalMat Co · Struck by flying object

Employee was standing too close to another coworker when a bearing was being removed. It broke loose and struck their lip, splitting it. They needed stitches. No lost time at work beyond the end of that shift. No time off work or work restrictions required by medical personal.

2022 · 1 incident

January 14, 2022 AZ · Metal/Non-Metal outside foreman, leadman SLIP OR FALL OF PERSON
CalMat Co · Fall to lower level, (Not Elsewhere Classified)

On 1/14/22 EE experienced first aid injuries when EE fell through a catwalk. On 6/15 EE had EE's shoulders medically checked. EE was released to full-duty and light physical therapy. On 8/15 EE was still having discomfort, a MRI showed a slight tear in both shoulders. EE had surgery on EE's right shoulder on 10/10/22.

2019 · 1 incident

May 4, 2019 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
CalMat Co · Struck by... (Not Elsewhere Classified)

On 5/4/19 employee was taken to the local hospital where EE received surgery for a puncture wound. While greasing the left lift cylinder of the 775E haul truck, and holding the grease lines together, the grease gun came loose of the grease zirk resulting in a puncture to the left thumb.

2018 · 1 incident

July 12, 2018 AZ · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant STRIKING OR BUMPING
CalMat Co · Struck against stationary object

A sharp object was in a chute EE was examining with another employee and attempted to avoid it while exiting chute. Object snagged EE's safety vest and cut employee while exiting.

2015 · 1 incident

October 2, 2015 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (REPEATED TRAUMA)
CalMat Co · Rubbed or abraded

On 10/21/15, Employee requested and received medical treatment for an injury that occurred on 10/2/15. He was taken to the Company clinic and was placed on modified duty which was accommodated. The employee reported that kneeling on both knees to cut a steel plate resulted in L-knee pain and swelling. He was diagnosed with Prepatellar bursitis.

2014 · 2 incidents

April 17, 2014 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Caught in, under or between (Not Elsewhere Classified)

The employee was taken to the Company clinic on 4/17/14 and was placed on restricted duty which was accommodated. While changing a screen cloth with a co-worker, the employee's R-hand was caught between a wrench and the metal framework. The employee was diagnosed with a R-hand contusion and released to full duty on 04/28/14.

March 17, 2014 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
CalMat Co · Fall down stairs

The employee requested medical treatment on 3/18/14, was taken to the company clinic and placed on restricted duty which is being accommodated part-time. The employee has a pre-existing back condition which possibly aggravated when he slipped on a step while descending stairs. The employee was diagnosed with a Lumbar Strain. Claim is questionable.

2012 · 1 incident

April 9, 2012 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
CalMat Co · Over-exertion (Not Elsewhere Classified)

On 04/10/2012 employee was taken to the company clinic, was diagnosed with a right shoulder sprain and was placed on restricted duty. The employee reported while descending the ladder on a loader, his right foot slipped off causing him to lose grip with left hand and placed weight on right arm and shoulder.

2010 · 1 incident

April 6, 2010 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
CalMat Co · Fall to the walkway or working surface

On 04/07/2010 employee requested medical treatment and was placed on modified duty for an injury that occurred on 04/06/2010. Employee reported while walking to the truck, employee fell to the ground after tripping on a clump of dirt, which resulted in a left shoulder strain and left toe sprain.

2008 · 4 incidents

October 21, 2008 AZ · Metal/Non-Metal refuse truck driver, backfill truck driver, stock pile truck driver SLIP OR FALL OF PERSON
CalMat Co · Fall to the walkway or working surface

EE was washing a sweeper truck with a pressure washer. While walking backwards, he tripped over a concrete parking block. He was taken to the industrial clinic where he was diagnosed with minor contusions and an abrasion and was referred to a hand specialist.The hand specialist diagnosed him w/a radius fracture to the left wrist.

July 14, 2008 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
CalMat Co · Fall onto or against objects

Employee was descending down the ladder on a PC1100LC-6 excavator when he slipped hitting his wrist and hand on the tracks.

March 28, 2008 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
CalMat Co · Struck by falling object

Tech was working on the engine of a HD605 Haul truck. When another tech lifted the hood with a crane, the hood slipped and fell on the tech working on the engine hitting his head. The tech had a hard hat on, but substained a strained to his neck.

March 6, 2008 AZ · Metal/Non-Metal welder (shop) SLIP OR FALL OF PERSON
CalMat Co · Fall onto or against objects

Employee stated that he fell while stepping over trailer to retrieve parts from the back of truck, resulting in sprain of right third finger. Became reportable following medical treatment on 04/04/2008.

2007 · 5 incidents

October 18, 2007 AZ · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDLING OF MATERIALS
CalMat Co · Over-exertion (Not Elsewhere Classified)

The employee requested to go to the company clinic on 10/19/2007 and was placed on restricted duty. While exiting the VMC excavator, the employee stepped on the last step of ladder with R-toes only, causing an alleged sprain to R-great toe.

September 22, 2007 AZ · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management HANDLING OF MATERIALS
CalMat Co · Struck by falling object

While removing a part from the haul truck, pressure from suspension was released, allowing truck frame to fall.

July 31, 2007 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
CalMat Co · Caught in, under or between (Not Elsewhere Classified)

Employee was installing an electric motor; motor moved quickly and pinched his hand between motor and I-beam structure.

February 28, 2007 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Over-exertion in pulling or pushing objects

Employee was rolling a bearing housing down the walkway when he felt pain in his lower back.

January 14, 2007 AZ · Metal/Non-Metal welder (shop) MACHINERY
CalMat Co · Contact with hot objects or substances

Employee was chipping a weld and a piece of hot slag entered his left eye. He was wearing clear safety glasses and a welding hood

2006 · 1 incident

November 2, 2006 AZ · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider STEPPING OR KNEELING ON OBJECT
CalMat Co · Struck against stationary object

Employee was cleaning up work slab at secondary crusher, lifting scrap steel into tractor bucket. He caught his heel on another piece of steel and twisted his right knee.

2005 · 3 incidents

October 5, 2005 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
CalMat Co · Fall to the walkway or working surface

While cleaning up after a job, employee was carrying a bucket of tools that weighted approx. 15 lbs in his left hand and a bucket of flexcos in his right hand. He stepped off the concrete slab onto dirt surface, walked approx. three feet, stepped on a rock and lost footing. Right leg turned under and twisted. Employee fell to the ground and called for help.

September 19, 2005 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalMat Co · Struck by... (Not Elsewhere Classified)

Employee was repairing hydraulic leak on accumulator on HP500 cone crusher when pressurized hydraulic fluid was released from the accumulator causing employee to strike himself in the chest with a pipe wrench.

January 7, 2005 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Struck against stationary object

While removing old rollers and guarding for belt #3 - cut top of left hand on sharp steel.

2004 · 2 incidents

July 28, 2004 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalMat Co · Caught in, under or between a moving and a stationary object

Employee went to see company doctor on 7/28/04 and was placed on restricted duty. Employee was helping electrician fill trench with concrete. Smashed finger when flipped chute down, causing contusion and open wound to his right index finger.

March 10, 2004 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
CalMat Co · Over-exertion (Not Elsewhere Classified)

Employee went to see company doctor on 3/12/04 and was placed on restricted duty. Employee stepped onto conveyor for a mechanical repair causing internal derangement to left knee.

2000 · 2 incidents

February 17, 2000 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STEPPING OR KNEELING ON OBJECT
Calmat Company Of Arizona · Struck against stationary object

EMPLOYEE INJURED SELF ON 2/17/00. STEPPED OUT OFTRUCK AND STEPPEN ON ROCK TWISTING KNEE. EMPLOYEE DIDN'T REPORT INJURY UNTIL 4/23/00. WENT TO DOCTOR AND HAD SURGERY SCHEDULED FOR 5/4/00. HE RE TURNED TO LIGHT DUTY 5/12/00 (5 DAYS OFF).

February 10, 2000 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Calmat Company Of Arizona · Over-exertion (Not Elsewhere Classified)

EE WENT TO CLINIC REGARDING THIS INJURY ON 2-16-00 AT 8:40 AM AND IS ON LIGHT DUTY AS OF 2-16-00. WHILE TURNING WHEELS ON CONVEYOR STACKER, PULLED MUSCLE BEHIND LEFT SHOULDER.

1999 · 3 incidents

November 2, 1999 AZ · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider HANDLING OF MATERIALS
Calmat Company Of Arizona · Absorption of radiations, caustics, toxic and noxious substances

DOING CLEAN UP.

1998 · 4 incidents

July 25, 1998 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Calmat Company Of Arizona · Struck by... (Not Elsewhere Classified)

CUT ABOVE RIGHT KNEE WHILE CUTTING CONVEYOR BELT.

July 14, 1998 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Calmat Company Of Arizona · Struck by... (Not Elsewhere Classified)

WHILE PULLING CONVEYOR BELT TOGETHER TO RESPLICE RING BROKE THEREFORE BELT CLAMP STRUCK EMPLOYEE.

1993 · 1 incident

March 10, 1993 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Calmat Company Of Arizona · Struck by... (Not Elsewhere Classified)

WHILE LETTING CAT WALK DOWN, THE LADDER SWUNG OVER STRIKING EMPLOYEE ON THE RIGHT SHOULDER.

1992 · 5 incidents

September 24, 1992 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Calmat Company Of Arizona · Over-exertion in lifting objects

EMPLOYEE WAS PUTTING CHANNEL IRON INTO A RACK WHEN HE STRAINED HIS RIGHT SHOULDER AND RIGHT ARM.

August 10, 1992 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Calmat Company Of Arizona · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS USING A HEEL BAR TO PRY ON A BEARING ON THE CONVEYOR WHEN THE BAR SLIPPED OFF, CUTTING HIM ABOVE THE RIGHT EYEBROW.

July 21, 1992 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Calmat Company Of Arizona · Fall to lower level, (Not Elsewhere Classified)

EMPLOYEE WAS CLIMBING DOWN A DRY SHAFT WHEN HE SLIPPED ON SOME LOOSE ROCKS AND FELL INTO A HOLE INJURING HIS LEFT WRIST AND FOREARM.

June 11, 1992 AZ · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider SLIP OR FALL OF PERSON
Calmat Company Of Arizona · Fall onto or against objects

EMPLOYEE WAS ADJUSTING THE FLOP GATE FOR THE WET PLANT FEED WHEN HE SLIPPED AND INJURED THE LEFT SIDE OF HIS BACK ON AN ANGLE IRON BRACE.

March 9, 1992 AZ · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
Calmat Company Of Arizona · Caught in, under or between a moving and a stationary object

EMPLOYEE WAS MOVING CONVEYORS WHEN HE PINCHED HIS RIGHT HAND BETWEEN THE CONVEYOR AND THE BOOM TRUCK.

1991 · 2 incidents

September 30, 1991 AZ · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Calmat Company Of Arizona · Over-exertion (Not Elsewhere Classified)

PUTTING GUARD IN PLACE ON CONE CRUSHER TWISTED LEFT WRIST.

August 28, 1991 AZ · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider SLIP OR FALL OF PERSON
Calmat Company Of Arizona · Fall onto or against objects

WHILE SERVICING SHAKER, EMPLOYEE SLIPPED AND LANDED ON HANDRAIL INJURING GROIN AREA.

1990 · 1 incident

January 22, 1990 AZ · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger SLIP OR FALL OF PERSON
Calmat Company Of Arizona · Fall from machine

EMPLOYEE STEPPED OFF BACK OF CRANE SLIPPED & LANDED ON BALL OF LEFT FOOT

1984 · 1 incident

March 19, 1984 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
U S Rock · Struck by falling object

WORKMAN WENT INTO AREA OF ROCK DISCHARGE FROM DRY SCREENING PLANT WORKMAN WAS TOLD NOT TO GO INTO THIS AREA WHEN SCREEN PLANT IN OPERATION ROCK CAME OFF SCREEN PLANT AND LANDED ON FOOT OF WORK MAN

For insurers, brokers, and safety consultants

The full compliance file on West 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.