Mining Incidents

West Coast Aggregate Supply Inc Metal/Non-Metal

Controlled by John R Struiksma
Thermal, Riverside County, CA  ·  Active
MSHA Mine ID: 0404209

West Coast Aggregate Supply Inc has $38K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at West Coast Aggregate Supply Inc.

Fatalities
0
Total incidents
17
Years on record
1992–2005
Latest incident
Oct 2005
Compliance record
MSHA citations since 2000
182
citations
40
significant & substantial
$37,790
proposed penalties
$35,594
paid to date
94% of proposed penalties paid to date, a $2,196 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
80
inspections on record
1,124
inspection hours
16.2
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.
182 citations across 1,124 inspection hours.
Source: MSHA inspections data, updated weekly.

West Coast Aggregate Supply Inc has $38K in proposed MSHA penalties and $0 outstanding across 2 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.
$38K
proposed penalties
$36K
current assessed
$36K
paid to date
$0
outstanding
182 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-04-29.
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 14,923 0 0 0.0
2025 Q3 18,893 0 0 0.0
2025 Q2 13,975 1 0 71.6
2025 Q1 13,712 0 0 0.0
2024 Q4 13,137 4 0 304.5
2024 Q3 13,226 0 0 0.0
2024 Q2 14,056 1 1 71.1
2024 Q1 13,715 3 1 218.7
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 13,775 0 0 0.0
2023 Q3 14,061 2 1 142.2
2023 Q2 14,412 0 0 0.0
2023 Q1 13,777 1 0 72.6
2022 Q4 13,773 0 0 0.0
2022 Q3 14,356 0 0 0.0
2022 Q2 14,421 2 1 138.7
2022 Q1 14,004 3 0 214.2
2021 Q4 17,814 0 0 0.0
2021 Q3 12,777 0 0 0.0
2021 Q2 10,995 3 1 272.9
2021 Q1 7,388 3 1 406.1
2020 Q4 11,659 0 0 0.0
2020 Q3 12,332 1 0 81.1
2020 Q2 12,797 0 0 0.0
2020 Q1 13,040 0 0 0.0
2019 Q4 13,838 6 3 433.6
2019 Q3 12,870 0 0 0.0
2019 Q2 13,605 3 0 220.5
2019 Q1 12,946 0 0 0.0
2018 Q4 10,231 2 1 195.5
2018 Q3 10,846 2 0 184.4
2018 Q2 11,704 0 0 0.0
2018 Q1 11,772 0 0 0.0
2017 Q4 13,475 1 1 74.2
2017 Q3 14,119 2 1 141.7
2017 Q2 13,475 0 0 0.0
2017 Q1 15,019 0 0 0.0
2016 Q4 12,673 1 0 78.9
2016 Q3 12,102 0 0 0.0
2016 Q2 10,799 1 0 92.6
2016 Q1 10,415 4 2 384.1
2015 Q4 7,263 0 0 0.0
2015 Q3 11,944 3 1 251.2
2015 Q2 10,867 0 0 0.0
2015 Q1 7,020 1 0 142.5
2014 Q4 10,135 0 0 0.0
2014 Q3 10,692 4 1 374.1
2014 Q2 7,989 0 0 0.0
2014 Q1 7,276 2 0 274.9
2013 Q4 7,957 0 0 0.0
2013 Q3 7,777 0 0 0.0
2013 Q2 6,552 0 0 0.0
2013 Q1 3,584 0 0 0.0
2012 Q4 6,595 2 0 303.3
2012 Q3 6,043 0 0 0.0
2012 Q2 7,821 2 0 255.7
2012 Q1 6,964 0 0 0.0
2011 Q4 5,401 3 1 555.5
2011 Q3 8,064 0 0 0.0
2011 Q2 8,448 0 0 0.0
2011 Q1 7,936 5 1 630.0
2010 Q4 6,804 0 0 0.0
2010 Q3 3,584 0 0 0.0
2010 Q2 3,798 0 0 0.0
2010 Q1 4,836 8 2 1654.3
2009 Q4 5,210 0 0 0.0
2009 Q3 8,580 0 0 0.0
2009 Q2 9,639 1 0 103.7
2009 Q1 8,060 0 0 0.0
2008 Q4 9,882 4 2 404.8
2008 Q3 9,472 0 0 0.0
2008 Q2 10,912 2 0 183.3
2008 Q1 8,131 0 0 0.0
2007 Q4 7,198 9 1 1250.3
2007 Q3 20,646 3 0 145.3
2007 Q2 19,026 0 0 0.0
2007 Q1 20,150 0 0 0.0
2006 Q4 19,825 10 2 504.4
2006 Q3 20,646 7 0 339.0
2006 Q2 20,879 0 0 0.0
2006 Q1 22,333 5 1 223.9
2005 Q4 20,799 2 1 96.2
2005 Q3 21,629 5 0 231.2
2005 Q2 18,512 0 0 0.0
2005 Q1 17,640 1 0 56.7
2004 Q4 15,320 0 0 0.0
2004 Q3 11,680 0 0 0.0
2004 Q2 10,600 4 0 377.4
2004 Q1 10,100 0 0 0.0
2003 Q4 10,400 6 0 576.9
2003 Q3 11,100 0 0 0.0
2003 Q2 10,391 3 0 288.7
2003 Q1 11,900 6 1 504.2
2002 Q4 11,900 0 0 0.0
2002 Q3 13,000 1 0 76.9
2002 Q2 12,888 1 0 77.6
2002 Q1 12,110 0 0 0.0
2001 Q4 13,230 0 0 0.0
2001 Q3 14,030 14 5 997.9
2001 Q2 14,452 0 0 0.0
2001 Q1 13,168 0 0 0.0
2000 Q4 12,666 5 2 394.8
2000 Q3 10,139 0 0 0.0
2000 Q2 9,364 2 0 213.6
2000 Q1 8,255 7 3 848.0
No fatalities recorded at this mine.

Reportable incidents

17 on file

2005 · 1 incident

October 28, 2005 CA · Metal/Non-Metal welder (shop) POWERED HAULAGE
West Coast Aggregate Supply Inc · Struck by... (Not Elsewhere Classified)

base of forklift struck a non-operable overhead crane which fell and landed on ee's legs. Inj employee's stomach/chest area ended up pinned against welding table.

1997 · 2 incidents

April 30, 1997 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Valley Rock & Sand Inc · Over-exertion (Not Elsewhere Classified)

UNKNOWN--EE STATEDHE HAD LOWER BACK PAIN00WAS NOT SURE WHAT CUASED IT--HE LATER STATED IT MAY HAVE BEEN CAUSED BY GETTING IN AND OUT OF THE TRUCK OR IT MAY HAVE BEEN WHEN HE WAS DOING SOME SHO VELING.

April 28, 1997 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Valley Rock & Sand Inc · Fall onto or against objects

EE WAS CLIMBING DOWN A FOUR STEP LADDER. WHEN HE REACHED THE BOTTOM STEP, HE TURNED AWAY TAKING HIS HANDS OFF THE LADDER. HE THEN SLIPPED AND IN AN EFFORT TO BREAK HIS FAL HE HIT HIS WRIST/FOR EARM ON A CONVEYOR.

1996 · 1 incident

January 30, 1996 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Valley Rock & Sand Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS CUTTING A TORN BELT CLIP OUT AND CUT HIS HAND IN THE PROCESS.

1995 · 1 incident

April 13, 1995 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Valley Rock & Sand Inc · Struck by falling object

EMPLOYEE WAS HELPING CLEAN OVERSIZE ROCKS OFF OF THE FEEDEER FRIZZLEY. WHILE TRYING OT FREE A ROCK ANOTHER ROCK BESIDE IT ROLLED OVER AN DSMASHED HIS MIDDLE FINGER ON THE RIGHT AND AT THE END OF THE FINGER.

1994 · 5 incidents

August 3, 1994 CA · Metal/Non-Metal welder (shop) MACHINERY
Valley Rock & Sand Inc · Struck by flying object

EKMPLOYEE WAS USING A AIR IMPACT WRENCH WHEN THE BOLT BROKE AND A SMALL PIECE OF STEEL GOT INTO HIS EYE.

June 30, 1994 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Valley Rock & Sand Inc · Fall from machine

EMPLOYEE WAS STEPPING DOWN OFF OF THE HAUL TRUCK AND MISS-JUDGED THE LAST STEP, CAUSING HIM TO TWIST HIS RIGHT KNEE.

June 9, 1994 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Valley Rock & Sand Inc · Fall onto or against objects

EMPLOYEE WAS STEPPING DOWN OFF A HAUL TRUCK. HE SAID HE MISSED THE LAST STEP CAUSING HIM TO FALL BACKWARDS ONTO A JACK STAND STRIKING HIM IN THE LOWER LEFT BACK.

March 18, 1994 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Valley Rock & Sand Inc · Over-exertion (Not Elsewhere Classified)

WORKING ON TRUCK. ARM BECAME SORE AT END OF SHIFT. DID NOT REPORT UNTIL MOND 3-21-94.

January 3, 1994 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Valley Rock & Sand Inc · Absorption of radiations, caustics, toxic and noxious substances

EE WAS CHECKING TRUCK PRIOR TO DIVING TO OTHER LOCATION DISTURBED ON APPARENT BEES NEST UNDER TRUCK.

1993 · 6 incidents

November 10, 1993 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Valley Rock & Sand Inc · Caught in, under or between (Not Elsewhere Classified)

TRANSFER- RING TRAILER INTO TRACTOR- CAUGHT HAND.

September 20, 1993 CA · Metal/Non-Metal welder (shop) SLIP OR FALL OF PERSON
Valley Rock & Sand Inc · Fall from machine

FUELING WELDING MACHINE ON T RK SLIPPED & FELL ON OILY DECK AS A RESULT OF THE FALL PULLED OR STRAIRED BACK

August 10, 1993 CA · Metal/Non-Metal welder (shop) MACHINERY
Valley Rock & Sand Inc · Struck by... (Not Elsewhere Classified)

DRILLING HOLE IN TRUCK FRAME AND THE BIT HUNG UP CAUSING THE DRILL TO KICK BACK, WHEN THIS OCCURED IT BROKE A BONE IN HIS RIGHT HAND.

June 21, 1993 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Valley Rock & Sand Inc · Struck by... (Not Elsewhere Classified)

INSERTING BEARING RACE INTO TRACTOR HUB HOLDING PART WITH LEFT HAND.

May 10, 1993 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Valley Rock & Sand Inc · Over-exertion in lifting objects

LIFTING TRAILER TONGUE.

January 26, 1993 CA · Metal/Non-Metal welder (shop) POWERED HAULAGE
Valley Rock & Sand Inc · Struck by falling object

MAN RUNNING BOOM TRUCK SWUNG LOAD AND HIT 40 FOOT TRAILER CAUSING LOAD TO FALL HITTING MAN ON HEEL.

1992 · 1 incident

For insurers, brokers, and safety consultants

The full compliance file on West Coast Aggregate Supply Inc

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.