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MAITRI CANYON PLANT Metal/Non-Metal

Controlled by Eric Werner; Pat Broyles
Corona, Riverside County, CA  ·  Active
MSHA Mine ID: 0403684

MAITRI CANYON PLANT has $126K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
1
Total incidents
10
Years on record
1985–2024
Latest incident
Oct 2024
Compliance record
MSHA citations since 2000
273
citations
79
significant & substantial
$126,027
proposed penalties
$120,291
paid to date
95% of proposed penalties paid to date, a $5,736 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
93
inspections on record
1,716
inspection hours
15.9
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.
273 citations across 1,716 inspection hours.
Source: MSHA inspections data, updated weekly.

MAITRI CANYON PLANT has $126K 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.
$126K
proposed penalties
$120K
current assessed
$120K
paid to date
$0
outstanding
272 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-01-22.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also the operator's enforcement record
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 24,853 0 0 0.0
2025 Q3 28,105 3 1 106.7
2025 Q2 28,777 0 0 0.0
2025 Q1 26,875 2 1 74.4
2024 Q4 23,840 0 0 0.0
2024 Q3 20,980 5 2 238.3
2024 Q2 21,384 0 0 0.0
2024 Q1 19,700 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 21,209 0 0 0.0
2023 Q3 22,229 3 1 135.0
2023 Q2 22,463 0 0 0.0
2023 Q1 19,864 0 0 0.0
2022 Q4 21,396 6 0 280.4
2022 Q3 22,453 0 0 0.0
2022 Q2 22,127 2 0 90.4
2022 Q1 21,427 0 0 0.0
2021 Q4 21,089 3 1 142.3
2021 Q3 23,262 1 0 43.0
2021 Q2 23,061 2 1 86.7
2021 Q1 23,425 3 1 128.1
2020 Q4 21,689 0 0 0.0
2020 Q3 21,337 0 0 0.0
2020 Q2 19,100 5 3 261.8
2020 Q1 20,276 5 1 246.6
2019 Q4 21,785 0 0 0.0
2019 Q3 22,674 0 0 0.0
2019 Q2 20,570 2 1 97.2
2019 Q1 20,412 0 0 0.0
2018 Q4 18,163 4 1 220.2
2018 Q3 18,954 0 0 0.0
2018 Q2 18,213 6 2 329.4
2018 Q1 17,127 9 6 525.5
2017 Q4 15,960 0 0 0.0
2017 Q3 14,904 2 0 134.2
2017 Q2 14,938 3 1 200.8
2017 Q1 15,274 4 0 261.9
2016 Q4 13,749 0 0 0.0
2016 Q3 14,830 0 0 0.0
2016 Q2 14,762 5 1 338.7
2016 Q1 14,570 0 0 0.0
2015 Q4 14,763 6 2 406.4
2015 Q3 14,041 0 0 0.0
2015 Q2 12,783 4 1 312.9
2015 Q1 12,020 0 0 0.0
2014 Q4 13,493 6 1 444.7
2014 Q3 14,253 0 0 0.0
2014 Q2 14,126 0 0 0.0
2014 Q1 14,022 1 0 71.3
2013 Q4 14,111 0 0 0.0
2013 Q3 13,484 3 1 222.5
2013 Q2 14,094 3 0 212.9
2013 Q1 14,524 0 0 0.0
2012 Q4 13,047 0 0 0.0
2012 Q3 13,537 0 0 0.0
2012 Q2 13,831 2 0 144.6
2012 Q1 14,914 4 0 268.2
2011 Q4 14,334 0 0 0.0
2011 Q3 14,298 0 0 0.0
2011 Q2 14,569 2 1 137.3
2011 Q1 13,052 0 0 0.0
2010 Q4 13,512 3 1 222.0
2010 Q3 14,633 0 0 0.0
2010 Q2 14,331 6 4 418.7
2010 Q1 14,764 4 2 270.9
2009 Q4 14,742 5 2 339.2
2009 Q3 17,855 8 3 448.1
2009 Q2 17,125 0 0 0.0
2009 Q1 15,061 2 1 132.8
2008 Q4 18,748 5 0 266.7
2008 Q3 18,400 1 0 54.3
2008 Q2 18,420 0 0 0.0
2008 Q1 17,474 1 0 57.2
2007 Q4 21,888 0 0 0.0
2007 Q3 21,962 2 0 91.1
2007 Q2 23,227 5 0 215.3
2007 Q1 21,833 0 0 0.0
2006 Q4 22,556 0 0 0.0
2006 Q3 21,655 3 0 138.5
2006 Q2 20,497 0 0 0.0
2006 Q1 20,724 8 1 386.0
2005 Q4 22,299 0 0 0.0
2005 Q3 21,880 7 0 319.9
2005 Q2 20,900 0 0 0.0
2005 Q1 19,788 14 1 707.5
2004 Q4 20,582 0 0 0.0
2004 Q3 21,847 0 0 0.0
2004 Q2 21,114 8 2 378.9
2004 Q1 21,225 22 6 1036.5
2003 Q4 21,479 0 0 0.0
2003 Q3 20,254 11 4 543.1
2003 Q2 20,821 0 0 0.0
2003 Q1 18,408 9 4 488.9
2002 Q4 20,256 0 0 0.0
2002 Q3 18,927 0 0 0.0
2002 Q2 18,537 8 1 431.6
2002 Q1 18,338 27 13 1472.4
2001 Q4 18,177 0 0 0.0
2001 Q3 19,609 0 0 0.0
2001 Q2 17,825 3 2 168.3
2001 Q1 15,933 0 0 0.0
2000 Q4 17,640 0 0 0.0
2000 Q3 14,159 0 0 0.0
2000 Q2 16,081 0 0 0.0
2000 Q1 17,410 3 1 172.3

Fatalities at this mine

1 recorded
January 31, 1985 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator Fatality · HANDTOOLS (NONPOWERED)
Foster Sand & Gravel · Caught in, under or between collapsing material or buildings

WHILE TRYING TO BREAK LOOSE BRIDGED MATERIAL AT SAND SURGE THE EE USING A PIECE OF REBAR WAS ENTRAPPED CAUSING A FATAL INJURY.

Reportable incidents

9 on file (excluding fatalities above)

2024 · 2 incidents

October 9, 2024 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Foster Sand & Gravel · Struck by flying object

Miner was changing the teeth on an excavator bucket (Cat 390 #1-15). The miner was using a hammer to strike the retaining pin on the tooth when a piece of steel broke and hit the miner in EE's right leg causing a laceration.

May 15, 2024 CA · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
Foster Sand & Gravel · Over-exertion (Not Elsewhere Classified)

Miner was climbing down from feeder and stepped on berm. Miner rolled right ankle. Medical evaluation revealed fracture of distal fibula.

2022 · 1 incident

November 28, 2022 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Foster Sand & Gravel · Fall onto or against objects

Miner was repairing the wash screw tub and was carrying a fabricated part to install. EE lost footing as EE walked under the tub and struck head on the flange of a nearby water pipe. EE received a laceration above the right eye. EE was taken to the clinic to receive treatment.

2021 · 1 incident

April 2, 2021 CA · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
Foster Sand & Gravel · Struck against stationary object

Employee (plant repairman) was removing welding hose from truck and cut thumb on the body of the truck.

2019 · 1 incident

December 3, 2019 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Foster Sand & Gravel · (Not Elsewhere Classified)

At approx 2:39 PM under cloudy cool conditions, EE had just completed repairs to vibratory screen (S-9) and had descended the catwalk to the ground. EE was preparing to enter the passenger side of the repair truck cab when EE succumbed to a seizure. Paramedics were called immediately and removed EE to seek medical attention.

2009 · 1 incident

January 30, 2009 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Foster Sand & Gravel · Fall from machine

Employee seems to have fallen out of his loader following fueling. He does not remember what happened, but evidence at the scene indicates that the nozzle was left in the tank as he drove away. Injuries to the employee include broken ankle, shoulder, ribs, nose, and facial fractures.

2005 · 1 incident

2000 · 1 incident

May 31, 2000 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Foster Sand & Gravel · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS REMOVING LOADER FROM BUCKET USING A SLEDGE HAMMER UPON STRIKING TOOTH A SLIVER OF METAL BROKE OFF AND PENETRATED LOWER LEG.

1992 · 1 incident

September 16, 1992 CA · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
Foster Sand & Gravel · Over-exertion in pulling or pushing objects

EMPLOYEE WAS PULLING A CONVEYOR BELT WITH A CABLE AND PULLEY ARRAINGEMENT WHEN THE CHAIN HOLDING THE BLOCK PULLEY BROKE & THE PULLEY STRUCK HIS FOOT.

For insurers, brokers, and safety consultants

The full compliance file on MAITRI CANYON 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.

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