Mining Incidents

Rialto Metal/Non-Metal

Robertson's · Surface
Rialto, San Bernardino County, CA  ·  Active
MSHA Mine ID: 0405392

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Fatalities
0
Total incidents
14
Years on record
2002–2025
Latest incident
Oct 2025
Compliance record
MSHA citations since 2000
210
citations
49
significant & substantial
$73,063
proposed penalties
$70,635
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 10,488 0 0 0.0
2025 Q3 10,972 1 0 91.1
2025 Q2 733 0 0 0.0
2025 Q1 700 1 1 1428.6
2024 Q4 9,103 0 0 0.0
2024 Q3 10,605 0 0 0.0
2024 Q2 712 0 0 0.0
2024 Q1 7,751 0 0 0.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

14 on file

2025 · 1 incident

October 17, 2025 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman STRIKING OR BUMPING
Robertson's · Struck against stationary object

Miner bumped EE's head on equipment frame exiting a skid steer. Miner was wearing a hardhat.

2019 · 1 incident

December 23, 2019 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Robertson's · Over-exertion (Not Elsewhere Classified)

Miner was descending down the stairs of 992 front end loader when they slipped on steps slid down 2 steps but remained upright never falling. The steps were wet from the rain and the miner strained their left lower back.

2018 · 1 incident

April 18, 2018 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Robertson's · Fall onto or against objects

Removing troughing roller, slipped & struck hand on ladder.

2016 · 1 incident

July 12, 2016 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Robertson's · Over-exertion (Not Elsewhere Classified)

Miner has re-aggravated prior injury from 12-28-15

2015 · 2 incidents

December 28, 2015 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Robertson's · Over-exertion in wielding or throwing objects

Miner was shoveling a deck hit when the shovel hit an uneven surface causing his right arm to be pushed back. Miner has right forearm and elbow strain.

November 2, 2015 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Robertson's · Struck against a moving object

The haul road was slick due to rain. The haul truck lost control and rolled over on right side. The operator was knocked out for 2 to 3 minutes at time of incident. After further exam at clinic is right wrist was sprained.

2011 · 1 incident

June 23, 2011 CA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider SLIP OR FALL OF PERSON
Robertson's · Fall from scaffolds, walkways, platforms

Employee failed to follow Company procedures for safe access when entering belt press area. Employee removed a removable catwalk (only used when replacing the gear box is necessary. The gear box is lowered through the opening using a crane) and proceeded to climb down framework to catwalk 5 ft below. While climbing down, employee slipped and fell approx 3 feet.

2009 · 1 incident

May 11, 2009 CA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider EXPLOSIVES AND BREAKING AGENTS
Robertson's · Struck by flying object

Injury was standing approximately 6' from a 400 horsepower motor to a cone crusher when a mechanical failure caused the fan to come apart inside the fan housing which in turn exploded and one of the many pieces of the fan assembly struck him in his right leg 6" above his ankle thus breaking his leg

2007 · 1 incident

November 27, 2007 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Robertson's · Struck by... (Not Elsewhere Classified)

While pulling wire through a conduit pipe on a 500' run with a p/u truck, the rope we used to pull the electrical wire with was tied in a square knot around a 6" C-clamp which was attached through one of the loops on the trailer hitch assembly. The clamp twisted off the hitch assembly & hit the employee above the right knee on the side of his leg leaving a very small cut.

2006 · 1 incident

July 13, 2006 CA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider HANDLING OF MATERIALS
Robertson's · Caught in, under or between a moving and a stationary object

EE was removing a return roller and when he rolled it out of the bracket he got his middle finger on his left hand slightly smashed between the roller and the roller bracket. We weren't even aware he went to the clinic until he turned paperwork in 3 weeks later.

2005 · 1 incident

December 14, 2005 CA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider SLIP OR FALL OF PERSON
Robertson's · Fall from machine

The employee was working with another EE off a man-lift without a safety harness. The man-lift needed to be moved & he elected to stay on the belt without being strapped in, and at some point got impatient & he took it upon himself to walk down the belt leading to the belt press and lost his balance and falling approximately 16' breaking a bone above his right ankle.

2003 · 1 incident

February 14, 2003 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
Robertson's · Struck against a moving object

EE HAD BEEN WORKING ON A PIECE OF EQUIPMENT WHEN HE WAS DONE HE DROVE AROUND THE EQUIPMENT ONTO THE HAUL ROAD WITHOUT LOOKING AND WAS HIT BY THE HAUL TRUCK.

2002 · 2 incidents

April 29, 2002 CA · Metal/Non-Metal water truck operator SLIP OR FALL OF PERSON
Robertson's · Fall to the walkway or working surface

Employee was hosing around the Thickner when he slipped and fell, hurting his shoulder.

March 23, 2002 CA · Metal/Non-Metal truck driver SLIP OR FALL OF PERSON
Robertson's · Fall to the walkway or working surface

EMPLOYEE WAS WALKING TO THE THICKER AREA WHEN HESLIPPED AND FELL ON A SLOPE STRAINING HIS ELBOW.