Mining Incidents

Concrete, Inc DBA Knife River Metal/Non-Metal

Knife River · Surface
Controlled by Knife River Corporation
Lodi, San Joaquin County, CA  ·  Active
MSHA Mine ID: 0405140

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Fatalities
0
Total incidents
22
Years on record
2000–2025
Latest incident
Mar 2025
Compliance record
MSHA citations since 2000
156
citations
32
significant & substantial
$37,059
proposed penalties
$36,254
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 3,522 1 0 283.9
2025 Q3 3,000 0 0 0.0
2025 Q1 1,611 2 1 1241.5
2024 Q4 3,342 0 0 0.0
2024 Q3 1,005 3 0 2985.1
2024 Q2 2,875 0 0 0.0
2023 Q4 883 0 0 0.0
2023 Q3 4,303 2 0 464.8
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

22 on file

2025 · 1 incident

March 18, 2025 CA · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker SLIP OR FALL OF PERSON
Knife River · Fall from machine

Miner was working on top of a water tank that was approx. 7' tall. Miner was removing an Air Compressor that inserts pressure into the water tank. As miner proceeded to remove it, the compressor suddenly propelled forward with enough force to strike miner on the face and chest area. Miner fell sideways to the ground hurting right leg.

2015 · 1 incident

June 18, 2015 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
Knife River · Absorption of radiations, caustics, toxic and noxious substances

Employee believes he was bit by a spider on 06/18/15 while turning on water pump. Employee did not inform supervisor of bite until 06/19/15 employee did not want to receive medical treatment. On 6/23/15 the location had become infected employee was sent to receive medical treatment. Employee has been and remains on Full Duties.

2014 · 1 incident

September 27, 2014 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Knife River · Caught in, under or between a moving and a stationary object

While performing maintenance on pump 904 employee was assisting with re-attaching the discharge hose to the pump when his right thumb was injured when pinched between the pipe and hoist. Injury consisted of fracture and laceration (2 stitches) to tip of right thumb.

2006 · 3 incidents

August 22, 2006 CA · Metal/Non-Metal outside foreman, leadman DISORDERS (REPEATED TRAUMA)
KRC Aggregate Inc · (Not Elsewhere Classified)

Yearly audiograms detected recordable shift in hearing loss on 8/22/06. Sent in for retest on 9/6/06 that confirmed loss. No loss of time or job restrictions.

August 22, 2006 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DISORDERS (REPEATED TRAUMA)
KRC Aggregate Inc · (Not Elsewhere Classified)

Yearly audiograms detected recordable shift in hearing loss on 8/22/06. Sent in for retest on 9/6/06 that confirmed loss. No loss of time or job restrictions.

May 16, 2006 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

Mobile crane was stranded in the road due to hydraulic hose leak - while attempting to fix, employee strained his shoulder because of the awkward position/location of hose. He strained his right shoulder attempting to remove hose and further aggravated it putting hose back on. Originally first aid only - 6-1-06 recordable.

2003 · 3 incidents

October 28, 2003 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

WHEN EE EXITED THE SERVICE TRUCK HE WALKED INTO THE SHOP AND FELT PAIN IN HIS LEFT KNEE. THE PAIN GOT GRADUALLY WORSE AS THE DAY WENT ON. THE GROUND WAS DRY, LEVEL AND NOT SLIPPERY. THE KNEE H AD SWELLING 3 DAYS LATER.

August 6, 2003 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

EE FINISHED A TASK WHERE HE HAD PERSPIRED HEAVILY. HE WENT TO LUNCH IN AN AIR CONDITIONED ROOM AND HE APPARENTLY CAUGHT A CHILL DURING THAT TIME. WHEN HE WENT BACK TO WORK, HE EXPERIENCED CRAM PING IN HIS LOWER BACK. HE CANNOT RECALL AN INCIDENT WHERE HE LIFTED, BENT ETC THAT HURT HIMSELF.

May 17, 2003 CA · Metal/Non-Metal truck driver POWERED HAULAGE
KRC Aggregate Inc · Struck against a moving object

THE TRUCK WHEEL IMPACTED A BERM CAUSING THE OPERATOR TO IMPACT THE INSIDE OF THE CAB RESULTING IN A SHOULDER BRUISE AND INJURY.

2002 · 6 incidents

November 20, 2002 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
KRC Aggregate Inc · Fall onto or against objects

EE STUMBLED & FELL ON HIS BUTTOCKS. HE WAS CARRYING A RADIO IN HIS BACK POCKET. HE SAT ON HIS RADIO, BRUSING HIS BUTTOCK.

October 25, 2002 CA · Metal/Non-Metal miner, nec HANDLING OF MATERIALS
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

AFTER PICKING UP HIS TOOLS, EE TURNED AND FELT A POP IN HIS KNEE. THE KNEE BECAME TENDER AND STARTED TO SWELL.

July 27, 2002 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

EE TRIED TO STOP A HEAVY BEARING FROM FALLING DOWN A STEP. HE GRABBED IT BUT IT WAS TOO HEAVY, INJURING HIS SHOULDER.

March 22, 2002 CA · Metal/Non-Metal mine manager, mine foreman, mine owner POWERED HAULAGE
KRC Aggregate Inc · Struck against a moving object

I WAS OPERATING THE LOADER. THE REAR WHEEL FELL IN A HOLE CAUSING THE LOADER TO SWAY. I BRACED MYSELF IN THE CAB BY EXTENDING MY ARMS TO THE INSIDE SIDES OF THE CAB, ABSORBING THE SHOCK. NO IN JURY WAS SUSTAINED AT THAT TIME. HOWEVER, MY SHOULDER STARTED HURTING 2 HOURS LATER.

January 5, 2002 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator MACHINERY
KRC Aggregate Inc · Struck by flying object

AFTER GRINDING A STEEL OBJECT, EE CHECK IT & THEGRINDER BLEW OUT A PIECE OF STEEL INTO HIS EYE.

2001 · 2 incidents

November 26, 2001 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Caught in, under or between (Not Elsewhere Classified)

WHILE REPLACING THE FEEDER BELT, THE BELT SLIPPED DURING INSTALLATION AND PINCHED HIS FINGER, RESULTING IN THE INJURY.

June 29, 2001 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
KRC Aggregate Inc · Struck by... (Not Elsewhere Classified)

EE WAS CUTTING SOME PLASTIC WHEN THE SAW HE WAS USING KICKED BACK, CUTTING THE SKIN ON HIS STOMACH.

2000 · 5 incidents

November 25, 2000 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
KRC Aggregate Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS USING A SLEDGEHAMMER. HIS HAND SLIPPED AND HE PINCHED HIS FINGER BETWEEN THE HANDLE AND STEEL.

June 21, 2000 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Struck by... (Not Elsewhere Classified)

MECHANIC WAS REMOVING A HYDRAULIC PUMP WHEN IT SLIPPED, CUTTING HIS FINGER.

May 3, 2000 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

EE WAS GOING DOWN A FLIGHT OF STAIRS AND STOOPED OT PICK UP HIS CIGARETTE. HE FELT HIS KNEE POP AS HE BENT OVER.

March 22, 2000 CA · Metal/Non-Metal welder (shop) MACHINERY
KRC Aggregate Inc · Struck by... (Not Elsewhere Classified)

EE POSITIONED A STEEL BEAM TO WELD IT AND IT SPRANG AWAY CUTTING THE TOP OF HIS HAND. HE WAS WELDING A GUARD RAIL AT THE HOPPER.

February 28, 2000 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
KRC Aggregate Inc · Struck by falling object

WHILE MOVING SOME BOLTS ON THE SUPER SCRUBBER SOME DUST WAS LOOSENED, FALLING IN INJURED'S FACE AND EYE.