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

Concrete, Inc DBA Knife River has $37K in proposed MSHA penalties and $0 outstanding across 4 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
40
Years on record
1993–2025
Latest incident
Mar 2025
Compliance record
MSHA citations since 2000
156
citations
32
significant & substantial
$37,059
proposed penalties
$36,707
paid to date
99% of proposed penalties paid to date, a $352 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
67
inspections on record
1,112
inspection hours
14.0
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.
156 citations across 1,112 inspection hours.
Source: MSHA inspections data, updated weekly.

Concrete, Inc DBA Knife River has $37K in proposed MSHA penalties and $0 outstanding across 4 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.
$37K
proposed penalties
$37K
current assessed
$37K
paid to date
$0
outstanding
156 assessments are final orders; 4 contested dockets.
As of the most recent assessment on 2026-04-02.
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 3,522 1 0 283.9
2025 Q3 4,603 0 0 0.0
2025 Q2 3,399 2 0 588.4
2025 Q1 3,598 2 1 555.9
2024 Q4 3,342 0 0 0.0
2024 Q3 3,617 3 0 829.4
2024 Q2 4,038 0 0 0.0
2024 Q1 3,763 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 4,489 0 0 0.0
2023 Q3 4,303 2 0 464.8
2023 Q2 3,886 0 0 0.0
2023 Q1 3,754 0 0 0.0
2022 Q4 3,962 0 0 0.0
2022 Q3 4,479 0 0 0.0
2022 Q2 4,728 2 0 423.0
2022 Q1 4,540 0 0 0.0
2021 Q4 3,658 1 1 273.4
2021 Q3 4,168 0 0 0.0
2021 Q2 4,116 0 0 0.0
2021 Q1 4,180 0 0 0.0
2020 Q4 3,731 1 0 268.0
2020 Q3 4,484 1 0 223.0
2020 Q2 4,855 0 0 0.0
2020 Q1 4,254 0 0 0.0
2019 Q4 4,572 0 0 0.0
2019 Q3 4,316 1 0 231.7
2019 Q2 4,332 0 0 0.0
2019 Q1 4,031 0 0 0.0
2018 Q4 4,168 0 0 0.0
2018 Q3 4,547 0 0 0.0
2018 Q2 3,628 1 0 275.6
2018 Q1 2,878 0 0 0.0
2017 Q4 3,250 3 0 923.1
2017 Q3 3,670 0 0 0.0
2017 Q2 3,680 0 0 0.0
2017 Q1 2,762 2 0 724.1
2016 Q4 3,511 0 0 0.0
2016 Q3 3,874 0 0 0.0
2016 Q2 4,376 0 0 0.0
2016 Q1 3,604 0 0 0.0
2015 Q4 3,831 2 0 522.1
2015 Q3 4,510 0 0 0.0
2015 Q2 4,430 0 0 0.0
2015 Q1 3,662 0 0 0.0
2014 Q4 3,131 1 0 319.4
2014 Q3 3,835 1 0 260.8
2014 Q2 3,448 0 0 0.0
2014 Q1 2,394 0 0 0.0
2013 Q4 2,158 0 0 0.0
2013 Q3 2,424 0 0 0.0
2013 Q2 2,929 1 0 341.4
2013 Q1 2,145 0 0 0.0
2012 Q4 3,298 0 0 0.0
2012 Q3 3,669 2 0 545.1
2012 Q2 2,925 7 1 2393.2
2012 Q1 3,187 0 0 0.0
2011 Q4 3,459 0 0 0.0
2011 Q3 4,232 0 0 0.0
2011 Q2 2,613 1 0 382.7
2011 Q1 1,481 3 0 2025.7
2010 Q4 3,584 0 0 0.0
2010 Q3 5,255 6 2 1141.8
2010 Q2 2,906 2 1 688.2
2010 Q1 2,859 0 0 0.0
2009 Q4 2,904 6 0 2066.1
2009 Q3 2,889 0 0 0.0
2009 Q2 2,918 1 0 342.7
2009 Q1 2,391 2 1 836.5
2008 Q4 3,462 0 0 0.0
2008 Q3 4,333 0 0 0.0
2008 Q2 4,507 10 2 2218.8
2008 Q1 4,330 0 0 0.0
2007 Q4 6,029 7 2 1161.1
2007 Q3 8,129 0 0 0.0
2007 Q2 7,563 3 1 396.7
2007 Q1 9,943 6 3 603.4
2006 Q4 10,241 0 0 0.0
2006 Q3 12,329 0 0 0.0
2006 Q2 13,952 4 1 286.7
2006 Q1 15,576 12 3 770.4
2005 Q4 13,385 0 0 0.0
2005 Q3 16,959 4 0 235.9
2005 Q2 18,359 0 0 0.0
2005 Q1 13,857 3 0 216.5
2004 Q4 19,770 0 0 0.0
2004 Q3 18,620 10 0 537.1
2004 Q2 19,435 0 0 0.0
2004 Q1 14,335 2 1 139.5
2003 Q4 17,204 0 0 0.0
2003 Q3 14,333 5 1 348.8
2003 Q2 2,248 2 1 889.7
2003 Q1 13,246 0 0 0.0
2002 Q4 14,177 0 0 0.0
2002 Q3 11,150 9 2 807.2
2002 Q2 12,569 0 0 0.0
2002 Q1 9,673 0 0 0.0
2001 Q4 12,430 0 0 0.0
2001 Q3 14,447 4 2 276.9
2001 Q2 16,591 4 2 241.1
2001 Q1 23,305 0 0 0.0
2000 Q4 18,562 0 0 0.0
2000 Q3 18,694 11 4 588.4
2000 Q2 22,416 0 0 0.0
2000 Q1 15,939 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

40 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.

1999 · 9 incidents

December 30, 1999 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
KRC Aggregate Inc · Caught in, under or between a moving and a stationary object

THE PIPE EE WAS POSITIONING SLIPPED, PINCHING HIS FINGER BETWEEN THE PIPE AND AN "I" BEAM.

December 14, 1999 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)

EE WAS PRYING WITH A SCREWDRIVER. IT SLIPPED AND CUT HIS FINGER.

October 7, 1999 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
KRC Aggregate Inc · Caught in, under or between a moving and a stationary object

WHILE USING A PRYBAR, EMPLOYEE PINCHED HIS FINGERS BETWEEN THE PRYBAR AND SOME STEEL, CUTTING THEM.

September 13, 1999 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
KRC Aggregate Inc · Struck by... (Not Elsewhere Classified)

EE HAD JUST FINISHED WORKING AT A PROJECT AND WAS RESTING. A DROP OF SWEAT FELL INTO HIS EYE. THE NEXT DAY IT WAS INFLAMMED.

August 2, 1999 CA · Metal/Non-Metal POWERED HAULAGE
KRC Aggregate Inc · Struck against a moving object

OPERATOR APPEARS TO HAVE FALLEN ASLEEP WHILE OPERATING THE SCRAPER. HE RAN OFF THE ROAD AND HIT A WASHOUT CAUSING HIM TO HIT HIS HEAD. HE WAS WEARING HIS SEAT BELT.

July 31, 1999 CA · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
KRC Aggregate Inc · Struck by... (Not Elsewhere Classified)

WHILE CUTTING A STEEL REINFORCED HOSE, EMPLOYEE SLIPPED AND CUT HIS FINGER WITH A UTILITY KNIFE/STEEL BRAID.

July 13, 1999 CA · Metal/Non-Metal mine manager, mine foreman, mine owner HOISTING
KRC Aggregate Inc · Caught in, under or between (Not Elsewhere Classified)

WHILE HELPING THE MECHANIC FIT SOME METAL, THE HOIST JERKED, PINCHING THE THUMB.

June 30, 1999 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

WHILE PICKING UP DEBRIS AROUND THE SHOP EE STRAINED HIS BACK

April 27, 1999 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Struck by falling object

MECHANIC WAS INSTALLING A DRIVE LINE WHEN IT FELL, CUTTING HIS LEFT SMALL FINGER, RESULTING IN STITCHES.

1998 · 1 incident

March 30, 1998 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
KRC Aggregate Inc · Fall onto or against objects

WHILE CLEANING THE GRIZZLY, HE SLIPPED AND FELL ON A LARGE ROCK ON 3-30-98. HE SAW A DOCTOR ON 4-6-98.

1997 · 2 incidents

September 10, 1997 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
KRC Aggregate Inc · Over-exertion (Not Elsewhere Classified)

THE OPERATOR SLIPPED WHILE FUELING HIS MACHINE, TWISTING HIS KNEE.

September 2, 1997 CA · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDLING OF MATERIALS
KRC Aggregate Inc · Caught in, under or between (Not Elsewhere Classified)

WHILE MOVING A TRUCK TIRE, THE TIRE ROLLED UNEXPECTEDLY, AND PINCHED THE OPERATOR'S HAND.

1996 · 2 incidents

October 4, 1996 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
KRC Aggregate Inc · Absorption of radiations, caustics, toxic and noxious substances

CRAWLED UNDER SCRAPER TO CHECK FOR OIL LEAK OIL DROPPED IN LEFT EYE WASHED OUT IMMEDIATLY INJURY REPORTED 10-7-96.

June 19, 1996 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
KRC Aggregate Inc · Fall from machine

DRIVING SCRAPER TOO FAST, HIT A BUMP AND PANICKED, HIT BRAKES TOO HARD AND SCRAPER SLID OVER THE EMBANKMENT (TRACKS PART OF SCRAPER ONLY). HIT HIS HEAD INSIDE SCRAPER. FELL FROM SCRAPER 6-8' A FTER RELEASING SEAT BELT. INJURED BACK IN FALL.

1995 · 2 incidents

October 6, 1995 CA · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
KRC Aggregate Inc · Caught in, under or between a moving and a stationary object

MOVING BEAMS - THUMB SQUASHED BETWEEN 2 BEAMS.

May 17, 1995 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
KRC Aggregate Inc · Caught in, under or between (Not Elsewhere Classified)

NOT THINKING PROPERLY-SHOULD HAVE TURNED OFF EQUIPMENT BEFORE CLEANING AS TRAINED.

1994 · 1 incident

September 9, 1994 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
KRC Aggregate Inc · Over-exertion in lifting objects

WHILE MOVING THE BLADES INTO POSITION STRAINED LOWER BACK.

1993 · 1 incident

November 8, 1993 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
KRC Aggregate Inc · Struck by flying object

WATER AND SAND SPLASHED INTO HIS EYE WHILE WASHING OF THE FLOOR.

For insurers, brokers, and safety consultants

The full compliance file on Concrete, Inc DBA Knife River

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.