Mining Incidents

Crusher #1 Metal/Non-Metal

Controlled by Knife River Corporation
Boise, Ada County, ID  ·  Active
MSHA Mine ID: 1002089

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Fatalities
0
Total incidents
9
Years on record
2009–2024
Latest incident
Oct 2024
Compliance record
MSHA citations since 2006
100
citations
23
significant & substantial
$98,414
proposed penalties
$56,006
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 5,936 0 0 0.0
2025 Q3 6,455 0 0 0.0
2025 Q2 6,014 0 0 0.0
2025 Q1 4,940 9 2 1821.9
2024 Q3 6,320 4 0 632.9
2024 Q2 5,698 0 0 0.0
2022 Q4 9,728 0 0 0.0
2022 Q2 8,557 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

9 on file

2024 · 1 incident

October 30, 2024 ID · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
Knife River Corporation Mountain West · Bodily reaction, (Not Elsewhere Classified)

Employee bent down and knee popped and shooting pain up employee's leg.

2019 · 3 incidents

September 12, 2019 ID · Metal/Non-Metal outside foreman, leadman ELECTRICAL
Knife River Southern Idaho Division · Struck by flying object

Trouble shooting on electrical starter in control van. Employee went to de-energize breaker and the breaker malfunctioned causing small debris to discharge into employee's work area. Debris went inside the top employee's safety glasses. Employee suffered laceration to surface of eye and no impairment is expected.

February 28, 2019 ID · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Knife River Southern Idaho Division · Caught in, under or between a moving and a stationary object

The employee was trying to adjust a chain on the telescoping conveyor. The cable clamp holding the sliding conveyor in place came apart and the conveyor belt slid down crushing the employee.

2018 · 1 incident

August 7, 2018 ID · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE

The employee was on a conveyer belt. Harness was on. The employee failed to follow lockout tagout procedures. The belt was started and the employee jumped from the belt causing a hairline fracture to the right ankle. Employee is currently on light duty.

2017 · 1 incident

September 13, 2017 ID · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker MACHINERY
Knife River Southern Idaho Division · Caught in, under or between running or meshing objects

The employee attempted to stop a pulley and belt system with employee's left hand.

2014 · 1 incident

April 12, 2014 ID · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Knife River Southern Idaho Division · Caught in, under or between a moving and a stationary object

Running a half inch Drill Motor the bit caught and the drill twisted around and fractured the employees right hand,

2010 · 1 incident

November 30, 2010 ID · Metal/Non-Metal ledgeman/hand, quarry man MACHINERY
Knife River Southern Idaho Division · Struck by... (Not Elsewhere Classified)

Mine operator sitting in seat of excavator turned to see what other miner wanted as he had yelled. When he turned in the seat coat sleeve caught swing lever and swung excavator into other operator's foot.

2009 · 1 incident

July 21, 2009 ID · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Knife River · Contact with electrical current

Employee Failed to follow Posted Lock Out TagOut Procedure Wrench fell into electrical box and caused Arc Flash