← Back to search

Portable Crushing Plant #1 Metal/Non-Metal

Strata Corporation · Surface

Controlled by Knife River Corporation

Mentor, Polk County, MN · Intermittent

MSHA Mine ID: 2102843

Watch this mine

Email me when a new MSHA incident is filed at Portable Crushing Plant #1.

Fatalities: 1
Total incidents: 5
Years on record: 2000–2020
Latest incident: Jun 2020

Compliance record

MSHA citations since 2001

citations

significant & substantial

$425,065

proposed penalties

$377,946

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Per 1M hrs
2025 Q4	3,535	0.0
2025 Q3	0
2025 Q2	0
2025 Q1	0
2024 Q4	1,127	0.0
2024 Q3	0
2024 Q2	0
2024 Q1	0

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

Fatalities at this mine

1 recorded

July 26, 2012 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer Fatality · POWERED HAULAGE

Strata Corporation · Fall from machine

Full details are not yet known. Employee was lubricating a conveyor and the conveyor was started. Injuries are either from being thrown from the conveyor or being trapped in machinery.

Reportable incidents

4 on file (excluding fatalities above)

2020 · 1 incident

June 26, 2020 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer STEPPING OR KNEELING ON OBJECT

Strata Corporation · Struck against stationary object

Employee stepped out of excavator and onto large rock without seeing it causing ankle to roll.

2008 · 1 incident

August 25, 2008 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer STEPPING OR KNEELING ON OBJECT

Strata Corporation · Struck against stationary object

Employee stepped on a rock while climbing down from a loader, twisted and rolled his right ankle.

2007 · 1 incident

November 12, 2007 MN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)

Strata Corporation · Struck by... (Not Elsewhere Classified)

Employee was in the process of cutting a piece of rebar, when the rebar snapped back and hit the employee in the chin and neck, causing deep lacerations.

2000 · 1 incident

July 13, 2000 MN · Metal/Non-Metal miner, nec HANDLING OF MATERIALS

Strata Corporation · Over-exertion (Not Elsewhere Classified)

ALLEDGED INJURY TO RIGHT SHOULDER, PREVIOUS VA INURY, WHILE FUELING DOZER. NOT REPORTED UNTIL 7-17-2000. CLERICAL ISSUE, WHEN TIME CARD RECEIVED.