Portable Plant #3 Metal/Non-Metal

Strata Corp · Surface

Controlled by Knife River Corporation

Grand Forks, Grand Forks County, ND · Intermittent

MSHA Mine ID: 3200150

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Compliance record

MSHA citations since 2000

citations

significant & substantial

$7,844

proposed penalties

$37,844

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	2,501	0.0
2025 Q3	3,335	0.0
2025 Q2	0
2024 Q4	2,163	0.0
2024 Q3	3,639	0.0
2024 Q2	4,038	0.0
2024 Q1	0
2023 Q4	2,506	0.0

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

No fatalities recorded at this mine.

1 on file

August 28, 2001 ND · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer STRIKING OR BUMPING

Strata Corp · Struck against stationary object

DURING PLANT SETUP EE WALKED TO BACK OF CRAWLER TO DO SOMETHING, STOOD UP TOO QUICKLY & HIT HIS HEAD ON RIPPER.