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Northern Sand & Gravel Metal/Non-Metal

Strata Corp · Surface

Controlled by Knife River Corporation

Trail, Polk County, MN · Intermittent

MSHA Mine ID: 2100576

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Fatalities: 0
Total incidents: 6
Years on record: 2002–2020
Latest incident: Aug 2020

Compliance record

MSHA citations since 2000

citations

significant & substantial

$4,703

proposed penalties

$4,589

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	0
2025 Q3	2,266	0.0
2025 Q2	275	0.0
2025 Q1	0
2024 Q4	224	0.0
2024 Q3	584	0.0
2024 Q2	5,227	0.0
2024 Q1	0

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

No fatalities recorded at this mine.

Reportable incidents

6 on file

2020 · 1 incident

August 11, 2020 MN · Metal/Non-Metal miner, prospector, nec MACHINERY

Strata Corp · Caught in, under or between running or meshing objects

Employee cut the right index finger with a grinder while attempting to clean up workspace. Employee failed to unplug the grinder and hit the trigger when they picked it up.

2013 · 1 incident

May 15, 2013 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)

Strata Corp · Struck by flying object

Pounding on a loader tooth with a hammer.

2010 · 1 incident

June 21, 2010 MN · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)

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

Mechanics were hammaring a retaining bin into a bucket. The hammar glanced off of the pin and struck one mechanic in the mouth, loosening teeth.

2004 · 1 incident

November 29, 2004 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON

Strata Corp · Over-exertion (Not Elsewhere Classified)

Getting into a drill truck at mine site, he slipped on entry step, caught himself, but sprained or strained low back.

2003 · 1 incident

September 15, 2003 MN · Metal/Non-Metal NO VALUE FOUND

Strata Corp · No Value Found

MINER REPORT BACK PAIN ON 9-15-03, BUT NO SPECIFIC WORK RELATED CAUSE GIVEN MINER WENT TO CHIROPRACTOR AND RETURNED TO WORK ON 9-17-03. WORK COMP CLAIM FILED AND MINER REFERED TO MINER COMPLAI NED OF FURTHER BACK PAINS LOST TIME STARTED ON 9/25/03 NOT SURE IF WORK RELATED.

2002 · 1 incident

June 17, 2002 MN · Metal/Non-Metal mine manager, mine foreman, mine owner POWERED HAULAGE

Strata Corp · Caught in, under or between (Not Elsewhere Classified)

ATTEMPTING TO DISCONNECT/ UNCOUPLE RAIL CARS HELD COUPLER DISCONNECT TOO LONG AND WEDGED LEFT ARM BETWEEN PICKUP DOOR AND PICKUP.