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Portable Crushing Plant #1 Metal/Non-Metal

Strata Corporation · Surface
Controlled by Knife River Corporation
Mentor, Polk County, MN  ·  Intermittent
MSHA Mine ID: 2102843

Portable Crushing Plant #1 has $425K in proposed MSHA penalties and $0 outstanding across 9 contested dockets, plus health sampling and the full incident record.

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Fatalities
1
Total incidents
8
Years on record
1993–2020
Latest incident
Jun 2020
Compliance record
MSHA citations since 2001
97
citations
35
significant & substantial
$425,065
proposed penalties
$377,946
paid to date
89% of proposed penalties paid to date, a $47,119 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
43
inspections on record
720
inspection hours
n/a
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.
Rate withheld: 720 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Portable Crushing Plant #1 has $425K in proposed MSHA penalties and $0 outstanding across 9 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.
$425K
proposed penalties
$378K
current assessed
$378K
paid to date
$0
outstanding
93 assessments are final orders; 9 contested dockets.
As of the most recent assessment on 2022-10-18.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also the operator's enforcement record
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 3,535 0 0 0.0
2025 Q3 2,549 0 0 0.0
2025 Q2 3,580 0 0 0.0
2025 Q1 0 0 0
2024 Q4 1,127 0 0 0.0
2024 Q3 2,707 0 0 0.0
2024 Q2 3,782 0 0 0.0
2024 Q1 0 0 0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 2,122 0 0 0.0
2023 Q3 3,518 0 0 0.0
2023 Q2 2,560 0 0 0.0
2023 Q1 0 0 0
2022 Q4 1,754 1 1 570.1
2022 Q3 3,490 0 0 0.0
2022 Q2 3,132 0 0 0.0
2022 Q1 0 0 0
2021 Q4 1,798 0 0 0.0
2021 Q3 2,793 0 0 0.0
2021 Q2 2,812 6 1 2133.7
2021 Q1 127 0 0 0.0
2020 Q4 1,951 0 0 0.0
2020 Q3 2,382 1 0 419.8
2020 Q2 3,309 0 0 0.0
2020 Q1 0 0 0
2019 Q4 1,301 0 0 0.0
2019 Q3 3,233 6 1 1855.9
2019 Q2 1,574 0 0 0.0
2019 Q1 0 0 0
2018 Q4 1,379 0 0 0.0
2018 Q3 4,514 0 0 0.0
2018 Q2 5,014 0 0 0.0
2018 Q1 0 0 0
2017 Q4 3,440 0 0 0.0
2017 Q3 3,389 0 0 0.0
2017 Q2 4,057 3 1 739.5
2017 Q1 596 0 0 0.0
2016 Q4 2,065 0 0 0.0
2016 Q3 4,815 0 0 0.0
2016 Q2 4,447 0 0 0.0
2016 Q1 677 0 0 0.0
2015 Q4 3,558 0 0 0.0
2015 Q3 5,670 0 0 0.0
2015 Q2 3,577 0 0 0.0
2015 Q1 692 0 0 0.0
2014 Q4 3,854 0 0 0.0
2014 Q3 5,274 0 0 0.0
2014 Q2 3,337 0 0 0.0
2014 Q1 1,080 0 0 0.0
2013 Q4 4,252 0 0 0.0
2013 Q3 4,986 6 0 1203.4
2013 Q2 3,517 0 0 0.0
2013 Q1 2,464 0 0 0.0
2012 Q4 5,988 23 10 3841.0
2012 Q3 5,442 26 12 4777.7
2012 Q2 6,546 0 0 0.0
2012 Q1 0 0 0
2011 Q4 1,994 0 0 0.0
2011 Q3 6,705 4 3 596.6
2011 Q2 6,293 0 0 0.0
2011 Q1 0 0 0
2010 Q4 1,970 0 0 0.0
2010 Q3 2,271 2 0 880.7
2010 Q2 2,041 0 0 0.0
2010 Q1 0 0 0
2009 Q4 137 0 0 0.0
2009 Q3 2,239 0 0 0.0
2009 Q2 1,786 0 0 0.0
2009 Q1 0 0 0
2008 Q4 3,081 0 0 0.0
2008 Q3 5,438 5 0 919.5
2008 Q2 3,102 0 0 0.0
2008 Q1 1,661 0 0 0.0
2007 Q4 2,381 0 0 0.0
2007 Q3 3,428 0 0 0.0
2007 Q2 3,493 0 0 0.0
2007 Q1 2,288 0 0 0.0
2006 Q4 2,948 0 0 0.0
2006 Q3 5,553 0 0 0.0
2006 Q2 4,271 0 0 0.0
2006 Q1 960 0 0 0.0
2005 Q4 3,843 0 0 0.0
2005 Q3 4,723 0 0 0.0
2005 Q2 4,258 0 0 0.0
2005 Q1 0 0 0
2004 Q4 4,702 4 1 850.7
2004 Q3 4,451 0 0 0.0
2004 Q2 3,468 0 0 0.0
2004 Q1 1,206 0 0 0.0
2003 Q4 2,884 0 0 0.0
2003 Q3 4,978 3 1 602.7
2003 Q2 4,980 0 0 0.0
2003 Q1 0 0 0
2002 Q4 1,548 0 0 0.0
2002 Q3 4,624 0 0 0.0
2002 Q2 2,075 2 1 963.9
2002 Q1 0 0 0
2001 Q4 325 0 0 0.0
2001 Q3 2,286 0 0 0.0
2001 Q2 1,248 4 3 3205.1
2001 Q1 0 0 0
2000 Q4 513 0 0 0.0
2000 Q3 1,854 0 0 0.0
2000 Q2 1,739 0 0 0.0
2000 Q1 721 0 0 0.0

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

7 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.

1994 · 2 incidents

July 27, 1994 MN · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Strata Corporation · Fall from machine

JUMPED DOWN FROM CRUSHER FRAME, APPROX 3 FT INJURED LEFT KNEE ON IMPACT. TORN CARTILAGE, AND PULLED TENDONS, PACKUP OF BLOOD AND FLUID.

June 22, 1994 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Strata Corporation · Caught in, under or between a moving and a stationary object

INDIVIDUAL WAS CHANGING SCREENS ON SCREEN DECK RAINING SCREEN SLIPPED & CUT END CAUGHT EMPLOYEES HAND

1993 · 1 incident

October 26, 1993 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Strata Corporation · Struck against a moving object

INDIVIDUAL EXPERIENCE PINCHED NERVE IN BACK FROM OPERATING LOADER.

For insurers, brokers, and safety consultants

The full compliance file on Portable Crushing Plant #1

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.

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