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218 Plant: 38 MSHA citations Metal/Non-Metal

Strata Corp · Surface
Controlled by Knife River Corporation
Halma, Polk County, MN  ·  Intermittent
MSHA Mine ID: 2101638

218 Plant has $5K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
6
Years on record
1989–2012
Latest incident
Apr 2012
Compliance record
MSHA citations since 2001
38
citations
8
significant & substantial
$4,662
proposed penalties
$4,662
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Strata Corp's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
40
inspections on record
390
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: 390 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2016-05-24.
On record since 2016.
Source: MSHA imminent-danger order records, updated weekly.

218 Plant has $5K in proposed MSHA penalties and $0 outstanding across 0 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
37 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-19.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘ Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
21.6%
significant & substantial
2.7%
high negligence or reckless
21.6%
reasonably likely or greater
51.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 24.3% low, 73.0% moderate, 2.7% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
ⓘ A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
ⓘ Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2021-06-23, 5 years ago
0%
of limit-tested samples over the exposure limit
10
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg8
  • Quartz, respirable, >1% Qtz2
Show the individual readings (10)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-06-23 Respirable dust, <.1mg 0 Backhoe Operator
2021-06-23 Quartz, respirable, >1% Qtz 0.4 0.81 0.49 Washer Operator
2021-06-23 Respirable dust, <.1mg 0 Bulldozer Operator
2021-06-23 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-10-24 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-10-24 Respirable dust, <.1mg 0 Front-end Loader Operator
2005-10-26 Respirable dust, <.1mg 0 Crusher Oper/Worker
2005-10-26 Respirable dust, <.1mg 0 Front-end Loader Operator
2005-10-26 Quartz, respirable, >1% Qtz 0.31 1.33 0.23 Front-end Loader Operator
2005-10-26 Respirable dust, <.1mg 0 Crusher Oper/Worker
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Strata Corp 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 6
2024 5
2023 7
2022 5
2021 6
2020 5
2019 5
2018 4
2017 4
2016 4
2015 5
2014 6
2013 5
2012 5
2011 4
2010 5
2009 4
2008 5
2007 4
2006 5
2005 5
2004 4
2003 4
2002 4
2001 4
2000 6
Source: MSHA quarterly employment and production, updated weekly.

218 Plant sits in Polk County, Minnesota, where the Census mining category is 0.1% of county employment.

Local economic context
ⓘ County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Polk County, Minnesota · Population 30,905
0.1%
Mining share of county employment
$69,136
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 2,102 0 0 0.0
2026 Q1 0 0 0
2025 Q4 3,101 1 0 322.5
2025 Q3 3,391 0 0 0.0
2025 Q2 2,108 0 0 0.0
2025 Q1 0 0 0
2024 Q4 1,597 0 0 0.0
2024 Q3 4,854 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 3,437 0 0 0.0
2024 Q1 0 0 0
2023 Q4 8,080 0 0 0.0
2023 Q3 5,794 0 0 0.0
2023 Q2 4,361 4 0 917.2
2023 Q1 0 0 0
2022 Q4 2,768 0 0 0.0
2022 Q3 4,250 0 0 0.0
2022 Q2 3,438 0 0 0.0
2022 Q1 0 0 0
2021 Q4 2,221 0 0 0.0
2021 Q3 4,273 0 0 0.0
2021 Q2 4,120 2 0 485.4
2021 Q1 475 0 0 0.0
2020 Q4 1,078 0 0 0.0
2020 Q3 4,708 0 0 0.0
2020 Q2 3,401 0 0 0.0
2020 Q1 0 0 0
2019 Q4 2,845 0 0 0.0
2019 Q3 2,790 0 0 0.0
2019 Q2 2,560 0 0 0.0
2019 Q1 0 0 0
2018 Q4 1,628 0 0 0.0
2018 Q3 3,535 0 0 0.0
2018 Q2 3,302 1 0 302.8
2018 Q1 0 0 0
2017 Q4 1,504 0 0 0.0
2017 Q3 2,514 0 0 0.0
2017 Q2 2,580 0 0 0.0
2017 Q1 600 0 0 0.0
2016 Q4 1,069 0 0 0.0
2016 Q3 2,923 0 0 0.0
2016 Q2 2,252 4 1 1776.2
2016 Q1 713 0 0 0.0
2015 Q4 2,432 0 0 0.0
2015 Q3 2,281 0 0 0.0
2015 Q2 1,430 0 0 0.0
2015 Q1 1,492 0 0 0.0
2014 Q4 3,084 0 0 0.0
2014 Q3 4,852 0 0 0.0
2014 Q2 3,634 0 0 0.0
2014 Q1 295 0 0 0.0
2013 Q4 3,707 1 0 269.8
2013 Q3 4,610 0 0 0.0
2013 Q2 3,227 0 0 0.0
2013 Q1 0 0 0
2012 Q4 2,587 0 0 0.0
2012 Q3 3,800 3 0 789.5
2012 Q2 3,072 0 0 0.0
2012 Q1 254 0 0 0.0
2011 Q4 2,288 0 0 0.0
2011 Q3 3,010 0 0 0.0
2011 Q2 2,607 2 2 767.2
2011 Q1 67 0 0 0.0
2010 Q4 1,434 0 0 0.0
2010 Q3 3,981 0 0 0.0
2010 Q2 3,416 0 0 0.0
2010 Q1 0 0 0
2009 Q4 228 2 1 8771.9
2009 Q3 3,067 0 0 0.0
2009 Q2 1,878 0 0 0.0
2009 Q1 0 0 0
2008 Q4 2,015 0 0 0.0
2008 Q3 4,400 2 1 454.5
2008 Q2 2,630 2 1 760.5
2008 Q1 766 0 0 0.0
2007 Q4 1,943 0 0 0.0
2007 Q3 2,523 1 0 396.4
2007 Q2 2,679 0 0 0.0
2007 Q1 520 0 0 0.0
2006 Q4 2,471 1 1 404.7
2006 Q3 4,610 0 0 0.0
2006 Q2 3,274 0 0 0.0
2006 Q1 880 1 0 1136.4
2005 Q4 3,390 1 0 295.0
2005 Q3 4,316 0 0 0.0
2005 Q2 3,737 1 0 267.6
2005 Q1 300 0 0 0.0
2004 Q4 2,676 0 0 0.0
2004 Q3 3,598 0 0 0.0
2004 Q2 3,077 1 0 325.0
2004 Q1 470 0 0 0.0
2003 Q4 3,140 0 0 0.0
2003 Q3 5,037 0 0 0.0
2003 Q2 2,504 0 0 0.0
2003 Q1 40 0 0 0.0
2002 Q4 1,837 0 0 0.0
2002 Q3 3,245 0 0 0.0
2002 Q2 2,661 6 1 2254.8
2002 Q1 122 0 0 0.0
2001 Q4 1,161 0 0 0.0
2001 Q3 2,788 0 0 0.0
2001 Q2 2,149 2 0 930.7
2001 Q1 46 0 0 0.0
2000 Q4 1,775 0 0 0.0
2000 Q3 4,138 0 0 0.0
2000 Q2 4,003 0 0 0.0
2000 Q1 78 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

6 on file

2012 · 1 incident

April 25, 2012 MN · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Strata Corp · Caught in, under or between a moving and a stationary object

Mechanic from shop was dropping the belly pan of a D8 crawler. The pan slipped and pinched his right thumb between the pan and the ground.

2005 · 1 incident

May 10, 2005 MN · Metal/Non-Metal pumper SLIP OR FALL OF PERSON
Strata Corp · Fall to the walkway or working surface

Employee was doing an inspection of a dragline and slipped on some rocks. He fell and sustained a severe strain/sprain to his right foot and ankle.

1997 · 2 incidents

October 10, 1997 MN · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Strata Corp · Struck by flying object

MINER WAS CLEANING OUT AREA NEAR JAW CRUSHER. A ROCK WAS EXPELLED THROUGHT THE GATE WHICH KEPT ROCKS IN THE CRUSHER. ROCK HIT MINER IN HEAD.

October 10, 1997 MN · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Strata Corp · Struck by flying object

CLEANING AREA AROUND JAW CRUSHER. ROCK WAS EXPELLED FROM ROCK TRAP ON CRUXHER AND STRUCK EE ON HEAD.

1990 · 1 incident

May 22, 1990 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Strata Corp · Caught in, under or between a moving and a stationary object

WHILE ASSEMBLING CRUSHER INJ PINCHED FINGERS AS SOCKET LINER WAS PLACED.ONE FINGER CUT,ANOTHER TIP PINCHED OFF.

1989 · 1 incident

June 8, 1989 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Strata Corp · Struck by flying object

VICTIM WAS STRUCK BY A PRY BAR WHICH FLEW FROM A FELLOW EMPLOYEES HANDS WHILE TRYING TO FREE A ROCK THAT WAS LODGED IN A CONVEYOR CHUTE.