Mining Incidents

MN Portable Wash 086 (A5567 Wash Plant): 1 recorded fatality Metal/Non-Metal

Mendota Heights, Mille Lacs County, MN  ·  Intermittent
MSHA Mine ID: 2103205

MN Portable Wash 086 (A5567 Wash Plant) has $6K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
1
Total incidents
1
Years on record
2023
Latest incident
Aug 2023
Compliance record
MSHA citations since 2001
28
citations
5
significant & substantial
$6,375
proposed penalties
$6,375
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
34
inspections on record
545
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: 545 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

MN Portable Wash 086 (A5567 Wash Plant) has $6K 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
27 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-07-01.
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.
18.5%
significant & substantial
0.0%
high negligence or reckless
18.5%
reasonably likely or greater
40.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 7.4% low, 92.6% moderate, 0.0% 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: 2021-04-21, 5 years ago
0%
of limit-tested samples over the exposure limit
7
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg5
  • Quartz, respirable, >1% Qtz2
Show the individual readings (7)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-04-21 Quartz, respirable, >1% Qtz 0.14 Washer Operator
2016-10-26 Respirable dust, <.1mg 0 Front-end Loader Operator
2016-10-26 Respirable dust, <.1mg 0 Supervisor, Co. Official
2014-05-20 Respirable dust, <.1mg 0 Washer Operator
2014-05-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-06-10 Quartz, respirable, >1% Qtz 0.31 1.42 0.22 Front-end Loader Operator
2009-06-10 Respirable dust, <.1mg 0 Front-end Loader Operator
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. Cemstone Products Company 1999 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 3
2024 3
2023 3
2022 3
2021 3
2020 4
2019 3
2018 3
2017 3
2016 3
2015 3
2014 2
2013 3
2012 3
2011 3
2010 3
2009 3
2008 3
2007 3
2006 3
2005 4
2004 3
2003 3
2002 2
2001 3
2000 3
Source: MSHA quarterly employment and production, updated weekly.

MN Portable Wash 086 (A5567 Wash Plant) sits in Mille Lacs 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.
Mille Lacs County, Minnesota · Population 26,912
0.1%
Mining share of county employment
$71,455
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 2,042 0 0 0.0
2026 Q1 8 0 0 0.0
2025 Q4 493 0 0 0.0
2025 Q3 1,576 0 0 0.0
2025 Q2 1,340 0 0 0.0
2025 Q1 8 0 0 0.0
2024 Q4 980 0 0 0.0
2024 Q3 942 2 2 2123.1
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,246 0 0 0.0
2024 Q1 523 0 0 0.0
2023 Q4 8 0 0 0.0
2023 Q3 1,340 1 0 746.3
2023 Q2 1,007 0 0 0.0
2023 Q1 24 0 0 0.0
2022 Q4 168 0 0 0.0
2022 Q3 1,045 1 0 956.9
2022 Q2 939 0 0 0.0
2022 Q1 24 0 0 0.0
2021 Q4 1,075 0 0 0.0
2021 Q3 623 0 0 0.0
2021 Q2 1,087 0 0 0.0
2021 Q1 24 0 0 0.0
2020 Q4 627 0 0 0.0
2020 Q3 851 1 0 1175.1
2020 Q2 709 0 0 0.0
2020 Q1 40 0 0 0.0
2019 Q4 639 1 0 1564.9
2019 Q3 602 0 0 0.0
2019 Q2 576 0 0 0.0
2019 Q1 20 0 0 0.0
2018 Q4 835 0 0 0.0
2018 Q3 1,319 0 0 0.0
2018 Q2 1,165 1 0 858.4
2018 Q1 78 0 0 0.0
2017 Q4 884 0 0 0.0
2017 Q3 1,367 0 0 0.0
2017 Q2 1,359 0 0 0.0
2017 Q1 230 0 0 0.0
2016 Q4 665 0 0 0.0
2016 Q3 1,285 0 0 0.0
2016 Q2 892 0 0 0.0
2016 Q1 16 0 0 0.0
2015 Q4 788 0 0 0.0
2015 Q3 1,287 0 0 0.0
2015 Q2 16 0 0 0.0
2015 Q1 16 0 0 0.0
2014 Q4 412 0 0 0.0
2014 Q3 630 0 0 0.0
2014 Q2 445 0 0 0.0
2014 Q1 16 0 0 0.0
2013 Q4 688 0 0 0.0
2013 Q3 1,252 1 0 798.7
2013 Q2 690 0 0 0.0
2013 Q1 16 0 0 0.0
2012 Q4 716 0 0 0.0
2012 Q3 1,470 0 0 0.0
2012 Q2 1,298 0 0 0.0
2012 Q1 61 0 0 0.0
2011 Q4 814 0 0 0.0
2011 Q3 1,534 0 0 0.0
2011 Q2 619 0 0 0.0
2011 Q1 16 0 0 0.0
2010 Q4 726 0 0 0.0
2010 Q3 1,293 0 0 0.0
2010 Q2 1,029 0 0 0.0
2010 Q1 48 0 0 0.0
2009 Q4 251 0 0 0.0
2009 Q3 1,375 0 0 0.0
2009 Q2 1,173 4 1 3410.1
2009 Q1 60 0 0 0.0
2008 Q4 750 0 0 0.0
2008 Q2 782 4 1 5115.1
2008 Q1 58 0 0 0.0
2007 Q4 1,329 0 0 0.0
2007 Q3 1,880 0 0 0.0
2007 Q2 1,284 0 0 0.0
2007 Q1 100 0 0 0.0
2006 Q4 346 1 0 2890.2
2006 Q3 3,099 0 0 0.0
2006 Q2 1,096 0 0 0.0
2006 Q1 1,610 0 0 0.0
2005 Q4 1,183 0 0 0.0
2005 Q3 3,062 0 0 0.0
2005 Q2 1,110 1 0 900.9
2005 Q1 24 0 0 0.0
2004 Q4 872 0 0 0.0
2004 Q3 1,265 0 0 0.0
2004 Q2 1,261 0 0 0.0
2004 Q1 62 0 0 0.0
2003 Q4 692 2 0 2890.2
2003 Q3 1,341 0 0 0.0
2003 Q2 1,328 0 0 0.0
2003 Q1 9 0 0 0.0
2002 Q4 436 0 0 0.0
2002 Q3 855 0 0 0.0
2002 Q2 516 0 0 0.0
2002 Q1 17 0 0 0.0
2001 Q4 582 0 0 0.0
2001 Q3 925 8 1 8648.6
2001 Q2 955 0 0 0.0
2001 Q1 513 0 0 0.0
2000 Q4 889 0 0 0.0
2000 Q3 1,016 0 0 0.0
2000 Q2 347 0 0 0.0
2000 Q1 43 0 0 0.0

Fatalities at this mine

1 recorded
August 24, 2023 MN · Metal/Non-Metal outside foreman, leadman Fatality · MACHINERY
Cemstone Products Company · Caught in, under or between a moving and a stationary object

While attempting to lower feed box on wash plant employee was trapped between feed box and hand railing causing fatal injuries to employee.