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Plant #55: 12 MSHA citations Metal/Non-Metal

Zumbro Fall, Jackson County, MN  ·  Intermittent
MSHA Mine ID: 4703194

Plant #55 has $1K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
2015
Latest incident
Apr 2015
Compliance record
MSHA citations since 2002
12
citations
0
significant & substantial
$1,486
proposed penalties
$1,486
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Milestone Materials Div/Mathy Construction's full MSHA compliance history →
Inspection activity
MSHA inspections since 2002
30
inspections on record
254
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: 254 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Plant #55 has $1K in proposed MSHA penalties and $0 outstanding across 2 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
12 assessments are final orders; 2 contested dockets.
Of $475 in penalties contested before the Commission, $250 was upheld in final decisions.
As of the most recent assessment on 2025-07-24.
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.
0.0%
significant & substantial
0.0%
high negligence or reckless
0.0%
reasonably likely or greater
41.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 25.0% low, 75.0% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘ Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
4 citations taken to the federal commission · 33% of citations on record
  • Settled 2 · 50%
  • Vacated or withdrawn 2 · 50%
47%
Penalty reduction in decided contests
$475 proposed, $250 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2021-10-12.
Contested penalties
ⓘ A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
LAKE 2022-0006 Settlement Paez 2022 $375 → $250
LAKE 2012-50M Withdrawal Zielinski 2012 $100 → $0
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2026-04-23
4
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
Show the individual readings (4)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-04-23 Respirable dust, <.1mg 0 Pump, Slurry Mix Operator
2025-07-24 Respirable dust, <.1mg 0 Crusher Oper/Worker
2021-07-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-06-27 Respirable dust, <.1mg 0 Washer 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. Milestone Materials Div/Mathy Construction 1999 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 1
2023 1
2022 1
2021 1
2020 1
2019 1
2018 1
2017 2
2016 1
2015 1
2014 1
2013 2
2012 2
2011 2
2010 1
2009 1
2008 1
2007 1
2006 1
2005 1
2004 2
2003 1
2002 1
2001 1
2000 1
Source: MSHA quarterly employment and production, updated weekly.

Plant #55 sits in Jackson County, Minnesota, where the Census mining category is 0.2% 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.
Jackson County, Minnesota · Population 9,964
0.2%
Mining share of county employment
$69,955
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 1,157 0 0 0.0
2026 Q1 1 0 0 0.0
2025 Q4 539 0 0 0.0
2025 Q3 1,151 2 0 1737.6
2025 Q2 1,490 0 0 0.0
2025 Q1 1 0 0 0.0
2024 Q4 219 0 0 0.0
2024 Q3 984 0 0 0.0
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 581 0 0 0.0
2024 Q1 1 0 0 0.0
2023 Q4 67 0 0 0.0
2023 Q3 773 0 0 0.0
2023 Q2 749 0 0 0.0
2023 Q1 385 3 0 7792.2
2022 Q4 1 0 0 0.0
2022 Q3 506 0 0 0.0
2022 Q2 1,565 0 0 0.0
2022 Q1 88 0 0 0.0
2021 Q4 581 2 0 3442.3
2021 Q3 1,489 2 0 1343.2
2021 Q2 888 0 0 0.0
2021 Q1 1 0 0 0.0
2020 Q4 1 0 0 0.0
2020 Q3 870 0 0 0.0
2020 Q2 608 0 0 0.0
2020 Q1 1 0 0 0.0
2019 Q4 1 0 0 0.0
2019 Q3 1,670 0 0 0.0
2019 Q2 742 0 0 0.0
2019 Q1 1 0 0 0.0
2018 Q4 1 0 0 0.0
2018 Q3 0 0 0
2018 Q2 949 0 0 0.0
2018 Q1 1 0 0 0.0
2017 Q4 152 0 0 0.0
2017 Q3 1,305 0 0 0.0
2017 Q2 1,234 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 729 0 0 0.0
2016 Q3 375 0 0 0.0
2016 Q2 1 0 0 0.0
2016 Q1 1 0 0 0.0
2015 Q4 1 0 0 0.0
2015 Q3 776 0 0 0.0
2015 Q2 38 0 0 0.0
2015 Q1 1 0 0 0.0
2014 Q4 326 0 0 0.0
2014 Q3 1 0 0 0.0
2014 Q2 1,508 1 0 663.1
2014 Q1 1 0 0 0.0
2013 Q4 436 0 0 0.0
2013 Q3 1,178 0 0 0.0
2013 Q2 1,324 0 0 0.0
2013 Q1 1 0 0 0.0
2012 Q4 1 0 0 0.0
2012 Q3 2,263 0 0 0.0
2012 Q2 822 1 0 1216.5
2012 Q1 11 0 0 0.0
2011 Q4 289 0 0 0.0
2011 Q3 1,357 0 0 0.0
2011 Q2 1,288 0 0 0.0
2011 Q1 80 0 0 0.0
2010 Q4 841 0 0 0.0
2010 Q3 1,209 0 0 0.0
2010 Q2 73 0 0 0.0
2010 Q1 1 0 0 0.0
2009 Q4 1 0 0 0.0
2009 Q3 1 0 0 0.0
2009 Q2 896 0 0 0.0
2009 Q1 128 0 0 0.0
2008 Q4 1,014 0 0 0.0
2008 Q3 240 0 0 0.0
2008 Q2 1 0 0 0.0
2008 Q1 1 0 0 0.0
2007 Q4 740 0 0 0.0
2007 Q3 924 0 0 0.0
2007 Q2 1 0 0 0.0
2007 Q1 1 0 0 0.0
2006 Q4 391 0 0 0.0
2006 Q3 1 0 0 0.0
2006 Q2 817 0 0 0.0
2006 Q1 1 0 0 0.0
2005 Q4 843 0 0 0.0
2005 Q3 328 0 0 0.0
2005 Q2 1 0 0 0.0
2005 Q1 1 0 0 0.0
2004 Q4 1 0 0 0.0
2004 Q3 1 0 0 0.0
2004 Q2 2,233 0 0 0.0
2004 Q1 1 0 0 0.0
2003 Q4 1,561 0 0 0.0
2003 Q3 573 0 0 0.0
2003 Q2 12 0 0 0.0
2003 Q1 0 0 0
2002 Q4 209 0 0 0.0
2002 Q3 1,892 0 0 0.0
2002 Q2 934 0 0 0.0
2002 Q1 1 0 0 0.0
2001 Q4 824 0 0 0.0
2001 Q2 264 0 0 0.0
2001 Q1 0 0 0
2000 Q4 0 0 0
2000 Q3 1 0 0 0.0
2000 Q2 1 0 0 0.0
2000 Q1 1 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2015 · 1 incident

April 21, 2015 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Milestone Materials Div/Mathy Construction · Over-exertion (Not Elsewhere Classified)

Climbing rear steps of loader to add antifreeze to radiator. Twisted right knee while climbing steps. Operator felt that he only had a minor strain.