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: 203 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 #88 has $826 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.
$826
proposed penalties
$826
current assessed
$826
paid to date
$0
outstanding
10 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2021-06-01.
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.
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: 2026-04-23
0%
of limit-tested samples over the exposure limit
9
samples
3
limit-tested
Most sampled contaminants
Respirable dust, <.1mg5
Nuisance dust, total, <1% Qtz3
Quartz, respirable, >1% Qtz1
Show the individual readings (9)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-04-23
Respirable dust, <.1mg
0
Dredge/Barge Operator
2025-07-24
Respirable dust, <.1mg
0
Dredge/Barge Operator
2021-06-02
Respirable dust, <.1mg
0
Bulldozer Operator
2021-06-02
Respirable dust, <.1mg
0
Dredge/Barge Operator
2018-05-08
Quartz, respirable, >1% Qtz
0.2
Washer Operator
2000-11-01
Nuisance dust, total, <1% Qtz
0.24
10
0.02
Backhoe Operator
2000-11-01
Nuisance dust, total, <1% Qtz
0.16
10
0.02
Front-end Loader Operator
2000-11-01
Respirable dust, <.1mg
0
Front-end Loader Operator
2000-11-01
Nuisance dust, total, <1% Qtz
2.18
10
0.22
Supervisor, Co. Official
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
1
2025
1
2024
2
2023
2
2022
2
2021
2
2020
1
2019
1
2018
2
2017
2
2016
2
2015
2
2014
2
2013
1
2012
1
2010
1
2009
1
2008
1
2007
1
2006
1
2005
1
2004
2
2003
1
2002
1
2001
2
2000
1
Source: MSHA quarterly employment and production, updated weekly.
Plant #88 sits in Dunn County, Wisconsin, 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.
Dunn County, Wisconsin · Population 45,349
0.1%
Mining share of county employment
$71,785
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
848
0
0
0.0
2026 Q1
1
0
0
0.0
2025 Q4
605
0
0
0.0
2025 Q3
816
0
0
0.0
2025 Q2
1,681
0
0
0.0
2025 Q1
136
0
0
0.0
2024 Q4
1,251
0
0
0.0
2024 Q3
2,264
0
0
0.0
Show 89 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
1,236
0
0
0.0
2024 Q1
1
0
0
0.0
2023 Q4
794
0
0
0.0
2023 Q3
2,129
0
0
0.0
2023 Q2
640
0
0
0.0
2023 Q1
1
0
0
0.0
2022 Q4
407
0
0
0.0
2022 Q3
1,272
0
0
0.0
2022 Q2
1,446
0
0
0.0
2022 Q1
1
0
0
0.0
2021 Q4
1
0
0
0.0
2021 Q3
2,197
0
0
0.0
2021 Q2
847
1
0
1180.6
2021 Q1
1
0
0
0.0
2020 Q4
1
0
0
0.0
2020 Q3
1,154
0
0
0.0
2020 Q2
883
0
0
0.0
2020 Q1
1
0
0
0.0
2019 Q4
1
0
0
0.0
2019 Q3
1,166
0
0
0.0
2019 Q2
1,053
0
0
0.0
2019 Q1
1
0
0
0.0
2018 Q4
524
0
0
0.0
2018 Q3
2,028
0
0
0.0
2018 Q2
1,213
1
0
824.4
2018 Q1
1
0
0
0.0
2017 Q4
677
0
0
0.0
2017 Q3
1,392
0
0
0.0
2017 Q2
1,970
0
0
0.0
2017 Q1
1
0
0
0.0
2016 Q4
1,900
0
0
0.0
2016 Q3
2,086
0
0
0.0
2016 Q2
1,349
0
0
0.0
2016 Q1
1
0
0
0.0
2015 Q4
1,681
2
0
1189.8
2015 Q3
1,883
0
0
0.0
2015 Q2
2,437
0
0
0.0
2015 Q1
256
0
0
0.0
2014 Q4
767
0
0
0.0
2014 Q3
3,030
0
0
0.0
2014 Q2
1,395
0
0
0.0
2014 Q1
1
0
0
0.0
2013 Q4
845
0
0
0.0
2013 Q3
1,215
0
0
0.0
2013 Q2
1,047
0
0
0.0
2013 Q1
1
0
0
0.0
2012 Q4
794
0
0
0.0
2010 Q2
1
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
1
0
0
0.0
2009 Q1
1
0
0
0.0
2008 Q4
1
0
0
0.0
2008 Q3
1
0
0
0.0
2008 Q2
1
0
0
0.0
2008 Q1
1
0
0
0.0
2007 Q4
19
0
0
0.0
2007 Q3
1
0
0
0.0
2007 Q2
1
0
0
0.0
2007 Q1
1
0
0
0.0
2006 Q4
1
0
0
0.0
2006 Q3
5
1
0
200000.0
2006 Q2
1
0
0
0.0
2006 Q1
1
0
0
0.0
2005 Q4
1
0
0
0.0
2005 Q3
1
0
0
0.0
2005 Q2
1
0
0
0.0
2005 Q1
1
0
0
0.0
2004 Q4
780
0
0
0.0
2004 Q3
3,589
0
0
0.0
2004 Q2
775
0
0
0.0
2004 Q1
1
0
0
0.0
2003 Q4
729
0
0
0.0
2003 Q3
590
5
1
8474.6
2003 Q2
2,266
0
0
0.0
2003 Q1
0
0
0
2002 Q4
161
0
0
0.0
2002 Q3
250
0
0
0.0
2002 Q2
212
0
0
0.0
2002 Q1
26
0
0
0.0
2001 Q4
742
0
0
0.0
2001 Q3
3,407
0
0
0.0
2001 Q2
278
0
0
0.0
2001 Q1
0
0
0
2000 Q4
869
0
0
0.0
2000 Q3
99
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
5 on file
2014 · 1 incident
September 10, 2014WI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDTOOLS (NONPOWERED)
WHILE EXTENDING THE LENGTH AND HOLDING THE DISCHARGE PIPE, WHILE ANOTHER EE BANDED IT. THAT EVENING EE FELT PAIN IN HIS LEFT SIDE. HE SOUGHT MEDICAL TREATMENT ON 9-26-02.
2001 · 1 incident
August 22, 2001WI · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)