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: 974 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Menomonie Plant has $14K 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.
$14K
proposed penalties
$14K
current assessed
$14K
paid to date
$0
outstanding
73 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-01-22.
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: 2025-10-29
0%
of limit-tested samples over the exposure limit
56
samples
10
limit-tested
Most sampled contaminants
Respirable dust, <.1mg40
Quartz, respirable, >1% Qtz13
Unlisted Particulate, respirable, <1% Qtz3
Show the individual readings (56)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-10-29
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2025-10-29
Respirable dust, <.1mg
0
Front-end Loader Operator
2025-01-22
Respirable dust, <.1mg
0
Sampler, Dust
2025-01-22
Respirable dust, <.1mg
0
Mechanic
2023-12-27
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2023-12-27
Respirable dust, <.1mg
0
Front-end Loader Operator
2022-11-01
Respirable dust, <.1mg
0
Sampler, Dust
2022-11-01
Respirable dust, <.1mg
0
Truck Loader
2022-04-07
Quartz, respirable, >1% Qtz
0.16
Scale Man
2022-04-07
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2022-04-07
Respirable dust, <.1mg
0
Mechanic
2021-02-17
Respirable dust, <.1mg
0
Truck Driver
2021-02-17
Quartz, respirable, >1% Qtz
0.14
Dry Screen Plant Operator
2021-02-17
Respirable dust, <.1mg
0
Supervisor, Co. Official
2019-11-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-11-20
Respirable dust, <.1mg
0
Utility Man
2019-11-20
Respirable dust, <.1mg
0
Mechanic
2018-12-12
Quartz, respirable, >1% Qtz
0.13
0.49
0.27
Dry Screen Plant Operator
2018-12-12
Respirable dust, <.1mg
0
Lab Technician
2018-12-12
Quartz, respirable, >1% Qtz
0.63
Mechanic
2018-03-13
Respirable dust, <.1mg
0
Building Repair/Maint.
2018-03-13
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2018-03-13
Respirable dust, <.1mg
0
Front-end Loader Operator
2018-03-13
Quartz, respirable, >1% Qtz
0.22
0.68
0.32
Lab Technician
2016-12-21
Respirable dust, <.1mg
0
Front-end Loader Operator
2016-12-21
Respirable dust, <.1mg
0
Lab Technician
2016-12-21
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2016-12-21
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2016-01-20
Respirable dust, <.1mg
0
Lab Technician
2016-01-20
Respirable dust, <.1mg
0
Mechanic
2016-01-20
Respirable dust, <.1mg
0
Supervisor, Co. Official
2016-01-20
Respirable dust, <.1mg
0
Complete Load-Haul-Dump
2014-12-04
Respirable dust, <.1mg
0
Lab Technician
2014-12-04
Respirable dust, <.1mg
0
Kiln/Dryer Operator
2014-12-04
Respirable dust, <.1mg
0
Supervisor, Co. Official
2014-02-11
Unlisted Particulate, respirable, <1% Qtz
0.77
Laborer, Bullgang
2014-02-11
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2014-02-11
Respirable dust, <.1mg
0
Front-end Loader Operator
2013-07-16
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2013-07-16
Respirable dust, <.1mg
0
Sand Filler (Dry)
2012-08-01
Respirable dust, <.1mg
0
Front-end Loader Operator
2012-08-01
Respirable dust, <.1mg
0
Washer Operator
2012-08-01
Quartz, respirable, >1% Qtz
0.13
0.4
0.33
Dry Screen Plant Operator
2011-03-23
Quartz, respirable, >1% Qtz
0.17
0.8
0.21
Dry Screen Plant Operator
2011-03-23
Quartz, respirable, >1% Qtz
0.13
1.07
0.12
Sampler, Dust
2010-11-30
Quartz, respirable, >1% Qtz
0.14
0.6
0.23
Dry Screen Plant Operator
2010-11-30
Unlisted Particulate, respirable, <1% Qtz
0.15
Mechanic
2010-11-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-11-30
Quartz, respirable, >1% Qtz
0.15
0.4
0.38
Sampler, Dust
2010-03-09
Respirable dust, <.1mg
0
Mechanic
2010-03-09
Quartz, respirable, >1% Qtz
0.15
1.49
0.10
Dry Screen Plant Operator
2009-02-24
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2009-02-24
Unlisted Particulate, respirable, <1% Qtz
0.2
Utility Man
2009-02-24
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2008-10-01
Quartz, respirable, >1% Qtz
0.12
0.59
0.20
Dry Screen Plant Operator
2008-10-01
Quartz, respirable, >1% Qtz
1.7
1.78
0.96
Dry Screen Plant 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.
Menomonie Plant recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘThis rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Wisconsin, metal and nonmetal mining averaged 1.80 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year
total case rate
days-away
fatal
2025 *
0.00
0.00
0.000
2024 *
8.24
0.00
0.000
2023 *
7.47
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
6.99
0.00
0.000
2019 *
6.49
0.00
0.000
2018 *
0.00
0.00
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
12
2025
12
2024
13
2023
13
2022
14
2021
12
2020
12
2019
13
2018
20
2017
16
2016
10
2015
17
2014
29
2013
28
2012
25
2011
25
2010
19
2009
17
2008
16
2007
1
Source: MSHA quarterly employment and production, updated weekly.
Menomonie Plant 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
6,404
0
0
0.0
2026 Q1
5,736
0
0
0.0
2025 Q4
5,348
0
0
0.0
2025 Q3
6,579
0
0
0.0
2025 Q2
6,523
0
0
0.0
2025 Q1
5,751
1
0
173.9
2024 Q4
5,634
0
0
0.0
2024 Q3
6,264
0
0
0.0
Show 67 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
6,321
0
0
0.0
2024 Q1
6,038
0
0
0.0
2023 Q4
5,917
0
0
0.0
2023 Q3
7,019
0
0
0.0
2023 Q2
7,174
0
0
0.0
2023 Q1
6,667
2
2
300.0
2022 Q4
5,980
1
0
167.2
2022 Q3
7,697
0
0
0.0
2022 Q2
7,298
0
0
0.0
2022 Q1
6,382
5
0
783.5
2021 Q4
6,183
2
0
323.5
2021 Q3
7,267
0
0
0.0
2021 Q2
6,766
0
0
0.0
2021 Q1
5,334
3
1
562.4
2020 Q4
6,171
0
0
0.0
2020 Q3
7,225
2
0
276.8
2020 Q2
7,372
1
0
135.6
2020 Q1
7,844
0
0
0.0
2019 Q4
7,687
2
0
260.2
2019 Q3
7,821
0
0
0.0
2019 Q2
7,409
0
0
0.0
2019 Q1
7,906
0
0
0.0
2018 Q4
8,611
0
0
0.0
2018 Q3
11,108
0
0
0.0
2018 Q2
13,802
0
0
0.0
2018 Q1
11,936
1
0
83.8
2017 Q4
11,724
2
1
170.6
2017 Q3
11,448
0
0
0.0
2017 Q2
10,165
0
0
0.0
2017 Q1
6,257
2
0
319.6
2016 Q4
4,063
4
1
984.5
2016 Q3
695
0
0
0.0
2016 Q2
981
0
0
0.0
2016 Q1
5,587
10
3
1789.9
2015 Q4
6,162
0
0
0.0
2015 Q3
8,073
2
1
247.7
2015 Q2
9,359
0
0
0.0
2015 Q1
9,748
0
0
0.0
2014 Q4
14,666
2
0
136.4
2014 Q3
16,403
0
0
0.0
2014 Q2
15,978
5
2
312.9
2014 Q1
14,443
0
0
0.0
2013 Q4
14,416
0
0
0.0
2013 Q3
18,161
2
0
110.1
2013 Q2
14,762
0
0
0.0
2013 Q1
13,226
0
0
0.0
2012 Q4
13,302
1
0
75.2
2012 Q3
14,028
0
0
0.0
2012 Q2
14,579
0
0
0.0
2012 Q1
13,754
0
0
0.0
2011 Q4
13,660
0
0
0.0
2011 Q3
14,167
0
0
0.0
2011 Q2
14,609
0
0
0.0
2011 Q1
11,935
1
0
83.8
2010 Q4
11,843
2
1
168.9
2010 Q3
13,481
0
0
0.0
2010 Q2
12,697
0
0
0.0
2010 Q1
9,534
1
0
104.9
2009 Q4
8,919
1
0
112.1
2009 Q3
9,358
0
0
0.0
2009 Q2
9,486
0
0
0.0
2009 Q1
11,284
0
0
0.0
2008 Q4
13,163
2
1
151.9
2008 Q3
13,706
4
1
291.8
2008 Q2
9,162
0
0
0.0
2008 Q1
1,000
0
0
0.0
2007 Q4
520
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
12 on file
2024 · 1 incident
September 16, 2024WI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
On 9/16/24 at 7:00pm an employee fell while getting off the dozer when re-fueling. When EE caught self from the fall, EE injured right elbow. EE came in to work the next morning at 8:15 and was brought to urgent care by the PM. After X-rays and other checks, it was found that EE had a right radial head fracture.
2023 · 1 incident
June 8, 2023WI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
Covia Solutions Inc. · Caught in, under or between a moving and a stationary object
Injured EE was asked by other EE to assist with equipment install at crusher. In attempting to remove 150lb guard for install, injured EE hand was in line of fire when other EE lowered guard thinking they were out of the way. Injuries: Fracture right ring finger, lacerations to right ring and middle fingers rq. stitches
2020 · 1 incident
January 2, 2020WI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Employee was repairing a drive belt, and attempting to loosen a nut, using a crescent wrench. While employee was applying pressure to loosen the nut, employee felt a pain in right shoulder.
2014 · 1 incident
May 20, 2014WI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
Associate was climbing down the extension ladder when the associate missed the second step from the bottom straining the right hip.
2010 · 2 incidents
December 6, 2010WI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Dumping small lab hopper and associate hit the frozen sand with hand to free material. The frozen sand came out and the hopper weight shifted and hopper lid stuck right hand index finger, peeling skin back. Taken to urgent care and received 5 stitches.
September 18, 2010WI · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
Two associates were rotating a steel frame. The frame was pulled to the edge of the work bench and one of the associates reached to grab the frame when it fell to the ground. His small left finger was pinched between steel frame and table top resulting in a fracture.
2009 · 4 incidents
December 9, 2009WI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
Employee was holding a piece of steel with his hand when cutting with the band saw. Broken teeth on saw grabbed the steel, forcing steel forward and pinching of finger between steel being cut and steel laying next to band saw. Wrapped finger and received stitches at urgent care clinic. Vice not used to secure steel while cutting and hands should have been kept clear.
September 22, 2009WI · Metal/Non-Metalclerk, timekeeper, office worker, director of salesOTHER
Employee tried to kick a frozen chuck of sand loose. Kicked the ice and felt a pain in his back.
February 17, 2009WI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS