PLANT #4 PORTABLE CRUSHER has $7K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at PLANT #4 PORTABLE CRUSHER.
Fatalities
0
Total incidents
17
Years on record
1992–2021
Latest incident
Apr 2021
Compliance record
MSHA citations since 2001
65
citations
7
significant & substantial
$6,684
proposed penalties
$6,684
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 464 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 #4 PORTABLE CRUSHER has $7K 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.
$7K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
65 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-05.
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: 2016-09-13, 9 years ago
0%
of limit-tested samples over the exposure limit
10
samples
5
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz5
Respirable dust, <.1mg5
Show the individual readings (10)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2016-09-13
Respirable dust, <.1mg
0
Crusher Oper/Worker
2016-09-13
Respirable dust, <.1mg
0
Cleanup Man
2016-09-13
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-07-08
Respirable dust, <.1mg
0
Crusher Oper/Worker
2010-07-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2004-06-22
Quartz, respirable, >1% Qtz
0.33
1.16
0.28
Crusher Oper/Worker
2004-06-22
Quartz, respirable, >1% Qtz
0.33
2.37
0.14
Ground Control/Timberman
2004-06-22
Quartz, respirable, >1% Qtz
0.36
1.99
0.18
Front-end Loader Operator
2003-01-15
Quartz, respirable, >1% Qtz
0.5
3.12
0.16
Front-end Loader Operator
2003-01-15
Quartz, respirable, >1% Qtz
0.43
1.84
0.23
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
4
2025
4
2024
5
2023
4
2022
5
2021
4
2020
4
2019
4
2018
5
2017
3
2016
5
2015
5
2014
6
2013
3
2012
4
2011
4
2010
3
2009
3
2008
2
2007
4
2006
5
2005
5
2004
5
2003
5
2002
5
2001
5
2000
5
Source: MSHA quarterly employment and production, updated weekly.
PLANT #4 PORTABLE CRUSHER sits in Dane County, Wisconsin, where the Census mining category is 0.0% 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.
Dane County, Wisconsin · Population 564,777
0.0%
Mining share of county employment
$88,108
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
Wingra Stone Company · Caught in, under or between a moving and a stationary object
miner was attempting to break a stuck boulder on a jaw crusher feed chute using a pry bar. While striking downward EE's RT thumb was crushed between the bar and toe plate of the platform EE was kneeling on.
Wingra Stone Company · Caught in, under or between a moving and a stationary object
Employee was removing/unjamming rocks from a cone crusher. While adjusting the rocks one fell on the tip of EE's right ring finger causing a small laceration and swelling.
2016 · 2 incidents
October 13, 2016WI · Metal/Non-Metalminer, prospector, necOTHER
Employee said right eye was irritated. Employee taken to Davis Duchr eye clinic. Clinic said there was no foreign object in the eye. Eye was flushed and was told to put drops in and it would be fine. Employee does wear contacts which might have scratched the lens.
Employee said right eye was irritated. EE was taken to eye clinic. Clinic said there were no foreign objects in eye. Eye was flushed and EE was told to put drops in and EE would be fine. Employee does wear contacts which might have scratched lens.
2014 · 3 incidents
October 16, 2014WI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
Wingra Stone Company · Caught in, under or between a moving and a stationary object
I.E. was closing door on screen plant and pulled door against middle finger on rt hand.
EE was carrying a tail pulley with another EE. They were putting the tail pulley in back of foreman's pickup truck bed. While putting the tail pulley back in the truck bed, EE slipped on another tail pulley twisting his ankle.
2006 · 1 incident
January 12, 2006WI · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS