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: 32 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Portable Unit No. 1 has $275 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.
$275
proposed penalties
$275
current assessed
$275
paid to date
$0
outstanding
5 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-07-11.
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 controller and operator history, updated weekly.
Workforce and production
Year
Employees
2004
0
2003
0
2002
0
2001
2
2000
2
1999
3
1998
3
1997
3
1996
2
1995
3
1994
2
1993
3
1992
3
1991
3
1990
3
1989
6
1988
10
1987
9
1986
12
1985
25
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
Portable Unit No. 1 sits in Iowa County, Wisconsin, where the Census mining category is 0.6% 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.
Iowa County, Wisconsin · Population 23,832
0.6%
Mining share of county employment
$83,372
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; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. 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
2004 Q3
0
0
0
2004 Q2
0
0
0
2004 Q1
0
0
0
2003 Q4
0
0
0
2003 Q3
3
0
0
0.0
2003 Q2
0
0
0
2003 Q1
0
0
0
2002 Q4
0
0
0
Show 11 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2002 Q3
0
0
0
2002 Q2
0
0
0
2002 Q1
0
0
0
2001 Q4
457
0
0
0.0
2001 Q3
1,018
5
0
4911.6
2001 Q2
1,044
0
0
0.0
2001 Q1
0
0
0
2000 Q4
99
0
0
0.0
2000 Q3
1,266
0
0
0.0
2000 Q2
1,115
0
0
0.0
2000 Q1
0
0
0
No fatalities recorded at this mine.
Reportable incidents
3 on file
1988 · 2 incidents
September 16, 1988WI · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorPOWERED HAULAGE