Bjoin Limestone Inc · Fall to the walkway or working surface
Employee claims they slipped and lost footing and fell and hit their head on the ground.
Portable Unit #1 Metal/Non-Metal
Bjoin Limestone Inc
· Surface
Controlled by
Kristopher P Bjoin; Shaun M Bjoin; Jonathan M Bjoin
Janesville,
Rock County,
WI
·
Active
MSHA Mine ID: 4701111
Portable Unit #1 has $17K in proposed MSHA penalties and $302 outstanding across 5 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 3
- Years on record
- 2007–2025
- Latest incident
- May 2025
Compliance record
MSHA citations since 2001
136
citations
31
significant & substantial
$17,458
proposed penalties
$15,902
paid to date
91% of proposed penalties paid to date, a $1,556 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
63
inspections on record
970
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: 970 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 #1 has $17K in proposed MSHA penalties and $302 outstanding across 5 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.$17K
proposed penalties
$16K
current assessed
$16K
paid to date
$302
outstanding
136 assessments are final orders; 5 contested dockets.
As of the most recent assessment on 2026-02-26.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
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 |
|---|---|---|---|---|
| 2025 Q4 | 2,699 | 0 | 0 | 0.0 |
| 2025 Q3 | 3,601 | 0 | 0 | 0.0 |
| 2025 Q2 | 3,632 | 2 | 0 | 550.7 |
| 2025 Q1 | 2,754 | 0 | 0 | 0.0 |
| 2024 Q4 | 3,023 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,549 | 0 | 0 | 0.0 |
| 2024 Q2 | 3,302 | 1 | 0 | 302.8 |
| 2024 Q1 | 2,885 | 0 | 0 | 0.0 |
Show 95 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 4,330 | 0 | 0 | 0.0 |
| 2023 Q3 | 2,723 | 0 | 0 | 0.0 |
| 2023 Q2 | 3,621 | 2 | 0 | 552.3 |
| 2023 Q1 | 2,481 | 0 | 0 | 0.0 |
| 2022 Q4 | 3,048 | 0 | 0 | 0.0 |
| 2022 Q3 | 4,617 | 0 | 0 | 0.0 |
| 2022 Q2 | 3,283 | 1 | 0 | 304.6 |
| 2022 Q1 | 2,331 | 0 | 0 | 0.0 |
| 2021 Q4 | 1,738 | 0 | 0 | 0.0 |
| 2021 Q3 | 725 | 0 | 0 | 0.0 |
| 2021 Q2 | 3,192 | 1 | 0 | 313.3 |
| 2021 Q1 | 2,364 | 3 | 1 | 1269.0 |
| 2020 Q4 | 2,877 | 0 | 0 | 0.0 |
| 2020 Q3 | 3,205 | 0 | 0 | 0.0 |
| 2020 Q2 | 3,495 | 0 | 0 | 0.0 |
| 2020 Q1 | 3,204 | 0 | 0 | 0.0 |
| 2019 Q4 | 2,528 | 0 | 0 | 0.0 |
| 2019 Q3 | 3,284 | 2 | 0 | 609.0 |
| 2019 Q2 | 3,279 | 0 | 0 | 0.0 |
| 2019 Q1 | 2,932 | 0 | 0 | 0.0 |
| 2018 Q4 | 2,872 | 0 | 0 | 0.0 |
| 2018 Q3 | 3,437 | 0 | 0 | 0.0 |
| 2018 Q2 | 3,313 | 2 | 0 | 603.7 |
| 2018 Q1 | 2,483 | 0 | 0 | 0.0 |
| 2017 Q4 | 2,984 | 0 | 0 | 0.0 |
| 2017 Q3 | 3,688 | 0 | 0 | 0.0 |
| 2017 Q2 | 3,257 | 7 | 3 | 2149.2 |
| 2017 Q1 | 1,849 | 0 | 0 | 0.0 |
| 2016 Q4 | 2,936 | 0 | 0 | 0.0 |
| 2016 Q3 | 3,249 | 0 | 0 | 0.0 |
| 2016 Q2 | 4,023 | 0 | 0 | 0.0 |
| 2016 Q1 | 3,099 | 0 | 0 | 0.0 |
| 2015 Q4 | 2,894 | 2 | 0 | 691.1 |
| 2015 Q3 | 3,398 | 13 | 6 | 3825.8 |
| 2015 Q2 | 3,339 | 4 | 0 | 1198.0 |
| 2015 Q1 | 2,536 | 0 | 0 | 0.0 |
| 2014 Q4 | 3,777 | 0 | 0 | 0.0 |
| 2014 Q3 | 4,279 | 0 | 0 | 0.0 |
| 2014 Q2 | 6,081 | 0 | 0 | 0.0 |
| 2014 Q1 | 2,548 | 0 | 0 | 0.0 |
| 2013 Q4 | 4,420 | 0 | 0 | 0.0 |
| 2013 Q3 | 4,859 | 2 | 0 | 411.6 |
| 2013 Q2 | 5,484 | 5 | 3 | 911.7 |
| 2013 Q1 | 3,922 | 3 | 1 | 764.9 |
| 2012 Q4 | 3,408 | 0 | 0 | 0.0 |
| 2012 Q3 | 4,454 | 0 | 0 | 0.0 |
| 2012 Q2 | 6,783 | 2 | 1 | 294.9 |
| 2012 Q1 | 5,557 | 2 | 1 | 359.9 |
| 2011 Q4 | 5,400 | 0 | 0 | 0.0 |
| 2011 Q3 | 4,787 | 0 | 0 | 0.0 |
| 2011 Q2 | 5,067 | 0 | 0 | 0.0 |
| 2011 Q1 | 1,856 | 4 | 2 | 2155.2 |
| 2010 Q4 | 4,045 | 0 | 0 | 0.0 |
| 2010 Q3 | 3,638 | 0 | 0 | 0.0 |
| 2010 Q2 | 5,573 | 0 | 0 | 0.0 |
| 2010 Q1 | 4,070 | 0 | 0 | 0.0 |
| 2009 Q4 | 3,624 | 3 | 3 | 827.8 |
| 2009 Q3 | 4,061 | 0 | 0 | 0.0 |
| 2009 Q2 | 3,179 | 4 | 0 | 1258.3 |
| 2009 Q1 | 2,611 | 0 | 0 | 0.0 |
| 2008 Q4 | 3,409 | 0 | 0 | 0.0 |
| 2008 Q3 | 2,060 | 0 | 0 | 0.0 |
| 2008 Q2 | 5,107 | 0 | 0 | 0.0 |
| 2008 Q1 | 2,338 | 6 | 1 | 2566.3 |
| 2007 Q4 | 2,257 | 0 | 0 | 0.0 |
| 2007 Q3 | 1,491 | 0 | 0 | 0.0 |
| 2007 Q2 | 3,727 | 5 | 3 | 1341.6 |
| 2007 Q1 | 1,853 | 1 | 0 | 539.7 |
| 2006 Q4 | 3,622 | 0 | 0 | 0.0 |
| 2006 Q3 | 3,724 | 0 | 0 | 0.0 |
| 2006 Q2 | 3,069 | 1 | 0 | 325.8 |
| 2006 Q1 | 2,832 | 6 | 0 | 2118.6 |
| 2005 Q4 | 3,618 | 0 | 0 | 0.0 |
| 2005 Q3 | 3,291 | 0 | 0 | 0.0 |
| 2005 Q2 | 3,400 | 0 | 0 | 0.0 |
| 2005 Q1 | 1,978 | 0 | 0 | 0.0 |
| 2004 Q4 | 2,384 | 2 | 0 | 838.9 |
| 2004 Q3 | 2,931 | 3 | 0 | 1023.5 |
| 2004 Q2 | 3,906 | 0 | 0 | 0.0 |
| 2004 Q1 | 4,433 | 0 | 0 | 0.0 |
| 2003 Q4 | 2,269 | 8 | 1 | 3525.8 |
| 2003 Q3 | 2,471 | 4 | 2 | 1618.8 |
| 2003 Q2 | 2,277 | 0 | 0 | 0.0 |
| 2003 Q1 | 1,955 | 3 | 0 | 1534.5 |
| 2002 Q4 | 2,163 | 0 | 0 | 0.0 |
| 2002 Q3 | 4,627 | 3 | 1 | 648.4 |
| 2002 Q2 | 2,627 | 0 | 0 | 0.0 |
| 2002 Q1 | 1,957 | 11 | 1 | 5620.8 |
| 2001 Q4 | 3,034 | 0 | 0 | 0.0 |
| 2001 Q3 | 2,595 | 0 | 0 | 0.0 |
| 2001 Q2 | 4,077 | 16 | 1 | 3924.5 |
| 2001 Q1 | 800 | 0 | 0 | 0.0 |
| 2000 Q4 | 5,002 | 0 | 0 | 0.0 |
| 2000 Q3 | 5,439 | 0 | 0 | 0.0 |
| 2000 Q2 | 2,570 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
3 on file2025 · 1 incident
2023 · 1 incident
May 10, 2023
WI · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
POWERED HAULAGE
Bjoin Limestone Inc · Struck by falling object
Setting up the plant, operator of end loader had placed the conveyor hopper on blocks. They backed up and the chain hook caught the conveyor/hopper and dropped on injured employee's foot. EE had steeled toe boots on and got no broken bones, but the toes were pretty squashed. EE had stitches and developed compartment syndrome in their calf.
2007 · 1 incident
June 15, 2007
WI · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
POWERED HAULAGE
Bjoin Limestone Inc · Caught in, under or between running or meshing objects
Troughing rollers had stopped. Employee pounded with a hammer and hammer got caught.
For insurers, brokers, and safety consultants
The full compliance file on Portable Unit #1
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.