Mining Incidents

Northwestern Stone LLC Metal/Non-Metal

Middleton, Dane County, WI  ·  Intermittent
MSHA Mine ID: 4700281

Northwestern Stone LLC has $1K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2000
14
citations
3
significant & substantial
$1,478
proposed penalties
$1,478
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
32
inspections on record
338
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: 338 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Northwestern Stone LLC has $1K 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
14 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-07-20.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 255 0 0 0.0
2025 Q3 146 0 0 0.0
2025 Q2 303 0 0 0.0
2025 Q1 130 0 0 0.0
2024 Q4 410 0 0 0.0
2024 Q3 170 0 0 0.0
2024 Q2 246 0 0 0.0
2024 Q1 0 0 0
Show 85 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 463 0 0 0.0
2023 Q3 408 1 0 2451.0
2023 Q2 470 0 0 0.0
2023 Q1 0 0 0
2022 Q4 286 0 0 0.0
2022 Q3 270 0 0 0.0
2022 Q2 554 0 0 0.0
2022 Q1 104 0 0 0.0
2021 Q4 560 0 0 0.0
2021 Q3 400 0 0 0.0
2021 Q2 338 0 0 0.0
2021 Q1 0 0 0
2020 Q4 221 1 0 4524.9
2020 Q3 342 0 0 0.0
2020 Q2 479 1 0 2087.7
2020 Q1 95 0 0 0.0
2019 Q4 120 0 0 0.0
2019 Q3 460 0 0 0.0
2019 Q2 184 0 0 0.0
2019 Q1 0 0 0
2018 Q4 253 0 0 0.0
2018 Q3 108 0 0 0.0
2018 Q2 0 0 0
2018 Q1 0 0 0
2017 Q4 336 0 0 0.0
2017 Q3 115 0 0 0.0
2017 Q2 78 0 0 0.0
2017 Q1 0 0 0
2016 Q4 96 0 0 0.0
2016 Q3 0 0 0
2016 Q2 689 0 0 0.0
2016 Q1 235 0 0 0.0
2015 Q4 161 2 2 12422.4
2015 Q3 168 0 0 0.0
2015 Q2 100 0 0 0.0
2015 Q1 0 0 0
2014 Q4 156 0 0 0.0
2014 Q3 315 0 0 0.0
2014 Q2 84 0 0 0.0
2014 Q1 0 0 0
2013 Q4 88 0 0 0.0
2013 Q3 96 0 0 0.0
2010 Q3 0 0 0
2010 Q2 0 0 0
2010 Q1 259 0 0 0.0
2009 Q4 2,571 0 0 0.0
2009 Q3 593 1 0 1686.3
2009 Q2 554 0 0 0.0
2009 Q1 100 0 0 0.0
2008 Q4 0 0 0
2008 Q3 157 0 0 0.0
2008 Q2 60 0 0 0.0
2008 Q1 0 0 0
2007 Q4 108 0 0 0.0
2007 Q3 282 0 0 0.0
2007 Q2 164 0 0 0.0
2007 Q1 36 0 0 0.0
2006 Q4 150 0 0 0.0
2006 Q3 24 0 0 0.0
2006 Q2 0 0 0
2006 Q1 59 1 0 16949.2
2005 Q4 2,334 0 0 0.0
2005 Q3 2,346 0 0 0.0
2005 Q2 3,269 0 0 0.0
2005 Q1 2,422 0 0 0.0
2004 Q4 3,360 0 0 0.0
2004 Q3 3,800 0 0 0.0
2004 Q2 3,552 0 0 0.0
2004 Q1 3,286 0 0 0.0
2003 Q4 3,558 0 0 0.0
2003 Q3 3,662 0 0 0.0
2003 Q2 3,161 0 0 0.0
2003 Q1 2,484 0 0 0.0
2002 Q4 2,907 4 0 1376.0
2002 Q3 3,091 0 0 0.0
2002 Q2 2,791 0 0 0.0
2002 Q1 4,773 2 0 419.0
2001 Q4 3,246 0 0 0.0
2001 Q3 3,665 0 0 0.0
2001 Q2 2,854 0 0 0.0
2001 Q1 2,849 0 0 0.0
2000 Q4 3,145 0 0 0.0
2000 Q3 3,695 1 1 270.6
2000 Q2 2,709 0 0 0.0
2000 Q1 1,961 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.

For insurers, brokers, and safety consultants

The full compliance file on Northwestern Stone LLC

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.