Mining Incidents

William Coon & Son, Inc Metal/Non-Metal

Preston, New London County, CT  ·  Intermittent
MSHA Mine ID: 0600737

William Coon & Son, Inc has $21K in proposed MSHA penalties and $0 outstanding across 1 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 2007
97
citations
20
significant & substantial
$20,687
proposed penalties
$19,544
paid to date
94% of proposed penalties paid to date, a $1,143 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2007
25
inspections on record
326
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: 326 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

William Coon & Son, Inc has $21K in proposed MSHA penalties and $0 outstanding across 1 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.
$21K
proposed penalties
$20K
current assessed
$20K
paid to date
$0
outstanding
96 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2026-03-17.
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 268 0 0 0.0
2025 Q3 288 0 0 0.0
2025 Q2 206 0 0 0.0
2025 Q1 160 2 0 12500.0
2024 Q4 272 0 0 0.0
2024 Q3 532 0 0 0.0
2024 Q2 632 4 0 6329.1
2024 Q1 391 0 0 0.0
Show 63 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 303 0 0 0.0
2023 Q3 281 0 0 0.0
2023 Q2 160 2 1 12500.0
2023 Q1 132 0 0 0.0
2022 Q4 227 0 0 0.0
2022 Q3 295 0 0 0.0
2022 Q2 278 0 0 0.0
2022 Q1 142 0 0 0.0
2021 Q4 164 0 0 0.0
2021 Q3 82 0 0 0.0
2021 Q2 192 0 0 0.0
2021 Q1 86 13 5 151162.8
2020 Q4 99 0 0 0.0
2020 Q3 171 8 2 46783.6
2020 Q2 123 0 0 0.0
2020 Q1 177 0 0 0.0
2019 Q4 139 0 0 0.0
2019 Q3 60 0 0 0.0
2019 Q2 92 0 0 0.0
2019 Q1 99 0 0 0.0
2018 Q4 129 0 0 0.0
2018 Q3 51 0 0 0.0
2018 Q2 41 0 0 0.0
2018 Q1 1 0 0 0.0
2017 Q4 73 0 0 0.0
2017 Q3 30 8 2 266666.7
2017 Q2 76 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 76 0 0 0.0
2016 Q3 53 0 0 0.0
2016 Q2 26 12 0 461538.5
2016 Q1 67 0 0 0.0
2015 Q4 51 0 0 0.0
2015 Q3 16 1 0 62500.0
2015 Q2 18 0 0 0.0
2015 Q1 0 0 0
2014 Q4 17 0 0 0.0
2014 Q3 215 0 0 0.0
2014 Q2 98 10 3 102040.8
2014 Q1 25 0 0 0.0
2013 Q4 29 0 0 0.0
2013 Q3 7 2 1 285714.3
2013 Q2 135 0 0 0.0
2013 Q1 0 0 0
2012 Q4 102 0 0 0.0
2012 Q3 73 0 0 0.0
2012 Q2 94 0 0 0.0
2012 Q1 249 3 0 12048.2
2011 Q1 8 2 0 250000.0
2010 Q4 8 0 0 0.0
2010 Q3 15 0 0 0.0
2010 Q2 25 3 1 120000.0
2010 Q1 0 0 0
2009 Q4 25 0 0 0.0
2009 Q3 40 0 0 0.0
2009 Q2 40 0 0 0.0
2009 Q1 80 0 0 0.0
2008 Q2 40 9 2 225000.0
2008 Q1 40 0 0 0.0
2007 Q4 30 0 0 0.0
2007 Q3 100 0 0 0.0
2007 Q2 70 0 0 0.0
2007 Q1 32 17 3 531250.0

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 William Coon & Son, Inc

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.