Arnio Mine Metal/Non-Metal
Nu Stone Mfg & Dist LLC
· Surface
Controlled by
Charles W Corson III
Plainfield,
Windham County,
CT
·
Intermittent
MSHA Mine ID: 0600728
Arnio Mine has $48K in proposed MSHA penalties and $24K outstanding across 5 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 2006
119
citations
38
significant & substantial
$47,619
proposed penalties
$23,990
paid to date
50% of proposed penalties paid to date, a $23,629 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2005
55
inspections on record
746
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: 746 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Arnio Mine has $48K in proposed MSHA penalties and $24K 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.$48K
proposed penalties
$48K
current assessed
$24K
paid to date
$24K
outstanding
117 assessments are final orders; 5 contested dockets.
As of the most recent assessment on 2026-03-12.
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 | 71 | 0 | 0 | 0.0 |
| 2025 Q3 | 114 | 0 | 0 | 0.0 |
| 2025 Q2 | 520 | 0 | 0 | 0.0 |
| 2025 Q1 | 408 | 1 | 1 | 2451.0 |
| 2024 Q4 | 104 | 0 | 0 | 0.0 |
| 2024 Q3 | 296 | 0 | 0 | 0.0 |
| 2024 Q2 | 224 | 4 | 0 | 17857.1 |
| 2024 Q1 | 210 | 3 | 0 | 14285.7 |
Show 70 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 112 | 0 | 0 | 0.0 |
| 2023 Q3 | 168 | 0 | 0 | 0.0 |
| 2023 Q2 | 266 | 7 | 1 | 26315.8 |
| 2023 Q1 | 504 | 0 | 0 | 0.0 |
| 2022 Q4 | 430 | 0 | 0 | 0.0 |
| 2022 Q3 | 659 | 0 | 0 | 0.0 |
| 2022 Q2 | 405 | 0 | 0 | 0.0 |
| 2022 Q1 | 746 | 2 | 1 | 2681.0 |
| 2021 Q4 | 1,036 | 0 | 0 | 0.0 |
| 2021 Q1 | 118 | 0 | 0 | 0.0 |
| 2020 Q3 | 188 | 6 | 0 | 31914.9 |
| 2020 Q2 | 792 | 0 | 0 | 0.0 |
| 2020 Q1 | 519 | 0 | 0 | 0.0 |
| 2019 Q4 | 987 | 0 | 0 | 0.0 |
| 2019 Q3 | 809 | 16 | 5 | 19777.5 |
| 2019 Q2 | 632 | 0 | 0 | 0.0 |
| 2019 Q1 | 865 | 0 | 0 | 0.0 |
| 2018 Q4 | 1,247 | 0 | 0 | 0.0 |
| 2018 Q3 | 372 | 0 | 0 | 0.0 |
| 2018 Q2 | 317 | 9 | 4 | 28391.2 |
| 2018 Q1 | 564 | 0 | 0 | 0.0 |
| 2017 Q4 | 346 | 0 | 0 | 0.0 |
| 2017 Q3 | 357 | 0 | 0 | 0.0 |
| 2017 Q2 | 576 | 6 | 3 | 10416.7 |
| 2017 Q1 | 391 | 0 | 0 | 0.0 |
| 2016 Q4 | 627 | 0 | 0 | 0.0 |
| 2016 Q3 | 1,016 | 0 | 0 | 0.0 |
| 2016 Q2 | 1,314 | 0 | 0 | 0.0 |
| 2016 Q1 | 969 | 2 | 0 | 2064.0 |
| 2015 Q4 | 35 | 0 | 0 | 0.0 |
| 2015 Q3 | 1,082 | 2 | 2 | 1848.4 |
| 2015 Q2 | 373 | 0 | 0 | 0.0 |
| 2015 Q1 | 293 | 1 | 0 | 3413.0 |
| 2014 Q4 | 778 | 0 | 0 | 0.0 |
| 2014 Q3 | 1,003 | 0 | 0 | 0.0 |
| 2014 Q2 | 1,050 | 0 | 0 | 0.0 |
| 2014 Q1 | 714 | 1 | 0 | 1400.6 |
| 2013 Q4 | 1,114 | 0 | 0 | 0.0 |
| 2013 Q3 | 1,089 | 0 | 0 | 0.0 |
| 2013 Q2 | 1,128 | 0 | 0 | 0.0 |
| 2013 Q1 | 643 | 5 | 4 | 7776.0 |
| 2012 Q4 | 761 | 5 | 1 | 6570.3 |
| 2012 Q3 | 1,144 | 0 | 0 | 0.0 |
| 2012 Q2 | 39 | 7 | 2 | 179487.2 |
| 2012 Q1 | 1,158 | 0 | 0 | 0.0 |
| 2011 Q4 | 1,175 | 0 | 0 | 0.0 |
| 2011 Q3 | 1,262 | 0 | 0 | 0.0 |
| 2011 Q2 | 1,461 | 5 | 2 | 3422.3 |
| 2011 Q1 | 222 | 0 | 0 | 0.0 |
| 2010 Q4 | 1,240 | 0 | 0 | 0.0 |
| 2010 Q3 | 2,755 | 0 | 0 | 0.0 |
| 2010 Q2 | 1,891 | 17 | 8 | 8990.0 |
| 2010 Q1 | 1,439 | 0 | 0 | 0.0 |
| 2009 Q4 | 2,165 | 0 | 0 | 0.0 |
| 2009 Q3 | 2,225 | 0 | 0 | 0.0 |
| 2009 Q2 | 2,956 | 0 | 0 | 0.0 |
| 2009 Q1 | 1,708 | 2 | 2 | 1171.0 |
| 2008 Q4 | 2,791 | 0 | 0 | 0.0 |
| 2008 Q3 | 2,730 | 0 | 0 | 0.0 |
| 2008 Q2 | 2,687 | 0 | 0 | 0.0 |
| 2008 Q1 | 3,018 | 3 | 0 | 994.0 |
| 2007 Q4 | 2,409 | 0 | 0 | 0.0 |
| 2007 Q3 | 1,674 | 0 | 0 | 0.0 |
| 2007 Q2 | 1,936 | 4 | 0 | 2066.1 |
| 2007 Q1 | 579 | 0 | 0 | 0.0 |
| 2006 Q4 | 1,362 | 0 | 0 | 0.0 |
| 2006 Q3 | 1,079 | 0 | 0 | 0.0 |
| 2006 Q2 | 1,461 | 0 | 0 | 0.0 |
| 2006 Q1 | 1,120 | 7 | 2 | 6250.0 |
| 2005 Q4 | 589 | 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 Arnio Mine
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.