Mining Incidents

Mason Enterprises Metal/Non-Metal

Mason Enterprises · Surface
Controlled by Harley E Mason Jr
Stark, Coos County, NH  ·  Intermittent
MSHA Mine ID: 2700451

Mason Enterprises has $3K 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 2011
24
citations
4
significant & substantial
$2,860
proposed penalties
$2,860
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2011
16
inspections on record
249
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: 249 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mason Enterprises has $3K 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.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
24 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-10-31.
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 335 0 0 0.0
2025 Q2 966 0 0 0.0
2025 Q1 245 0 0 0.0
2024 Q4 501 0 0 0.0
2024 Q3 1,110 0 0 0.0
2024 Q2 1,001 0 0 0.0
2024 Q1 0 0 0
2023 Q4 252 1 0 3968.3
Show 48 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q3 1,192 0 0 0.0
2023 Q2 692 0 0 0.0
2023 Q1 3 0 0 0.0
2022 Q4 1,221 1 1 819.0
2022 Q2 731 0 0 0.0
2022 Q1 252 0 0 0.0
2021 Q4 335 2 0 5970.1
2021 Q3 949 1 0 1053.7
2021 Q2 727 0 0 0.0
2021 Q1 297 0 0 0.0
2020 Q4 438 0 0 0.0
2020 Q3 621 0 0 0.0
2020 Q2 563 0 0 0.0
2020 Q1 281 0 0 0.0
2019 Q4 955 0 0 0.0
2019 Q3 953 0 0 0.0
2019 Q2 679 0 0 0.0
2018 Q4 684 4 1 5848.0
2018 Q3 588 2 0 3401.4
2018 Q2 847 0 0 0.0
2018 Q1 273 0 0 0.0
2017 Q4 684 0 0 0.0
2017 Q3 368 0 0 0.0
2017 Q2 453 0 0 0.0
2017 Q1 139 0 0 0.0
2016 Q4 277 0 0 0.0
2016 Q3 2,417 1 0 413.7
2016 Q2 581 0 0 0.0
2016 Q1 146 0 0 0.0
2015 Q4 179 0 0 0.0
2015 Q3 295 4 1 13559.3
2015 Q2 351 0 0 0.0
2015 Q1 124 0 0 0.0
2014 Q4 322 0 0 0.0
2014 Q3 507 0 0 0.0
2014 Q2 548 2 0 3649.6
2014 Q1 113 0 0 0.0
2013 Q4 252 0 0 0.0
2013 Q3 307 0 0 0.0
2013 Q2 194 0 0 0.0
2013 Q1 0 0 0
2012 Q4 100 3 0 30000.0
2012 Q3 279 0 0 0.0
2012 Q2 436 0 0 0.0
2012 Q1 0 0 0
2011 Q4 1,260 1 1 793.7
2011 Q3 993 2 0 2014.1
2011 Q2 43 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.

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The full compliance file on Mason Enterprises

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.