Mining Incidents

Mast Quarry Metal/Non-Metal

Controlled by VINCI Group
Dyer Brook, Aroostook County, ME  ·  Intermittent
MSHA Mine ID: 1700909

Mast Quarry has $325 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 2013
3
citations
0
significant & substantial
$325
proposed penalties
$325
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2013
5
inspections on record
64
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: 64 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mast Quarry has $325 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.
$325
proposed penalties
$325
current assessed
$325
paid to date
$0
outstanding
3 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2021-06-17.
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 1 0 0 0.0
2025 Q3 13 0 0 0.0
2025 Q2 131 0 0 0.0
2025 Q1 2 0 0 0.0
2024 Q4 2 0 0 0.0
2024 Q3 101 0 0 0.0
2024 Q2 218 0 0 0.0
2024 Q1 2 0 0 0.0
Show 42 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 32 0 0 0.0
2023 Q3 94 0 0 0.0
2023 Q2 1 0 0 0.0
2023 Q1 1 0 0 0.0
2022 Q4 1 0 0 0.0
2022 Q3 1 0 0 0.0
2022 Q2 1 0 0 0.0
2022 Q1 0 0 0
2021 Q4 0 0 0
2021 Q3 0 0 0
2021 Q2 6 1 0 166666.7
2021 Q1 1 0 0 0.0
2020 Q4 1 0 0 0.0
2020 Q3 37 0 0 0.0
2020 Q2 2 0 0 0.0
2020 Q1 2 0 0 0.0
2019 Q4 2 0 0 0.0
2019 Q3 4 0 0 0.0
2019 Q2 4 0 0 0.0
2019 Q1 4 0 0 0.0
2018 Q3 1 0 0 0.0
2018 Q2 1 0 0 0.0
2018 Q1 1 0 0 0.0
2017 Q4 1 0 0 0.0
2017 Q3 1 0 0 0.0
2017 Q2 1 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 1 0 0 0.0
2016 Q3 1 0 0 0.0
2016 Q2 1 0 0 0.0
2016 Q1 1 0 0 0.0
2015 Q4 0 0 0
2015 Q3 0 0 0
2015 Q2 0 0 0
2015 Q1 1 0 0 0.0
2014 Q4 0 0 0
2014 Q3 1 0 0 0.0
2014 Q2 1 0 0 0.0
2014 Q1 1 0 0 0.0
2013 Q4 46 0 0 0.0
2013 Q3 100 0 0 0.0
2013 Q2 514 2 0 3891.1

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 Mast Quarry

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.