Mining Incidents

New Boston Sand & Stone: 43 MSHA citations Metal/Non-Metal

Thibeault Corp. · Surface
Controlled by Ernest J Thibeault III
New Boston, Hillsborough County, NH  ·  Intermittent
MSHA Mine ID: 2700444

New Boston Sand & Stone has $5K in proposed MSHA penalties and $302 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 2010
43
citations
0
significant & substantial
$5,143
proposed penalties
$4,841
paid to date
94% of proposed penalties paid to date, a $302 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2010
25
inspections on record
270
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: 270 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

New Boston Sand & Stone has $5K in proposed MSHA penalties and $302 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$302
outstanding
43 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-06-10.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
0.0%
significant & substantial
34.9%
high negligence or reckless
0.0%
reasonably likely or greater
18.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 4.7% low, 60.5% moderate, 34.9% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2021-12-01, 4 years ago
3
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg3
Show the individual readings (3)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-12-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-06-04 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-09-15 Respirable dust, <.1mg 0 Front-end Loader Operator
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Thibeault Corp. 2010 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 4
2025 5
2024 3
2023 3
2022 2
2021 5
2020 4
2019 5
2018 2
2017 2
2016 2
2015 2
2014 2
2013 2
2012 2
2011 3
2010 2
Source: MSHA quarterly employment and production, updated weekly.

New Boston Sand & Stone sits in Hillsborough County, New Hampshire, where the Census mining category is 0.0% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Hillsborough County, New Hampshire · Population 424,732
0.0%
Mining share of county employment
$100,436
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 810 2 0 2469.1
2026 Q1 682 0 0 0.0
2025 Q4 1,168 0 0 0.0
2025 Q3 743 0 0 0.0
2025 Q2 558 0 0 0.0
2025 Q1 145 0 0 0.0
2024 Q4 30 0 0 0.0
2024 Q3 227 0 0 0.0
Show 56 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 615 1 0 1626.0
2024 Q1 505 0 0 0.0
2023 Q4 547 0 0 0.0
2023 Q3 547 0 0 0.0
2023 Q2 620 2 0 3225.8
2023 Q1 484 0 0 0.0
2022 Q4 515 0 0 0.0
2022 Q3 565 0 0 0.0
2022 Q2 597 0 0 0.0
2022 Q1 532 0 0 0.0
2021 Q4 1,010 4 0 3960.4
2021 Q3 605 0 0 0.0
2021 Q2 485 0 0 0.0
2021 Q1 912 5 0 5482.5
2020 Q4 654 0 0 0.0
2020 Q3 689 0 0 0.0
2020 Q2 682 3 0 4398.8
2020 Q1 748 0 0 0.0
2019 Q4 954 0 0 0.0
2019 Q3 2,590 0 0 0.0
2019 Q2 720 0 0 0.0
2019 Q1 721 0 0 0.0
2018 Q4 591 3 0 5076.1
2018 Q3 518 0 0 0.0
2018 Q2 635 0 0 0.0
2018 Q1 541 0 0 0.0
2017 Q4 536 1 0 1865.7
2017 Q3 533 0 0 0.0
2017 Q2 541 0 0 0.0
2017 Q1 446 2 0 4484.3
2016 Q4 565 0 0 0.0
2016 Q3 625 2 0 3200.0
2016 Q2 550 0 0 0.0
2016 Q1 450 1 0 2222.2
2015 Q4 526 0 0 0.0
2015 Q3 549 0 0 0.0
2015 Q2 526 2 0 3802.3
2015 Q1 319 0 0 0.0
2014 Q4 603 0 0 0.0
2014 Q3 561 0 0 0.0
2014 Q2 501 0 0 0.0
2014 Q1 392 0 0 0.0
2013 Q4 513 1 0 1949.3
2013 Q3 271 0 0 0.0
2013 Q2 1,039 0 0 0.0
2013 Q1 0 0 0
2012 Q4 531 4 0 7533.0
2012 Q3 467 0 0 0.0
2012 Q2 551 0 0 0.0
2012 Q1 40 0 0 0.0
2011 Q4 498 2 0 4016.1
2011 Q3 622 0 0 0.0
2011 Q2 340 0 0 0.0
2011 Q1 569 0 0 0.0
2010 Q4 1 2 0 2000000.0
2010 Q3 139 6 0 43165.5

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.