Mining Incidents

Castlemont #1: 29 MSHA citations Metal/Non-Metal

M M Quarries Inc · Surface
Controlled by Jason T Burke
Montrose, Susquehanna County, PA  ·  Abandoned
MSHA Mine ID: 3609453

Castlemont #1 has $4K 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 2006
29
citations
7
significant & substantial
$3,761
proposed penalties
$3,761
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2006
27
inspections on record
279
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: 279 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Castlemont #1 has $4K 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
29 assessments are final orders; 1 contested dockets.
Of $60 in penalties contested before the Commission, $60 was upheld in final decisions.
As of the most recent assessment on 2026-05-19.
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.
24.1%
significant & substantial
6.9%
high negligence or reckless
24.1%
reasonably likely or greater
41.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 27.6% low, 65.5% moderate, 6.9% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
1 citations taken to the federal commission · 3% of citations on record
  • Settled 1 · 100%
0%
Penalty reduction in decided contests
$60 proposed, $60 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2007-06-21.
Contested penalties
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
PENN 2007-280M Settlement Lesnick 2007 $60 → $60
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2021-03-10, 5 years ago
0%
of limit-tested samples over the exposure limit
6
samples
2
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz3
  • Respirable dust, <.1mg3
Show the individual readings (6)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-03-10 Quartz, respirable, >1% Qtz 0.14 Front-end Loader Operator
2021-03-10 Respirable dust, <.1mg 0 Drill Operator, Rotary Air
2015-07-08 Quartz, respirable, >1% Qtz 0.41 0.51 0.80 Drill Operator, Rotary Air
2015-07-08 Respirable dust, <.1mg 0 Truck Driver
2012-10-17 Quartz, respirable, >1% Qtz 0.14 0.29 0.48 Drill Operator, Rotary Air
2012-10-17 Respirable dust, <.1mg 0 Laborer, Bullgang
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. Rock Ridge Stone 2006 to 2015
  2. Rock Ridge Stone 2015 to 2020
  3. M M Quarries Inc 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2025 2
2024 4
2023 10
2022 8
2021 6
2020 3
2019 2
2018 10
2017 12
2016 13
2015 9
2014 12
2013 12
2012 9
2011 8
2010 3
2009 6
2008 6
2007 7
2006 6
Source: MSHA quarterly employment and production, updated weekly.

Castlemont #1 sits in Susquehanna County, Pennsylvania, where the Census mining category is 3.2% 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.
Susquehanna County, Pennsylvania · Population 38,349
3.2%
Mining share of county employment
$66,930
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 Q1 480 0 0 0.0
2025 Q4 480 0 0 0.0
2025 Q3 689 0 0 0.0
2025 Q2 523 0 0 0.0
2025 Q1 480 0 0 0.0
2024 Q4 770 0 0 0.0
2024 Q3 62 2 0 32258.1
2024 Q2 3,604 0 0 0.0
Show 69 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 480 0 0 0.0
2023 Q4 4,795 0 0 0.0
2023 Q3 4,790 1 0 208.8
2023 Q2 5,335 0 0 0.0
2023 Q1 4,800 0 0 0.0
2022 Q4 5,286 0 0 0.0
2022 Q2 2,000 0 0 0.0
2022 Q1 1,288 0 0 0.0
2021 Q4 485 0 0 0.0
2021 Q3 1,425 0 0 0.0
2021 Q2 1,995 0 0 0.0
2021 Q1 1,276 2 0 1567.4
2020 Q4 1,057 0 0 0.0
2020 Q3 796 1 1 1256.3
2020 Q2 0 0 0
2019 Q4 27 0 0 0.0
2019 Q3 113 0 0 0.0
2019 Q2 0 0 0
2019 Q1 0 0 0
2018 Q4 1,175 0 0 0.0
2018 Q3 2,005 0 0 0.0
2018 Q2 3,605 0 0 0.0
2018 Q1 371 0 0 0.0
2017 Q4 2,156 0 0 0.0
2017 Q3 3,216 0 0 0.0
2017 Q2 2,286 2 0 874.9
2017 Q1 125 0 0 0.0
2016 Q4 1,558 0 0 0.0
2016 Q3 3,816 1 0 262.1
2016 Q2 4,322 0 0 0.0
2016 Q1 129 0 0 0.0
2015 Q4 2,449 1 1 408.3
2015 Q3 2,554 2 1 783.1
2015 Q2 2,481 0 0 0.0
2015 Q1 17 0 0 0.0
2014 Q4 1,289 3 1 2327.4
2014 Q3 3,676 0 0 0.0
2014 Q2 1,930 0 0 0.0
2014 Q1 165 0 0 0.0
2013 Q4 1,704 0 0 0.0
2013 Q3 1,589 0 0 0.0
2013 Q2 3,907 0 0 0.0
2013 Q1 1,169 0 0 0.0
2012 Q4 1,449 1 0 690.1
2012 Q3 1,696 0 0 0.0
2012 Q2 1,416 0 0 0.0
2012 Q1 874 0 0 0.0
2011 Q4 2,094 0 0 0.0
2011 Q3 2,205 0 0 0.0
2011 Q2 2,733 0 0 0.0
2011 Q1 285 0 0 0.0
2010 Q4 713 0 0 0.0
2010 Q3 561 1 0 1782.5
2010 Q2 589 0 0 0.0
2010 Q1 15 0 0 0.0
2009 Q4 420 0 0 0.0
2009 Q3 1,085 2 1 1843.3
2009 Q2 1,340 0 0 0.0
2009 Q1 6 0 0 0.0
2008 Q4 155 0 0 0.0
2008 Q3 1,320 0 0 0.0
2008 Q2 1,548 0 0 0.0
2008 Q1 194 0 0 0.0
2007 Q4 59 0 0 0.0
2007 Q3 987 0 0 0.0
2007 Q2 1,257 1 0 795.5
2007 Q1 392 0 0 0.0
2006 Q4 751 0 0 0.0
2006 Q3 594 1 0 1683.5

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.