Mining Incidents

PORTALBE PLANT S/N 505M2584: 69 MSHA citations Metal/Non-Metal

STS Construction · Surface
Controlled by Mark Stuart
LEBANON, York County, ME  ·  Intermittent
MSHA Mine ID: 1700693

PORTALBE PLANT S/N 505M2584 has $10K 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 2001
69
citations
15
significant & substantial
$9,740
proposed penalties
$9,740
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
41
inspections on record
368
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: 368 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

PORTALBE PLANT S/N 505M2584 has $10K 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.
$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$0
outstanding
69 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-28.
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.
21.7%
significant & substantial
8.7%
high negligence or reckless
23.2%
reasonably likely or greater
60.9%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 13.0% low, 78.3% moderate, 8.7% 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: 2021-08-16, 5 years ago
0%
of limit-tested samples over the exposure limit
3
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg2
  • Quartz, respirable, >1% Qtz1
Show the individual readings (3)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-08-16 Respirable dust, <.1mg 0 Crusher Oper/Worker
2001-03-21 Quartz, respirable, >1% Qtz 0.2 1.08 0.19 Backhoe Operator
2001-03-21 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. STS Construction 2001 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 2
2023 2
2022 2
2021 2
2020 2
2019 2
2018 2
2017 2
2016 2
2015 2
2014 2
2013 3
2012 2
2011 3
2010 3
2009 3
2008 3
2007 3
2006 4
2005 3
2004 2
2003 5
2002 5
2001 4
Source: MSHA quarterly employment and production, updated weekly.

PORTALBE PLANT S/N 505M2584 sits in York County, Maine, where the Census mining category is 0.1% 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.
York County, Maine · Population 214,731
0.1%
Mining share of county employment
$82,904
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 545 9 2 16513.8
2026 Q1 92 0 0 0.0
2025 Q4 363 0 0 0.0
2025 Q3 459 0 0 0.0
2025 Q2 505 0 0 0.0
2025 Q1 230 2 0 8695.7
2024 Q4 383 0 0 0.0
2024 Q3 478 0 0 0.0
Show 94 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 515 5 1 9708.7
2024 Q1 394 0 0 0.0
2023 Q4 389 0 0 0.0
2023 Q3 464 5 1 10775.9
2023 Q2 532 0 0 0.0
2023 Q1 68 0 0 0.0
2022 Q4 290 0 0 0.0
2022 Q3 99 3 0 30303.0
2022 Q2 287 0 0 0.0
2022 Q1 1 0 0 0.0
2021 Q4 16 0 0 0.0
2021 Q3 151 4 1 26490.1
2021 Q2 225 0 0 0.0
2021 Q1 17 0 0 0.0
2020 Q4 231 0 0 0.0
2020 Q3 69 0 0 0.0
2020 Q2 159 1 0 6289.3
2020 Q1 194 0 0 0.0
2019 Q4 1 0 0 0.0
2019 Q3 95 4 1 42105.3
2019 Q2 178 0 0 0.0
2019 Q1 62 0 0 0.0
2018 Q4 41 0 0 0.0
2018 Q3 101 0 0 0.0
2018 Q2 234 0 0 0.0
2018 Q1 71 0 0 0.0
2017 Q4 73 0 0 0.0
2017 Q3 59 3 1 50847.5
2017 Q2 103 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 115 0 0 0.0
2016 Q3 26 0 0 0.0
2016 Q2 128 0 0 0.0
2016 Q1 1 0 0 0.0
2015 Q4 54 0 0 0.0
2015 Q3 32 0 0 0.0
2015 Q2 72 5 2 69444.4
2015 Q1 1 0 0 0.0
2014 Q4 97 0 0 0.0
2014 Q3 202 1 1 4950.5
2014 Q2 150 0 0 0.0
2014 Q1 1 0 0 0.0
2013 Q4 238 0 0 0.0
2013 Q3 156 2 0 12820.5
2013 Q2 198 0 0 0.0
2013 Q1 25 0 0 0.0
2012 Q4 289 0 0 0.0
2012 Q3 1 0 0 0.0
2012 Q2 96 3 2 31250.0
2012 Q1 1 0 0 0.0
2011 Q4 89 0 0 0.0
2011 Q3 164 0 0 0.0
2011 Q2 177 0 0 0.0
2011 Q1 1 0 0 0.0
2010 Q4 27 0 0 0.0
2010 Q3 168 0 0 0.0
2010 Q2 154 0 0 0.0
2010 Q1 108 0 0 0.0
2009 Q4 72 0 0 0.0
2009 Q3 187 0 0 0.0
2009 Q2 1 0 0 0.0
2009 Q1 1 0 0 0.0
2008 Q4 7 4 0 571428.6
2008 Q3 227 0 0 0.0
2008 Q2 301 2 1 6644.5
2008 Q1 2 0 0 0.0
2007 Q4 281 0 0 0.0
2007 Q3 344 0 0 0.0
2007 Q2 217 0 0 0.0
2007 Q1 1 0 0 0.0
2006 Q4 471 0 0 0.0
2006 Q3 186 6 0 32258.1
2006 Q2 87 0 0 0.0
2006 Q1 246 0 0 0.0
2005 Q4 204 0 0 0.0
2005 Q3 145 5 1 34482.8
2005 Q2 369 0 0 0.0
2005 Q1 1 0 0 0.0
2004 Q4 1 0 0 0.0
2004 Q3 77 0 0 0.0
2004 Q2 574 0 0 0.0
2004 Q1 1 0 0 0.0
2003 Q4 1,022 0 0 0.0
2003 Q3 563 0 0 0.0
2003 Q2 754 0 0 0.0
2003 Q1 92 0 0 0.0
2002 Q4 36 0 0 0.0
2002 Q3 289 0 0 0.0
2002 Q2 474 0 0 0.0
2002 Q1 979 0 0 0.0
2001 Q4 397 0 0 0.0
2001 Q3 446 0 0 0.0
2001 Q2 224 0 0 0.0
2001 Q1 183 5 1 27322.4

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.