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: 140 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
MC 10 has $3K 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.
$3K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
23 assessments are final orders; 1 contested dockets.
Of $643 in penalties contested before the Commission, $500 was upheld in final decisions.
As of the most recent assessment on 2013-08-28.
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.
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.
5citations taken to the federal commission · 22% of citations on record
Settled
5 · 100%
0%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 1 decided S&S contests · industry: 79%
22%
Penalty reduction in decided contests
$643 proposed, $500 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2013-12-17.
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.
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: 2009-03-26, 17 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
2009-03-26
Respirable dust, <.1mg
0
Backhoe Operator
2009-03-26
Quartz, respirable, >1% Qtz
0.12
0.79
0.15
Crusher Oper/Worker
2009-03-26
Respirable dust, <.1mg
0
Truck Driver
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2013
1
2012
2
2011
1
2010
2
2009
2
2008
2
2007
1
2006
1
Source: MSHA quarterly employment and production, updated weekly.
MC 10 sits in Plymouth County, Massachusetts, 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.
Plymouth County, Massachusetts · Population 531,889
0.1%
Mining share of county employment
$109,698
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
2013 Q3
395
5
0
12658.2
2013 Q2
30
0
0
0.0
2013 Q1
73
0
0
0.0
2012 Q4
1,026
0
0
0.0
2012 Q3
292
0
0
0.0
2012 Q2
141
0
0
0.0
2012 Q1
42
0
0
0.0
2011 Q4
308
0
0
0.0
Show 23 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2011 Q3
91
0
0
0.0
2011 Q2
275
4
1
14545.5
2011 Q1
98
0
0
0.0
2010 Q4
490
0
0
0.0
2010 Q3
593
1
1
1686.3
2010 Q2
253
0
0
0.0
2010 Q1
19
0
0
0.0
2009 Q4
205
0
0
0.0
2009 Q3
650
0
0
0.0
2009 Q2
377
0
0
0.0
2009 Q1
290
5
1
17241.4
2008 Q4
91
1
0
10989.0
2008 Q3
88
3
0
34090.9
2008 Q2
249
0
0
0.0
2008 Q1
192
0
0
0.0
2007 Q4
134
0
0
0.0
2007 Q3
235
0
0
0.0
2007 Q2
400
0
0
0.0
2007 Q1
230
1
1
4347.8
2006 Q4
265
0
0
0.0
2006 Q3
283
0
0
0.0
2006 Q2
308
0
0
0.0
2006 Q1
1,276
3
0
2351.1
No fatalities recorded at this mine.
Reportable incidents
1 on file
2009 · 1 incident
December 1, 2009MA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSTRIKING OR BUMPING