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: 426 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Clark Mine has $735 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.
$735
proposed penalties
$735
current assessed
$735
paid to date
$0
outstanding
11 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2006-10-12.
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.
MSHA sampling at Clark Mine shows 100% of 25 respirable coal dust samples met the 1.5 mg/m3 standard.
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.
Respirable coal dust
ⓘRespirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.
Last sampled: 2006-10-12, 19 years ago
100%
within 1.5 mg/m3
25
samples
0.18
dust max (mg/m3)
25 samples taken by MSHA inspectors, 0 by the operator.
Most-sampled occupations
HIGHLIFT OPERATOR/FRONT END LOADER13
CRANE OPER/DRAGLINE OPERATOR8
BACKHOE OPERATOR3
Noise
ⓘThe share counts noise samples whose measured dose exceeded the 90 dBA permissible exposure limit. It describes the sampled workplace, not what reached the miner's ear: hearing conservation programs and the hearing protection worn during the shift are recorded separately and are not reflected here.
Health sampling trend
ⓘ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.
Respirable coal dust by year
ⓘRespirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
ⓘCoal production is reported quarterly and lags the current period; the most recent quarters may be incomplete.
Year
Employees
Coal produced (tons)
2012
0
2011
0
2010
0
2009
1
2008
2
2007
1
4,676
2006
1
5,812
2005
2
16,817
2004
2
18,887
2003
2
10,614
2002
2
13,320
2001
2
15,888
2000
2
16,159
Source: MSHA quarterly employment and production, updated weekly.
Clark Mine sits in Lawrence County, Pennsylvania, where the Census mining category is 0.2% 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.
Lawrence County, Pennsylvania · Population 85,423
0.2%
Mining share of county employment
$60,779
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
2012 Q2
0
0
0
2012 Q1
0
0
0
2011 Q4
0
0
0
2011 Q3
0
0
0
2011 Q2
0
0
0
2011 Q1
0
0
0
2010 Q4
0
0
0
2010 Q3
0
0
0
Show 42 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2010 Q2
0
0
0
2010 Q1
0
0
0
2009 Q4
0
0
0
2009 Q3
0
0
0
2009 Q2
0
0
0
2009 Q1
2,469
0
0
0.0
2008 Q4
696
0
0
0.0
2008 Q3
374
0
0
0.0
2008 Q2
592
0
0
0.0
2008 Q1
605
0
0
0.0
2007 Q4
566
0
0
0.0
2007 Q3
763
0
0
0.0
2007 Q2
685
0
0
0.0
2007 Q1
526
0
0
0.0
2006 Q4
579
0
0
0.0
2006 Q3
881
0
0
0.0
2006 Q2
688
0
0
0.0
2006 Q1
907
0
0
0.0
2005 Q4
987
0
0
0.0
2005 Q3
1,586
0
0
0.0
2005 Q2
1,338
0
0
0.0
2005 Q1
1,153
0
0
0.0
2004 Q4
1,311
0
0
0.0
2004 Q3
1,288
0
0
0.0
2004 Q2
1,319
3
0
2274.5
2004 Q1
1,163
0
0
0.0
2003 Q4
1,100
0
0
0.0
2003 Q3
1,103
1
0
906.6
2003 Q2
1,366
0
0
0.0
2003 Q1
1,277
0
0
0.0
2002 Q4
1,168
2
0
1712.3
2002 Q3
948
2
0
2109.7
2002 Q2
589
0
0
0.0
2002 Q1
719
0
0
0.0
2001 Q4
1,117
0
0
0.0
2001 Q3
1,515
0
0
0.0
2001 Q2
1,324
0
0
0.0
2001 Q1
1,536
0
0
0.0
2000 Q4
1,461
1
1
684.5
2000 Q3
1,441
0
0
0.0
2000 Q2
1,298
0
0
0.0
2000 Q1
1,563
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
1993 · 1 incident
June 10, 1993PA · Coalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerSLIP OR FALL OF PERSON