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Twin Brook #3: 11 MSHA citations Coal

Grampian, Indiana County, PA  ·  Abandoned
MSHA Mine ID: 3605019

Twin Brook #3 has $1K 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
1
Years on record
1996
Latest incident
May 1996
Compliance record
MSHA citations since 2000
11
citations
6
significant & substantial
$1,059
proposed penalties
$1,059
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Twin Brook Coal Inc.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
64
inspections on record
955
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: 955 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Twin Brook #3 has $1K 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
11 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2014-04-08.
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.
54.5%
significant & substantial
0.0%
high negligence or reckless
54.5%
reasonably likely or greater
9.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 54.5% low, 45.5% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.

MSHA sampling at Twin Brook #3 shows 100% of 67 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: 2015-12-07, 10 years ago
100%
within 1.5 mg/m3
67
samples
0.83
dust max (mg/m3)
0
over MSHA ECV
ⓘ The excessive concentration value (ECV) is MSHA's own per-sample enforcement threshold, which builds in measurement uncertainty; a sample over its ECV can trigger a citation. The count covers only samples MSHA assigned an ECV.
50 samples taken by MSHA inspectors, 17 by the operator.
Most-sampled occupations
  • BULLDOZER OPERATOR58
  • HIGHLIFT OPERATOR/FRONT END LOADER6
  • BACKHOE OPERATOR1

Silica (quartz)

Last sampled: 2011-05-11, 15 years ago
13.2
silica avg (%)
6
samples
22.8
silica max (%)
Most-sampled occupations
  • BULLDOZER OPERATOR6
See US coal mines ranked by silica in their dust samples.

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.

Last sampled: 2015-11-18, 10 years ago
7%
over PEL
28
samples
Most-sampled occupations
  • BULLDOZER OPERATOR24
  • HIGHLIFT OPERATOR/FRONT END LOADER3
  • MECHANIC1
See US mines ranked by noise samples over the legal limit.
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
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.
Year within 1.5 mg/m3 samples
2015 100% 5
2014 100% 5
2013 100% 3
2012 100% 4
2011 100% 4
2010 100% 3
2009 100% 4
2008 100% 3
2007 100% 5
2005 100% 4
2004 100% 4
2003 100% 4
2002 100% 1
2001 100% 7
2000 100% 11
Silica (quartz) by year
Year silica avg (%) samples
2011 19.1 1
2010 7.5 2
2009 14.5 1
2004 22.8 1
2003 7.5 1
Noise by year
Year over PEL samples
2015 0% 1
2014 0% 2
2013 0% 3
2012 0% 1
2011 0% 2
2010 0% 2
2009 0% 2
2008 0% 1
2007 0% 3
2005 0% 1
2004 0% 2
2003 0% 1
2002 0% 1
2001 20% 5
2000 100% 1
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
Ownership history
  1. Caylor Coal Company 1974 to 1979
  2. Twin Brook Coal Inc. 1979 to present
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)
2016 0
2015 4 2,462
2014 4 22,715
2013 4 22,429
2012 4 14,263
2011 5 20,499
2010 3 15,994
2009 5 12,244
2008 5 8,507
2007 5 16,590
2006 6 36,825
2005 6 40,923
2004 4 31,186
2003 3 23,002
2002 4 31,517
2001 3 24,096
2000 2 20,332
Source: MSHA quarterly employment and production, updated weekly.

Twin Brook #3 sits in Indiana County, Pennsylvania, where the Census mining category is 2.4% 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.
Indiana County, Pennsylvania · Population 83,213
2.4%
Mining share of county employment
$58,739
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
2016 Q4 0 0 0
2016 Q3 0 0 0
2016 Q2 0 0 0
2016 Q1 0 0 0
2015 Q4 784 0 0 0.0
2015 Q3 706 0 0 0.0
2015 Q2 1,216 0 0 0.0
2015 Q1 902 0 0 0.0
Show 60 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2014 Q4 1,590 0 0 0.0
2014 Q3 1,694 0 0 0.0
2014 Q2 1,633 1 1 612.4
2014 Q1 816 0 0 0.0
2013 Q4 1,202 0 0 0.0
2013 Q3 1,613 0 0 0.0
2013 Q2 1,635 0 0 0.0
2013 Q1 1,157 0 0 0.0
2012 Q4 1,065 0 0 0.0
2012 Q3 1,103 0 0 0.0
2012 Q2 1,571 0 0 0.0
2012 Q1 1,680 0 0 0.0
2011 Q4 1,451 0 0 0.0
2011 Q3 1,377 0 0 0.0
2011 Q2 1,689 0 0 0.0
2011 Q1 1,291 0 0 0.0
2010 Q4 1,054 0 0 0.0
2010 Q3 1,103 0 0 0.0
2010 Q2 971 1 1 1029.9
2010 Q1 592 0 0 0.0
2009 Q4 1,427 0 0 0.0
2009 Q3 1,557 0 0 0.0
2009 Q2 1,966 0 0 0.0
2009 Q1 1,918 0 0 0.0
2008 Q4 2,114 0 0 0.0
2008 Q3 1,490 0 0 0.0
2008 Q2 1,283 0 0 0.0
2008 Q1 620 0 0 0.0
2007 Q4 1,624 0 0 0.0
2007 Q3 1,988 0 0 0.0
2007 Q2 1,877 0 0 0.0
2007 Q1 2,203 0 0 0.0
2006 Q4 2,509 0 0 0.0
2006 Q3 2,758 1 1 362.6
2006 Q2 2,706 0 0 0.0
2006 Q1 2,692 0 0 0.0
2005 Q4 2,355 0 0 0.0
2005 Q3 2,679 2 1 746.5
2005 Q2 2,789 0 0 0.0
2005 Q1 2,606 0 0 0.0
2004 Q4 2,570 0 0 0.0
2004 Q3 2,211 0 0 0.0
2004 Q2 1,358 0 0 0.0
2004 Q1 824 0 0 0.0
2003 Q4 745 0 0 0.0
2003 Q3 1,124 0 0 0.0
2003 Q2 1,293 0 0 0.0
2003 Q1 1,605 1 0 623.1
2002 Q4 1,719 0 0 0.0
2002 Q3 1,911 0 0 0.0
2002 Q2 1,373 0 0 0.0
2002 Q1 2,015 0 0 0.0
2001 Q4 2,309 1 0 433.1
2001 Q3 1,782 0 0 0.0
2001 Q2 730 0 0 0.0
2001 Q1 559 1 0 1788.9
2000 Q4 196 0 0 0.0
2000 Q3 1,033 0 0 0.0
2000 Q2 1,090 3 2 2752.3
2000 Q1 866 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

1996 · 1 incident

May 3, 1996 PA · Coal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Twin Brook Coal Inc. · Fall from machine

WHEN EE WAS GETTING ON DOZER HE LOST HIS BALANCE AND FELL FACE FIRST ON GROUND. HE BROKE 2 RIGHT RIBS AND HAD SOME FACIAL SCRATCHES.