MSHA sampling at Coalbank Fork No 9a shows 100% of 1 respirable coal dust samples met the 1.5 mg/m3 standard, plus the mine's fatality, citation, and penalty record.
Health sampling
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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
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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: 2012-03-28, 14 years ago
1 samples taken by MSHA inspectors, 0 by the operator.
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
Local economic context
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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.
Randolph County, West Virginia · Population 27,782
2.6%
Mining share of county employment
$55,057
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.