Page 9

A dozen dirty documents

By Kristen Lombardi and Jared Bennett

Benzene and worker cancers: 'An American tragedy'

By Kristen Lombardi

Internal documents reveal industry 'pattern of behavior' on toxic chemicals

By David Heath and Jim Morris

Years after black lung claim was wrongly denied, coal miner gets his due

By Chris Hamby

Five-state study finds high levels of airborne chemicals near oil and gas sites

By Jamie Smith Hopkins

Pennsylvania congressman launches frack waste investigation

By David Hasemyer and Zahra Hirji

How a coal miner's autopsy proved a top doctor wrong

By Chris Hamby

New air monitor planned for heavily fracked South Texas county

By Lisa Song and David Hasemyer

Open pits offer cheap disposal for fracking sludge, but health worries mount

By David Hasemyer and Zahra Hirji

Bill aims to stop coal companies from denying benefits to miners with black lung

By Chris Hamby

Black lung disease surges to highs not seen since the '70s, research shows

By Chris Hamby

National Academy of Sciences agrees with EPA that formaldehyde causes cancer

By David Heath

EPA: No comment on fracking air pollution

By Jim Morris and Lisa Song

Black lung claims by 1,100 coal miners may have been wrongly denied

By Chris Hamby

Families sick from fracking turn to scientists

By Lisa Song