Need To Know: In The Coal

Need to Know correspondent John Larson reports about coal mine safety, focusing on Massey Energy, a company involved in the West Virginia mine explosion that the U.S. Mine Safety and Health Administration calls "the worst mining disaster in almost 40 years." Larson also examines the investigation into its possible causes.

PBS | December 10, 2010

Tags:. .coal. .massey. .examines. .correspondent. .disaster