One year after 29 coal miners lost their lives in a massive explosion in West Virginia, state and federal officials vowed not to let such a disaster happen again.
"We will never forget this tragedy," said Labor Secretary Hilda Solis at a memorial service in Whitesville, W.Va., on Tuesday. "Because only by remembering will we continue our vigilance to make sure that this type of tragedy never happens again."
Solis spoke at the second of two services held on the first anniversary of the tragedy at Massey Energy's Upper Big Branch mine.