Support WBURAt W.Va. Mine Explosion Memorials, Changes PromisedPlay03:57Download AudioHoward BerkesApril 06, 2011 ShareMine helmets and painted crosses sit at the entrance to Massey Energy's Upper Big Branch coal mine April 5 in Montcoal, W.Va. The memorial represents the 29 coal miners who were killed in an explosion at the mine a year ago. (AP)
