The Environmental Protection Agency took the unprecedented step this week of declaring Libby a federal public health emergency…The agency pledged at least $125 million to speed the work of…[cleaning up asbestos] contaminated homes…Prosecutors detailed the extent of the health problems and the number of deaths blamed on asbestos during a recent trial of mine owner W.R. Grace & Co. and three former executives. They were acquitted last month of knowingly allowing residents of Libby to be exposed to asbestos. The…company…said it's acted responsibly to clean up the contamination. It paid millions in medical bills for residents…and agreed last year to pay $250 million to reimburse the EPA for cleanup efforts…