FILE - In this April 28, 2011 file photo, unidentified road workers wear protective gear against possible asbestos contamination as they load material from a road resurfacing project in

 

              FILE - In this April 28, 2011 file photo, unidentified road workers wear protective gear against possible asbestos contamination as they load material from a road resurfacing project in
FILE - In this April 28, 2011 file photo, unidentified road workers wear protective gear against possible asbestos contamination as they load material from a road resurfacing project in downtown Libby, Mont. W.R. Grace, Inc., the chemical company blamed for polluting Libby, Mont. with asbestos dust that has killed hundreds of people, is pushing back against the Environmental Agency proposal and seeking to have it revised. Attorneys and scientists for W.R. Grace Inc., which operated an asbestos mine in Libby for three decades, say the EPA proposal would frustrate cleanup efforts by setting an unattainable standard for exposures. (AP Photo/Matthew Brown)
Tags: EPA