Causes2 dogs/Flickr Steel factory retrofit could reduce pollution by 90 percent The steel industry is one of our worst polluters, but new practices could create an almost perfectly closed loop system.
Causes www.post-gazette.com Allegheny County Board of Health votes to open comment period on proposed coke oven rules The Allegheny County Board of Health will take public comment on more stringent rules proposed for coke oven gas emissions at U.S. Steel Corp.'s Clairton Coke Works.
