Penn State Figures Out How to Convert Garbage into Proppants February 14, 2014 Industrywide Issues, Pennsylvania, Research, Sand/Proppant, Statewide PA Username Password Remember me Forgot Password? Join Us Related Post navigation WPX Energy Abandoning the Marcellus? Sure Looks That WayNatgas Jumps Thru Hoops for Bats While Solar Farm Torches Turtles You do not have permission to view the comments. Click here to cancel reply. Please Login to post a comment Notify me of follow-up comments by email.