This past summer MDN brought you the story of Keystone Sanitary Landfill and their request to expand the landfill skyward (see DEP Delays Scranton Landfill Expansion; Requires Study). Keystone Landfill, on the outskirts of Scranton, PA, is the state's third busiest landfill. They accept a lot of Marcellus drill cuttings (leftover rock and dirt). A