1/29/2013: Rescinded wastewater permit; mergers down in Appalachian gas fields

- DEP has rescinded a wastewater treatment permit that would have allowed a company to spread chemically contaminated salts on roadways, sidewalks and fields statewide. (Post-Gazette)

- Mergers and acquisitions have diminished in Appalachian oil and gas fields, bucking a national trend. (Pittsburgh Tribune-Review)

- And one we missed yesterday: overlooked advances in horizontal drilling. (NPR)