Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.
From the Associated Press:
Pennsylvania Attorney General Kathleen Kane has filed criminal charges against XTO Energy, Inc. over a 2010 spill of natural gas drilling wastewater in Lycoming County.
XTO says Tuesday that it will challenge the criminal charges, which the company calls baseless, unprecedented and an abuse of prosecutorial discretion.
Kane says that a grand jury recommended the charges for the spill of more than 50,000 gallons of toxic wastewater.
XTO is charged with five counts under the Clean Streams Law and three counts under the Solid Waste Management Act.
XTO is an Exxon Mobil subsidiary, based in Fort Worth, Texas.
In July XTO reached a settlement over the same spill with the U.S. Environmental Protection Agency.
Kane says the case will be prosecuted in Lycoming County by her office's environmental crimes section.