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.
The Wall Street Journal reports today that Cheaspeake Energy Corp. has agreed to let the U.S. Environmental Protection Agency conduct extensive tests at one of its drilling sites as part of an investigation into the safety of hydraulic fracturing.
The location of the well has not been determined.
Range Resources is also close to a simialr agreement, the Wall Street Jiournl says.
Chesapeake is the No. 1 driller in Ohio's Utica shale.