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.
Ohio manufacturers may be able to tap in the state's Utica shale and that could lower energy costs and boost manufacturing in Ohio, according to the head of the National Association of Manufacturers.
Shale energy is a potential game-changer, said chief executive Jay Timmons in comments Friday at the Cleveland City Club, the Cleveland Plain Dealer reported.
"The promise of affordable fuel from shale cannot be overstated," he said.
Click here to read the Plain Dealer story by reporter Robert Schoenberger.