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 League of Women Voters of the Akron Area is holding a public meeting on hydraulic fracturing or fracking on April 19.
The program including speakers for and against hydraulic fracturing or fracking will begin at 5:30 p.m. at the Unitarian Universalist Church, 3300 Morewood Road, Fairlawn.
Speakers are Eugene Chini of the Ohio Department of Natural Resources, Cheryl Johncox of the Buckeye Forest Council, Mike Chadsey of Energy in Depth-Ohio and Dr. Ted Voneida, a retired medical professor from the Northeastern Ohio Medical College.