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.
McClatchy news service reports U.S. shale is causing oil production to boom.
"WASHINGTON — U.S. oil production has soared to heights not seen in 20 years, largely driven by an explosion in crude harvested from Texas shale rock.
"America is producing more than 7 million barrels of oil a day, the highest volume since 1992, according to figures released Thursday by the U.S. Energy Information Administration. It’s another sign of the transformation of American energy, as the nation is forecast to overtake Saudi Arabia as the world’s top oil producer in just a few years."
Read the whole thing here.