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.
Don't despair over the new production figures from the Utica shale in Ohio, writes John Kingston at Platt's blog The Barrel.
Kingston: "The release of Ohio’s 2012 production figures last week by the state hit the market with a thud, disappointing just about any analyst who checked in with their views. 'Bust' was a commonly-heard theme about the Utica, supposedly the next-great US shale play.
"So it took a few days, but there’s now an alternative voice, put forth by Sandy Fielden of our friends from RBN Energy. Fielden, in a just-released analysis, makes two points: it’s too early to get too worked up, and the Utica play is going to benefit from preparing for a rush of condensate production."
Utica production may surge this year, the article says. Read the whole thing here.