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.
New federal rules on hydraulically fracturing or fracking federal lands may cost drillers as much as $1.5 billion.
The Western Energy Alliance is pushing the Bureau of Land Management to suspend the new rules on federal lands in the West.
The BLM had released its new rules about a month ago.
You can read the story by the Marcellus Drilling News at http://marcellusdrilling.com/2012/06/new-fracking-rules-for-federal-lands-will-cost-1-5b/