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.
CONSOL Energy reported the results of a horizontal production well in eastern Ohio's Noble County.
Noble !A produced peak 24 hour flows of 9 million cubic feet of natural gas plus 10 barrels of condensate per day, the company said.
It is currently drilling another well in Seneca Township in Noble County.
Both wells are a joint venture with Hess Corp.
CONSOL Energy drilled four wells and completed two wells in the Utica shale in the third quarter 2012.
It expects to drill eight Utica shale wells in 2012 in the joint venture. It has two rigs in Ohio: in Mahoning and Tuscarawas counties..
It also has wells in Portage, Tuscarawas and Mahoning counties.