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.
Companies in the greater Cleveland area are benefiting from the early development of the Utica shale in Ohio, a survey from the nonprofit Cleveland Engineering Society says.
Nearly 54 percent of engineering leaders in private industry say that oil and gas developments are impacting their business, according to the survey. Nearly 77 percent of engineering leaders said they expect positive impact on jobs and their businesses in the next 12 months.
The society surveyed engineering leaders of more than 1,600 engineering and related professionals in the Northeast Ohio region.