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.
1. According to the Cleveland Plain Dealer, the Ohio Shale Coalition is projecting that nearly 2,000 horizontal wells will be drilled into Ohio's Utica shale by the end of 2014.
At present, 359 wells are permitted and 129 have been drilled.
At present, drillers have 41 drilling rigs working in Ohio, said Linda Woggon of the coalition.
She said nearly 66,000 jobs have been created in eastern Ohio.
The Timken Co. reported that 24 percent of its global revenues are derived from sales to drilling companies, said spokesman Shawn Seanor.
2. The Canton Repository reported that the Ohio Oil and Gas Association's annual expo will move from Canton to Cleveland.
The event, on Dec. 4-6, will be held at the International Exposition Center next to Cleveland Hopkins Airport.
It was held last year at Canton's Memorial Civic Center.