Ohio has approved 1,410 Utica shale permits, as of July 19.
Of that total, 971 Utica wells have been drilled and 483 are in production, according to the Ohio Department of Natural Resources.
Ohio has 48 drilling rigs at work.
Fifteen new permits were approved: two in Belmont County, two in Carroll County, one in Guernsey County, seven in Harrison County, one in Jefferson County and two in Monroe County.
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.