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.
It was a busy week for Utica shale permitting in Ohio.
A total of 20 permits were issued during the week that ended March 2.
That includes 13 permits in Carroll County, one in Columbiana, three in Guernsey, one in Harrison and two in Monroe.
That brings the total Utica shale permits to 548.
A total of 255 wells have been drilled and 74 wells are in production.
A total of 33 drilling rigs are working in Ohio.
Locally, two wells in Stark County are in production: in Marlboro and Osnaburg townships. There are 13 wells permitted.
Two wells in Portage are in production: in Suffield and Windham townships. A total of 14 wells are permitted in Portage.
One well in Wayne County is in production: in East Union Township. That's the only Utica well in the county.
One well in Medina County's Harrisville Township has been drilled and plugged. That's the only Utica well in the county