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.
The Youngstown Vindicator on Saturday reported that Chesapeake Energy Corp. has joined a lawsuit against Columbiana County landowners who are refusing to permit seismic testing on their land.
The suit was initially filed by TSG NOPEC Geophysical Co. of Houston, which was to do the testing for Chesapeake under leases signed by the landowners.
The suit came after landowners refused to allow access.
Columbiana County Common Pleas Judge C. Ashley Pike ruled in April that Chesapeake was the affected party and needed to be part of the suit.
All but two landowners from Beloit have settled and agreed to allow the tests.
The case is pending.