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.
From Bricker & Eckler, a Columbus law firm with a Utica shale blog:
The village of Barnesville in Belmont County has signed a lease with Antero Resources to lease 1,047 acres of village-owned land.
Barnesville is getting $5,700 an acre plus a 20 percent royalty on any product produced.
The deal is expected to generate between $5.5 million and $6 million.
The village has 4,100 residents.