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 U.S. Department of Agriculture will continue to exclude rural housing loans from environmental reviews that could slow the expansion of oil and gas drilling.
Agriculture Secretary Tom Vilsack said today he will authorize a notice affirming that rural housing loans are categorically excluded from reviews under the National Environmental Policy Act, which requires some transactions to be examined for their affect on soil, air and water.
Vilsack said Agriculture will not change its policy, Bloomberg News reported.