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.
Reports from Washington, D.C., are that President Barack Obama has nominated Sally Jewell to be the new Secretary of the Interior.
Jewell is CEO of the outdoor and recreational retailer REI, a clothinmg co-op.
She would replace Ken Salazar and could play a leading role in determining federal policy on drilling on public lands in the West and in offshore drilling.
Jewell was formerly a petroleum engineer.