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 the Associated Press:
Wyoming environmental groups are appealing a district judge's decision that ingredients used in fracking can be protected under the state's trade secrets law.
The Casper Star-Tribune reported Wednesday the group, which includes the Powder River Basin Resource Council and the Wyoming Outdoor Council, appealed the decision by Natrona County District Judge Catherine Wilking to the Wyoming Supreme Court.
Hydraulic fracturing, or fracking, is a process wherein water, chemicals and sand are pumped below ground to break rock and free trapped oil and natural gas.
In March, Wilking sided with energy industry attorneys who argued reverse engineering and industry competition make proprietary information worth protecting. A date for possible arguments before the Wyoming Supreme Court has not been set.