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:
A landowners' group in northeastern Pennsylvania is threatening to sue the Delaware River Basin Commission unless it lifts a moratorium on gas drilling.
The Northern Wayne Property Owners Alliance says in a letter to the commission's executive director that it will sue unless the agency either schedules a vote on regulations that would allow drilling to begin, or steps aside and drops any plan to regulate the practice.
The commission monitors the water supply of more than 15 million people, including Philadelphia and half the population of New York City. It has banned Marcellus Shale drilling in the four-state basin until it approves rules governing the process.
The landowners' group says it's in jeopardy of losing its lease with two gas companies unless the regulatory agency drops the ban.