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:
Authorities are investigating a fire that damaged several trucks at a natural gas well site in West Virginia's Northern Panhandle.
Media outlets report that the fire occurred around 5 p.m. Monday at a Chesapeake Energy well site in the Wellsburg area in Brooke County.
The trucks are owned by a subcontractor, FTS International.
FTS International spokeswoman Pam Percival says the well site was evacuated and no one was injured.
Firefighters from departments in Brooke County and western Pennsylvania extinguished the fire.