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 Business Journal reports that BP Energy will soon start drilling in Trumbull County.
The Journal reports: "The first three applications for test wells related to BP Energy's oil and gas exploration in Trumbull County show that the energy giant is assessing an area just east of Mosquito Lake before its drilling program begins in April, according to state records.
"Brammer Engineering, a gas-and oil-services company based in Shreveport, La., has submitted three applications for test wells in Gustavus, Johnston and Kinsman townships, says data submitted to the Ohio Department of Natural Resources.
"BP spokesman Curtis Thomas reports that his company has contracted Brammer to work in its behalf in this area of the county."
Read the full story here.