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 Canton Repository and the New Phiadelphia Times-Reporter both reported that one person was killed this morning in a well explosion near Bolivar.
The explosion occurred about 9:34 a.m. off state Route 212 near Kingwood Drive NE and Huffman Square NE south of Bolivar in northern Tuscarawas County.
The victim had not been identified, pending notification of next of kin.
Flames shot 50 feet into the air after the explosion.
Officials were investigating to determine the cause of the explosion.
The fire was under control by 11 a.m.