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.
An Ohio legislative subcommittee is holding a public hearing on a Youngstown injection well and 11 earthquakes on Tuesday, Jan. 17, in Youngstown.
The hearing of the House's Natural Resources and Agriculture subcommittee will be held at 10 a.m. in the Chestnut Room at Youngstown State University's Kilcawley Center.
The meeting was arranged by state Rep. Sean O'Brien, D-Brookfield.
An injection well in Youngstown Township has been linked to 11 earthquakes since last March. The largest quake, a 4.0-magnitude quake, rocked Northeast Ohio on Dec. 31.
That was one day after the D&L Energy Group, the owner of the well, agreed with Ohio Department of Natural Resources to voluntarily shut down the injection well.
The well was used to inject drilling wastes under pressure for permanent storage in underground rock formations.
The investigation into the quakes and injection well is continuing.