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.
Federal officials have called a 1 p.m. press conference today to announce federal charges in the Youngstown waste dumping case involving Ben Lupo of Hardrock Excavating.
Drilling wastes were dumped into a storm sewer that drained to the Mahoning River on Jan. 31.
Lupo told state officials he ordered the dumping and said it has been done a number of times since last September, the agencies said.
At least 252,000 gallons may have been dumped, officials said.
The state of Ohio has terminated operating permits for two of Lupo's companies:the D&L Energy Group and Hardrock Excavating.
More details later.
In addition, Lupo has a closed-door hearing today with the Ohio Department of Natural Resources to appeal the revocation of his firms' operating permits.
Click here for more details from WKSU-FM.