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:
A Pennsylvania firm has opened a new plant to treat and recycle wastewater generated by Marcellus shale natural gas drilling.
Aquatech International Corp., which is based in Canonsburg, says the new plant opened in Tioga County on Wednesday. That's in northeast Pennsylvania near the New York border.
The company says the Tioga facility has a central treatment plant that uses a combination of technologies to treat drilling fluids, the highly salty brine that flows back from wells, and other oil and natural gas wastewaters.
Critics of gas drilling, or fracking, are concerned about the huge amounts of wastewater generated by a recent drilling boom.
Treated wastewater can be reused in other wells, thus reducing the amount of fresh water that drillers use to fracture, or stimulate, well production.