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 Linda Harris of the Steubenville Herald-Star on Aug. 16:
MarkWest Energy Partners is operating a small temporary natural gas processing plant it built in Harrison County to accommodate one of its gas producers.
MarkWest Chief Operating Officer John Mollenkopf said Arrowhead, a refrigeration gas processing mini-plant located about 15 miles from Cadiz, came online just a few days ago.
It is capable of processing 40 million cubic feet of gas per day until the full-sized plant is done.
"It's an interim plant for one of our producers. They'll bring some of their gas to Arrowhead," he said during a community barbecue the company hosted Aug. 15.
MarkWest is investing more than $500 million in gas processing and fractionation plants in the Cadiz area --- full-sized projects that Mollenkopf said should be up and running very soon.
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