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.
MarkWest Energy Partners LP has announced two deals related to development of the Marcellus shale, reports marketwatch.com.
The first covers a long-term, fee-based arrangement with affiliates of Chesapeake Energy to expand Marcellus gas processing capacity in a 185-square-mile area that includes portions of Brooke, Ohio and Marshall counties in West Virginia and Washington County in southwest Pennsylvania.
The second is a long-term, fee-based arrangement with Antero Resourcs to install significant gathering pipeline facilities in Doddridge and Harrison counties in northern West Virginia.
MakWest will expand its gas-processing facility at Moundsville with the addition of two cryogenic facilities, in exchange for Chesapeake's dedication of acreage to the Moundsville processing complex.
The new units are expected to be operational in late 2013 and mid 2014.
MarkWest had previously announced plans for Utica shale fractionation facilities in Harrison County in eastern Ohio.