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.
The Muskingum Conservancy Watyershed District on Friday signed its third lease with a natural gas-drilling company.
The deal with Texas-based Sierra Buckeye covers 185 acres near Dover Dam in northern Tuscarawas County.
The district will get a signing bonus of $4,500 an acre or about $832,500, plus a 20 percent royalty on oil, natural gas or other materials produced by wells.
The district does not own the land but does own the mineral rights on the 185 acres.
The owners of the surface rights already have a deal in place with the company.
In April, the district approved a lease on 3,700 acres at Leesville Lake in Harrison County for $21.5 million.
Last year, the district signed a lease worth $15.6 million on 6,400 acres at Clendening Reservoir in Harrison County.