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.
In the greater Akron area, Stark County ranked first in shale-related drilling leases in 2011.
The county had 4,563 natural gas-oil drilling leases filed. That's up from 1,113 in 2010.
The communities with the most leases are:
Lake Township, 677.
Lexington Township, 573.
Washington Township, 553,
Paris Township, 400.
Marlboro Township, 263.
Pike Township, 240.
Osnaburg Township, 214.
Canton Township, 201.
Perry Township, 186.
Sugar Creek Township, 162.
Sandy Township, 151.
Nimishillen Township, 146.
Plain Township, 137.
Bethlehem Township, 113.
Jackson Township, 98.
In addition, there were 104 leases in Alliance, 117 in Massillon, 12 in Canton and 36 in the village of Brewster.
Leases also increased in 2011 in Portage, Medina and Wayne counties.
You can check out the recent Akron Beacon Journal story here.