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.
Frac Daddy did not win the Kentucky Derby.
But the three-year-old thoroughbred did win the support of Sarah Palin, a Derby guest in Kentucky. She even bet on Frac Daddy.
The horse owned by Montana petroleum geologist Cater Stewart and partner Ken Schlenker came in 16th out of the 19 horses in the field.
The odds on Frac Daddy winning were 50-1.
Its name comes from drilling term hydraulic fracturing or fracking.