A interesting milestone: Chesapeake Energy Corp. is marking its second anniversary of starting to drill in Ohio's Utica shale.
The Oklahoma-based energy company began drilling or spudding its Buell well in Harrison County in December 2010.
It was one of the first wells drilled in Ohio and was at one time the biggest-producing well in Ohio.
Today, Chesapeake has drilled 134 wells and it intends to drill another 200 wells with its partners in 2013.
It has invested $3.3 billion in Ohio.
It is the No. 1 player in Ohio's Utica shale.
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.