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.
Chesapeake Energy Corp. has released a new report by a consulting firm that looks at drinking water in Pennsylvania's Bradford County and finds no links between natural gas drilling and water impacts.
The 360-page study was done for Chesapeake Energy by Weston Solutions.
Weston Solutions drew split samples from 15 Bardford County drinking water wells that were being collected and tested by the U.S. Environmental Protection Agency in late 2011.
The agency is conducting a mult-year study of hydraulic fracturing or fracking and drinking water.
A preliminary analysais is due out in late 2012 -- with a final report scheduled to be released in 2014.
That assessment includes a detailed look at ground water and drilling in five areas including Bradford County, where Marcellus shale drilling has been heavy.
The study concludes the 15 sampled wells in Bradford County "have not been impacted by Marcellus shale natural gas development activity -- including hydraulic fracturing," Weston Solutions concluded.
That assessment, if backed up elsewhere, would be a big boost to the drilling industry.
You can read more including the full Weston Solutions' report by clicking here.