From the Associated Press:
A South Dakota-based company says it has secured silica sand mining claims in three Black Hills counties.
The Black Hills Pioneer reports that if Cambrian Enterprises' claims are mined, South Dakota will be the westernmost producer of silica sands in the U.S. It would also be the closest to the nation's largest silica sand consumers, the Bakken and Three Forks oil fields.
Silica sands are used in hydraulic fracturing, in which combinations of water, minerals and chemicals are pumped into shale oil and gas formations at high pressure.
Cambrian Enterprises says it has secured more than 600 acres of claims in Custer, Lawrence and Pennington counties.
Co-owner David Ganje says the company has been researching and reviewing the potential in western South Dakota for roughly a year.
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.