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.
U.S. energy companies should report information on waste water from hydraulic fracturing or fracking to help federal agencies reduce the risk of earthq2uakes like those that have hit the Youngstown area in the last year.
"We do need help from industry," said Marcia McNutt, director of the U.S. Geological Survey.
"There is not good public information on the amount of water being pumped and the rate at which it's pumped," she told Bloomberg News.
Some states including Ohio require that volumes of wastes being injected are reported, and some drillers voluntarily provide such data, USGS officials said.
The agency has no authority to impose additional reporting requirements.
Less than 1 percent of injection wells trigger earthquakes, McNutt told a congressional committee.
Getting more information would help reduce the quake risk in a year or two, McNutt said.
"It's a very solvable problem," she said on Thursday. "You either have to put the holes in a different place or pump it at a different rate."
The Youngstown quakes have been linked to an injection well in Youngstown Township that was volntarily closed on Dec. 30. A dozen quakes have been linked to the well.