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.
I spent Wednesday with Chesapeake Energy Corp. officials on a field trip to Stark, Carroll and Columbia counties.
Here are a few tidbits from the day-long trip.
1. Chesapeake typically lays its horizontal wells that are hydraulically fractured or fracked in a northwest-southeast direction.
2. Chesapeake today produces 8.3 percent of America's natural gas.
3. It has seven rigs in eastern Ohio and one in western Pennsylvania. That number is expected to grow to 20 by late 2012 and to 30 by 2014.
4. What is going to happen in Ohio will likely be very similar to what's already happened with the Eagle Ford shale in southeast Texas, company officials said.
5. It has drilled 30 horizontal wells in Ohio and the firm is starting to place multiple wells at the same well pad. Each horizontal well gets its own vertical well. They won't share. The vertical wells will be 14 to 18 feet apart on the same drilling pad.
6. It is still too early to tell what's happening in Ohio. The company will have a better idea after 100 wells are drilled. It is attracted to the natural gas that is being produced, along with ethane, butane and propane. Natural gas prices are low, but the so-called wet gases are very lucrative.
7. The company has outgrown its Canton office. Its has moved workers into a second location: the old American Red Cross building in downtown Canton. There are about 200 workers in downtown Canton, plus 100 staffers who specialize on leases working out of space in Green. The company is seeking a location for its new regional field office.
8. Chesapeake expects to spend $75 million on road repairs in Ohio in 2012.