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.
1. Crawford County in northwest Pennsylvania is getting its first Utica shale well.
Texas-based Range Resources has drilled the well in East Fairfield Township.
It goes to a depth of 7,236 feet and then runs a mile horizontally.
The hydraulic fracturing or fracking is under way.
2. Hilcorp Energy has made an appearance in Ohio, and the company is one man.
The firm has one stockholder: secretive Houston billionaire Jeffrey Hildebrand.
Hilcorp is believed to have oil and gas production in the order of 70,000 barrels per day in Texas, the Gulf of Mexico and elsewhere.
Forbes magazine says Hildebrand is worth an estimated $5.5 billion.
Hilcorp is involved in Ohio production and midstream activity. It is partnering with NiSource on drilling ande pipelines in the Utica shale.
3. Is the Marathon Oil Corp. exiting the Marcellus shale?
That rumor is out there, says the Marcellus Drilling News.
Live Trading News reports that Marathon may be trying to sell off 80,000 acres in the Marcellus shale in West Virginia and Pennsylvania in an an effort to trim back on "non-core" assets.
Low natural gas prices and an overabundance of supply may have influenced Marathon's decision.
4. A new major pipeline has been proposed to transport natural gas liquids from western Pennsylvania to the now-closed Marcus Hook refinery near Philadelphia.
The Mariner East pipeline is planned by Sunoco Logistics Partners.
Range Resources and MarkWest Energy Partners have both said they are committed to the Mariner East project.
All existing pipeline capacity has been booked, officials said.
The closed refinery will be equipped to process propane and ethane from the Marcellus shale in Pennsylvania and other states.