Here are Ohio's Top 10 oil-producing counties in calendar year 2013, from the Ohio Department of Natural Resources:
1. Carroll County, 1.8 million 42-gallon barels.
2. Harrison, 1.1 million barrels.
3. Guernsey, 323,184 barrels.
4. Noble, 270,875 barrels.
5. Columbiana, 80,411 barrels.
6. Monroe, 41,231 barrels.
7.Trumbull, 24,822 barrels.
8. Belmont, 21,200 barrels.
9. Stark, 15,382 barrels.
10. Washington, 12,038 barrels.
Local county, Portage is 14th with 1,565 barrels.
A total of 16 Ohio counties reported producing oil in calendaryear 2013. The others are Tuscarawas, Muskingum, Mahoning and Coshocton.
With thanks to co-worker Rick Armon.
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.