Ohio's shale counties have seen a 21.1 percent increase in total sales activity in 2012, according to a Cleveland State University study.
That fact surfaced recently as a conference organized by the National Academy of Engineering in Cleveland.
But the numbers warrant a closer look.
Sales in 13 Ohio counties stretching from Ashtabula to Guernsey were $14.9 billion in 2012, up from $12.3 billion in 2011, the study said.
The counties are Ashtabula, Belmont, Carroll, Columbiana, Coshocton, Geuaga, Guernsey, Harrison, Mahoning, Portage, Stark, Trumbull and Tuscarawas.
The rebound in sales activity in the 13 counties began in mid-2011 and continued strongly through 2012, the study says.
Job growth in those 13 counties has been far slower,about 1.4 percent, the study says.
That job growth rate is comparable to the rest of the state, the study said.
The study does not offer a look at the 13 individual counties, just the region. But county-by-county totals on sales and use tax collections are available from the Ohio Department of Taxation.
Harrison County saw its tax collections jump 33 percent: from $1,496,851 in 2011 to $1,988,873 in 2012.
Carroll County saw its sales tax income grow by 31 percent from 2011 to 2012. It climbed from $2,009,558 to $2,627,854.
Those are the two Ohio counties where the drilling for natural gas and liquids from Ohio's Utica shale is the heaviest.
Guernsey County climbed 13 percent from $6,185,035 in 2011 to $6,991,330 in 2012.
Belmont County increased 12 percent from $11,904,166 in 2011 to $13,320,872 in 2012.
Columbiana County increasde 10 percent from $13,359,749 in 2011 to $14,680,506 in 2012.
Jefferson County increased 8 percnet from $10,069,882 in 2011 to $10,837,108 in 2012.
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.