• Employment rose 17 percent in core shale industries — pipeline construction and well drilling — between early 2011 and early 2012. Meanwhile employment in ancillary industries — freight trucking, environmental consulting — increased 3.1 percent.
• Average salary in core shale industries was $73,934 per year, while ancillary industries average $58,765 annually.
• New companies came to Ohio between January 2011 and January 2012. There were 16 oil and gas drilling and six natural gas liquid extraction companies, five oil and gas pipeline builders and nine businesses offering oil and gas industry services.