Edge Oilfield Services Closes Zanesville, OH Office Industrywide Issues | Key Energy | Muskingum County | Ohio November 26, 2012November 26, 2012 An oilfield services business that opened a branch office in Zanesville (Muskingum County), Ohio in January to service Utica Shale drilling in the area has now closed the office. Why? Please Login to view this content. (Not a member? Join Today!) Related