Cleveland, Ohio, United States | Columbus, Ohio, United States | Dayton, Ohio, United States | Detroit, Michigan, United States | Huntington, West Virginia, United States | Indianapolis, Indiana, United States | Lexington, Kentucky, United States | Louisville, Kentucky, United States | Pittsburgh, Pennsylvania, United States. Responsible for providing technical support to operations management with respect to surveying, drilling and blasting, exploration, reserve evaluation, inventory management, and mine design for permitting and mine planning purposes.