
Parker Schings, a senior project manager with GPRS, uses GPS to document where utilities are located at a Toledo Edison sub station near Woodville, Ohio. (Photo by J.D. Pooley)
Four hundred of 700 employees at Toledo, Ohio’s GPRS (which stands for Ground Penetrating Radar Systems) are in the field. They are pushing or carrying ground penetrating radar units and searching for unseen obstacles that contractors dearly want to avoid finding with their...