ARNOLD AIR FORCE BASE, Tenn. (AP) -- Workers are looking underground for unexploded munitions in the woods at Arnold Air Force Base in Tennessee.
Similar work last year was done above ground. Now mortars, projectiles and rifle grenades are being found between 4 and 12 inches under the surface, topped by a layer of clay.
The munitions date back to the 1940s when Arnold was the site of the U.S. Army's Camp Forrest. They have been found in areas that were used as impact areas or practice ranges.
Currently there are three areas where the underground work is focused. The Corps of Engineers manages the program, with Bay West the subcontractor on the project.