Subject files -- Chapter 10 FPO

Included: Photographs of various tunneling projects including Central Arizona Project, Buckskin Mountain Tunnel, NORS portal shaft, Greenbelt Route Tunnel, and a tunnel in Chicago. Other photographs include boring machine model 1010-179, 233-172, a grading operation on Interstate 5, north of Redding, California, Jim and Peter Shea. There are seven negatives and eight slides