Bull Run, Big Sandy dam construction
Bull Run, Big Sandy dam construction
Bull Run, Big Sandy canal excavation
Bull Run, Big Sandy Dam, end of tunnel
Bull Run, Big Sandy tunnel construction
Bull Run, Big Sandy dam construction
Bull Run, Big Sandy dam construction
Bull Run, Big Sandy dam canal excavation
Bull Run, Big Sandy canal excavation
Bull Run, Big Sandy bridge
Bull Run, Big Sandy gravel pit and bunkers
Bull Run, Big Sandy dam construction
Bull Run, Big Sandy Dam grade for flume
Bull Run, Big Sandy flume entrance to tunnel
Bull Run, Big Sandy dam construction
Bull Run, Big Sandy dam construction
Bull Run, Big Sandy Dam canal and flume construction