Professional Memoirs, Corps of Engineers, United States Army and Engineer Department at Large, Volumes 1-5

anchors army artillery attack bank battalion boats bridge cable caissons canal Celilo Celilo Falls cent channel coffer cofferdam command concrete construction Corps of Engineers cost cover crest crevasse cross section curve Dalecarlia Reservoir defense depth discharge dredge drill elevation embankment enemy excavation feet field firing trenches flank flood foot front gage gauge Georgetown reservoir glass mirror ground guard lock guns Harbor Harlem River height Hell Gate high water hour improvement inches infantry Island jetty levee lift lock light Little Hell Gate low water lower material maximum metal mirror miles Mississippi Mississippi River Mobile Mobile River navigation necessary observation officers Ohio River operations piles pivot placed Plate Ponts et Chaussées position projectors protractor rear reservoir riprap rock sand search-lights segmental mirror shoals shown side slope storm surface tactical Tennessee River tidal tide tion trestle troops upper velocity wall weir width