Dams Construction: Several CUs of large stationary drill on Arrow Dam construction site. PAN across floating crane. Shots of welder at work on large water conduit, of piles of conduits, not much activity. MS of tracks of bulldozer at work. Closer shots of large truck wheels. HAMLS of trucks on Arrow Dam construction site. MS of Cominco Dam. MSs of water cascading down, dam not visible in some shots.