Sorel. MS of direction sign "Marine Industries". Shots inside plant grounds, TRAVELLINGS, PANs, of ships moored to wharves, of harbour cranes, of shipyards with ships being built, of grain elevator. BOATING SHOTS of waterfront, boats tied up, harbour installations. Interior shot of foundry, men pouring molten metal. Shot of newly made field gun being wheeled out of plant past camera. CU of whirling spindle of large machine tool, operator in background. CU of turning gears. Three HAMLSs of workers leaving shipyard, plant after shift.