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Panama Canal Emergency Dam across Lock Operation of Lowering Plates Old PostcardVintage Old Colour Postcard. Panama Canal. Emergency Dam across Lock, showing operation of lowering plates to close flow of water in case of accident to Locks. / The emergency dams are erected at lock approach to protect the lock gates, should fender chain be insufficient. The huge steel construction can be swung across the lock, and by means of a series of Wicker-Girders being let down gradually, the flow of water can be cut off.Publisher: Vibert & Dixon Kodaks Magazines etc. Panama Item sold. You can either request an email alert for similar items, browse in our stock or search our stock.
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