Megastructures examines the mega-machines used to run the Panama Canal and uncovers the canals five-billion dollar project for its expansion.\r
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MegaStructures - Panama Canal Unlocked (National Geographic Documentary) MegaStructures - Panama Canal Unlocked MegaStructures (National .\r
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MegaStructures - Panama Canal Unlocked (National Geographic Documentary) MegaStructures - Panama Canal Unlocked MegaStructures (National Mega.
