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Digging the Spillway at Gatun Dam, Panama Canal Zone Partager

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Gold Hill on the Right and Contractor's Hill on the Left, Culebra Cut, Panama Canal Partager

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The Depth of the Culebra Cut as Excavated by the Year 1908 - Panama Canal Zone Partager

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Site of the Gatun Lock, Looking South from the Lowest Lock Towards Lake Gatun - Panama Canal Route Partager

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Bas Obispo Cut, Showing Battery of Rock Drills at Work, Panama Canal Route Partager

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