Image:Panama Canal Locks Construct.jpeg
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Panama_Canal_Locks_Construct.jpeg (464 × 424 pixels • taille du fichier : 40 ko • type MIME : image/jpeg)
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[edit] Summary
The Panama Canal locks under construction, in 1910. The partly-constructed middle wall is shown here; the large pipe near the bottom is the culvert used to carry water into the locks. The man standing below and right of it illustrates the scale.
From The Panama Canal, An address to the National Geographic Society, by Colonel Goethals, February 10, 1911.
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