Workmen use buckets to drain water from the section walled off by the cofferdam in order to secure foundations for construction.
Ramelli, Agostino. “Plate 111: Cofferdam Used to Drain Relatively High Water.” In Le Diverse Et Artificiose Machine Del Capitano Agostino Ramelli. Paris, France, 1588. https://digital.sciencehistory.org/works/wd375w55t.
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