Public domain
Defense housing, Erie, Pennsylvania. This excavator can dig foundation for two four-unit buildings in eight hours, an operation that would require several days by hand. Foundations go down five feet for cement support blocks. The ground between the foundation blocks is later forked preparatory to re
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineDefense housing, Erie, Pennsylvania. This excavator can dig foundation for two four-unit buildings in eight hours, an operation that would require several days by hand. Foundations go down five feet f. 1941-01-01. United States. Office For Emergency Management, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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