Public domain
Giant tire manufacturing. Construction of modern airports and other military facilities which requires moving large quantities of earth necessitates equipment identified as earth movers. Earth movers use huge rubber tires like these, some of which cost as much as $2,500 each. Goodyear, Akron, Ohio
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineGiant tire manufacturing. Construction of modern airports and other military facilities which requires moving large quantities of earth necessitates equipment identified as earth movers. Earth movers . 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.