Heavy machinery like this Bucyrus Shovel (Model 60) sped up road construction. Such shovel machines were typically powered by steam, although by 1920 some were being powered by electricity. Identification Number: F3790:103
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Details
Title: Heavy Machinery in Early Highway Construction
Creator: Records of the Department of Public Works, Division of Highways, District VII
Date Created: 1915-03-17
Location: Los Angeles County
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