• Allen Boyer McDaniel: Excavation, machinery, methods and costs, including a revision of "Excavating Machinery", New York, McGraw-Hill, 1919
  • Robert J. Marsh: Steam shovel mining, including a consideration of electric shovels and other power excavators in open-pit mining, 1920

Zeitschriften

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The Excavating Engineer

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Band 20 - 1926

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Dry Land Digging - Yesterday and today. A Brief Illustrated Outline of the Main Developments in the Industry of Mechanical Excavation from Time of the Early American Steam Shovel to Date

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