Softcover, 72 pages, standard portrait format, B&W images and technical data.
Contents:1020 1/2 yard Covertable Machine, pp. 4-25,120-B 4-Yard Electric, Steam Revolving Shovel: A Big Output Machine for Ore and Rock Loading, pp. 26-52,Class 200 17 1/2 Railway Crane, pp. 53-64,Bucyrus 14-B Revolving Shovel: Bulletin C-142, pp. 65-72.
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