Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry (1921)
Wright, Roydon Vincent, 1876- ed, Little, John G., joint ed, Augur, Robert C., joint ed · New York, N.Y., Simmons-Boardman Publishing Co · leaf 227
ould be secured at the highest available point below thetop of the mast, but, if possible with the guy lines abovethe top of the boom when at its highest working point sothat the derrick may be free to swing in a full circle with-out unnecessary lowering of the boom. When this condi-tion is… … teaais^::?9iWii^4>Z4¥i J&QLJrSlI^i>
Hoisting machinery · Conveying machinery
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
