International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 358
Fig. 439. Fig. 440. … Fig. 441. Fig. 442. given in Fig. 438. The cut and side rounds are loaded atthe same time. The cut is fired first (see Fig. 439), followed 948 RAILROAD CONSTRUCTION. by the side rounds, Avhich are fired either single, i. e., onerow on each side of the cut (see Figs. 440 and 441), ordouble fired, i.…
Railroad engineering
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