International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 423
inchthick; five-eighths inch bolts with countersunk heads fas-ten the inner guides to the main sticks and at the same timesecure the iron work to the same. The bottoms of the leaders 1012 RAILROAD CONSTRUCTION. are connected with the 12 X 12-inch bed pieces o by twotimber knees not shown, and are… … 9 / yt)^ B
Railroad engineering
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