Chicago : Engineering and Contracting Pub. Co. · leaf 64
Fig. 2—Drag-Line Excavator. … ENGINEERING & CONTRACTING Vol. XXXVI. No. 2. matter of adjustment to stage of river. Forthis purpose a double-track movable bridgewill be constructed operating on a double-track incline laid on a 3 per cent grade. Theincline will extend into the river a sufficientdistance to support the…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
