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" "A RU ae ov THE DRAVO CONTRACTING Co. General Contractors, Lewis Building PITTSBURGH, PA. 7 Shaft Sinking, Tug River W. Va., Concrete Lined. Davis Island Back Channel Dam, Ohio River. _ RIVER WORK (Ahhs 49ck*), SHAFTS AND SLOPES, | - RAILWAY GRADING, ey eine TUNNELS, WATER WORKS, BRIDGE PIERS, ARCHES, ETC., ETC, POWER PLANTS, FOUNDATIONS, INTAKES, ) SUBMARINE WORK. We are thoroughly equipped to handle all details of construction. Warehouse, Foot of 22nd St., South Side.