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¥ ais tre Le wee ie x sea' "Se ¥ Ee --3r' hed _ a." P é vi NEERS' NUMBER > ts me | VOL. KXXII. CLEVELAND, DECEMBER 7, 1905. NO. 2a: Dunbar & Sullivan Dredging Co. BUFFALO, N. Y. Ready for Spring A New Tool A REVOLVING GLAMSHELL DREDGE which will do the following impossibilities to the ordinary dredge: Excavate 60' back from face of dock into scow or vice versa; Excavate at either end of itself and dump in scow at other end. This makes through cutting and cleaning narrow strips cheaply possible. Excavate trenches to 150! or more depth. Excavate material, and throw it one side 150' from original site where there is four feet of water between dump and channel. Excavate shallow channels down to 4! x 44!. Clean out boulders or obstructions without disturbing surrounding bottom. Excavate close to docks without injury to dock. Anything that ordinary derrick will do up to 10 tons at 75! radius. ' This is an excellent wrecking tool.