E/MJ : engineering and mining journal . The completion of the McClure plant, which supplies5,000 hp., secured for the Cleveland-Cliffs company a *New Hydro-Electric Development on Dead River, Michigan,Eng. and Min. Journ., Aug. 17, 1918. is 200 ft. long, and a 200-ft. section placed 4 ft. abovethe spillway proper serves as an overflow space if ex-cessive water should raise the level to this height. Thissection terminates in a rock bluff at the south end ofthe dam, and on the north end a core wall 6 ft. higherthan the highest part of the spillway and 100 ft. inlength extends into the bank. The
E/MJ : engineering and mining journal . The completion of the McClure plant, which supplies5,000 hp., secured for the Cleveland-Cliffs company a *New Hydro-Electric Development on Dead River, Michigan,Eng. and Min. Journ., Aug. 17, 1918. is 200 ft. long, and a 200-ft. section placed 4 ft. abovethe spillway proper serves as an overflow space if ex-cessive water should raise the level to this height. Thissection terminates in a rock bluff at the south end ofthe dam, and on the north end a core wall 6 ft. higherthan the highest part of the spillway and 100 ft. inlength extends into the bank. The core wall has thesame cross-section as the main dam, and is providedwith a 7-ft. diameter opening through its entire opening is provided with screen and stoplog spacesat the point where the core wall joins the main dam. 458 Engineering and Mining Journal Vol. 108, No. 11. September 13, 1919 Engineering and Mining Journal 459 and at the other end there is a 7-ft. pivot valve con-nected to the pipe line. In the construction of the dam, which was built bythe Foundation Co. of New York, under a cost-pluscontract, 17,000 of concrete was used. Its heightis 50 ft. from the foundation, the width in solid con-crete at the base is 50 ft., and this tapers to 4 ft. at thetop of the spillway. In spite of the extremely unfavor-able winter during 1917-1918, remarkable progress wasmade, and there was little or no interruption in theconstruction work. Seven-foot Diameter Pipe Line to Power HouseSeparated by an interval of 80 ft. from its juncturewith the dam is a 13,600-ft. pipe line that extends tothe power house, which is built at a point where Rainy J-in. iron, spaced 2 in. A 7-in. diameter steel pipewhich completes the remaining 3,600 ft. to the powerhouse varies in thickness from one-half to three-quar-ters of an inch and was made by the Walsh SteamBoiler W
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
