01217cam a22002651 4500 gs 21000207 DLC 20260227111325.0 771004s1920 mnuabdf 000 0 eng gs 21000207 (OCoLC)3315737 DLC UU DLC premarc TN24.M5 A6 American Institute of Mining, Metallurgical, and Petroleum Engineers. Handbook of mining in the Lake Superior region. Prepared for the Lake Superior meeting of the American institute of mining and metallurgical engineers held in August, 1920. Section one, by Alexander N. Winchell ... Section two, by Engineers club of northern Minnesota, and Duluth engineers club. [Minneapolis, Press of Byron & Learned company, 1920] 2p.l.,vii-xvi, 260 p. incl. front. (port.) illus.,plates. fold. maps, diagrs. 23cm. Mines and mineral resources Superior, Lake. Iron mines and mining Superior, Lake. Copper mines and mining Superior, Lake. Winchell, Alexander Newton, 1874-1958. Engineers' Club of Northern Minnesota. Duluth Engineers' Club. 26096 26096