American Institute of Mining, Metallurgical, and Petroleum Engineers creator Winchell, Alexander Newton 1874-1958 Engineers' Club of Northern Minnesota Duluth Engineers' Club text mnu Minneapolis Press of Byron & Learned company 1920] 1920 monographic eng

print

2p.l.,vii-xvi, 260 p. incl. front. (port.) illus.,plates. fold. maps, diagrs. 23cm. 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. Mines and mineral resources Superior, Lake Iron mines and mining Superior, Lake Copper mines and mining Superior, Lake TN24.M5 A6 gs 21000207 DLC 771004 20260227111325.0 gs 21000207