01188cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040001700111042001200128050001600140110007400156245030100230260006000531300009100591650004900682650004300731650004500774700004400819710004300863710002800906gs 21000207 DLC20260227111325.0771004s1920    mnuabdf       000 0 eng    ags 21000207   a(OCoLC)3315737  aDLCcUUdDLC  apremarc00aTN24.M5bA62 aAmerican Institute of Mining, Metallurgical, and Petroleum Engineers.10aHandbook of mining in the Lake Superior region.cPrepared 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.  a[Minneapolis,bPress of Byron & Learned company,c1920]  a2p.l.,vii-xvi, 260 p.bincl. front. (port.) illus.,plates. fold.  maps, diagrs.c23cm. 0aMines and mineral resourceszSuperior, Lake. 0aIron mines and miningzSuperior, Lake. 0aCopper mines and miningzSuperior, Lake.1 aWinchell, Alexander Newton,d1874-1958.2 aEngineers' Club of Northern Minnesota.2 aDuluth Engineers' Club.