THE CALUMET AND HECLA COPPER MINE. BY WILLIAM P. =BIB. Origin of Tattooing. METHOD OF TIMBERING IN THE CALUMET AND HECLA COPPERLINE 4850 FEET BELOW GROUND. 4000 HORSE POWER TRIPLE EXPANSION HOISTING ENGINE CALUMET AND HECLA COPPER MINE., scientific american, 1896-09-19
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