E/MJ : engineering and mining journal . MESSITER BEDDING SYSTEM AT CALUMET & ARIZONA SMELTERY. DOUGLAS, ARIZ. Bedding of ores, formerly onlv practiced bv lead smelters, has become popular among copper smelters, particularly inthe Southwest. The accompanying views, beginning at the right, show the ore bed formed, being reclaimed with aMessiter machine and the bed completely OPENPIT OF THE GRANBY CONSOLIDATEDS COPPER MINE AT PHOENIX. B. openpit is being worked by an electric shovel—a Bucyrus 40-R. The pit has been widened to permit theuse of two divergent tracks which reduce d
E/MJ : engineering and mining journal . MESSITER BEDDING SYSTEM AT CALUMET & ARIZONA SMELTERY. DOUGLAS, ARIZ. Bedding of ores, formerly onlv practiced bv lead smelters, has become popular among copper smelters, particularly inthe Southwest. The accompanying views, beginning at the right, show the ore bed formed, being reclaimed with aMessiter machine and the bed completely OPENPIT OF THE GRANBY CONSOLIDATEDS COPPER MINE AT PHOENIX. B. openpit is being worked by an electric shovel—a Bucyrus 40-R. The pit has been widened to permit theuse of two divergent tracks which reduce delays. Drilling and barring down is done in one part while shoveling isproceeding in the other. This is described more in detail on p. 979 of this issue. I lei i mbi c ?. L916 ENGINEERING \\l> v l.: (i .101 i:\.\L
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
