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Anaconda smelter, Montana. Anaconda Copper Mining Company. Returning the first slag from the converter to the reverberatory furnace. The first few ladles of slag always contain some copper, and to redeem this copper the slag is returned to the furnace by Russell Lee
Anaconda smelter, Montana. Anaconda Copper Mining Company. Returning the first slag from the converter to the reverberatory furnace. The first few ladles of slag always contain some copper, and to redeem this copper the slag is returned to the furnace by Russell Lee
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