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The Atlantic to the Pacific: What to See and How to See it (1873), by John Erastus Lester


ORES PURCHASED AT BOSTON AND COLORADO SMELTING WORKS.

The Boston and Colorado Smelting Company—better known as Prof. Hill’s—at Black Hawk, during 1872, purchased the following amounts of ore: From Clear Creek County, 2,100 tons, for which $320,000 were paid; from Gilpin County, 6,950 tons, for which $178,000 were paid; and from Park County, 600 tons, for which $88,000 were paid; making a total of 9,650 tons, and $586,000. This amount of ore was reduced to 640 tons of matte, which was shipped to Swansea, Wales. The average yield of the ore treated in 1871 was $80 per ton; and, estimating it at the same this year, the product of the works for 1872 have been $788,000. This would give an average value to the matte of about $1,230 per ton.



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