698 



GEOLOGY AND MINING INDUSTRY OF LEADVILLE. 



Bullion production in Table IX are given tbe aim unit and value of gold, silver, 

 and lead produced at the different smelters in the month of December 1880 ; also, ii> 

 the last column, the value of the total product for the year 1880. 



TABLE IX. Bullion production. 



SLAG. 

 Fire assayt oftlag, made by J. E. Hardmaii in J/i-cA, I--' 1 



Fire assays made at the California smelter on California smelter slag from February to May, 1880, by J. E. 



Hardman. 



Silver assays of Malta-smelter slag, made by Robert Bunsen. 

 Silver, from 10 to 17 ounces to the ton. 



