GOLD MINING IN COLOEADO. 



585 



for their treatment, will soon be built. Such ores are purchased at the works 

 according to an established scale of prices, which, as it does not differ much 

 from a similar schedule fixed by the Georgetown Smelting Works, and given 

 in the following chapter, need not be repeated here. 



The following table, prepared from data furnished by Professor Hill, 

 shows the average contents, in gold, silver, and copper, of various lots of ore 

 produced from different mines, and sold for smelting: 



From what lode. 



Bobtail . . 

 Bobtail . . 

 Bobtail . . 

 Bobtail . . 

 Bobtail - . 

 Fiske - . . 

 Gregory - 

 Gregory . 

 Gregory . 

 Gregory . 

 Bates-Hunter 

 Burroughs 

 Burroughs 

 Burroughs 

 Gardner . 

 Illinois 

 California 

 Coaley . . 

 Veto . - . 

 Prize . 



From what mine. 



Bobtail .... 

 Black Hawk . . . 



Trust 



Sensenderfer ... 

 Sterling .... 

 Sterling .... 

 Narragansett 

 Gregory Consolidated 

 Briggs .... 

 Smith & Parmelee . 



Ophir . . . 

 Gilpin ... 

 First National 

 Clark . . . 

 North Star . 

 Stalker's . . 

 Coaley . . 



S 



3 



2; 



464 

 II 



65 



2 



146 



12 



18 



8 



136 



28 



12 



230 



178 



20 



38 



65 



424 



73 

 31 

 95 



o 2 

 o 



u U) 



(U 

 ^ ID 



CD (U 



bo u 



a c 



> o 



a 

 o 



a, 



4.78 

 5-25 

 5.10 

 11.00 

 5-82 

 5.00 

 2.25 

 4-25 

 5-25 

 3-46 

 3-25 

 4.85 

 4-25 

 3-75 

 3.84 

 3-25 

 2.89 



2.00 



o 



S 

 3 

 c 



bo 

 a 

 i-i 



> 



a 

 o 



a, 



8.00 



7.00 



7-50 



15.00 



6.65 



7.00 



7.00 



10.00 



10.50 



12.00 



10.00 



10.00 



8.50 



g.oo 



11.26 



15-50 



18.00 



215.00 



270.00 



25.00 



o 3 

 a -a 



0) u 



&, 

 o 



> 



< 



6.37 



7.50 



2.50 

 10.50 

 5-70 

 9-30 

 9.00 

 3-50 



2.00 



The works of the Boston and Colorado Smelting Company were built 

 during the summer of 1867, and begun smelting operations in February, 1868. 

 Since that time their capacity has been largely increased, and, during the past 



year, was quite equal to, if not a little in excess of, the supply of ore. They 



74- • 



