656 



GEOLOGY AND MINING INDUSTRY OF LEADYILLE. 



Smklter G. 

 Smeltiiiy charges tnade in Aiit/iiisl, 1880. 



Cha 



' (ore .ind flux), 767 pounds. Smelting charge (ore, flux, and fuel), 927 pounds 



In the pieced iug charge the i)roportioiis are- 



Flns to 010 



Fuel to ore 



Fuel to charjje 



Average charge deduced from data given in TaNe IV. 



•2-i 

 ■2li 



171 



Charge (ore and flux), 803 pounds. Smelting charge (ore, flux, and fuel), 956 pounds 



In tbe average cLarge the proportions are — 



Flux to ore -- 



Fuel to ore 



Fuel cbarge 



19 



At tbis smelter the fuel is measured by the shovel. 



Smelteu H. 



Smelting cliaryes made in Angnst, 1880. 

 No. 1. 



Charge loie and flux). 705 pounds. Smelting charge (ore, flux, and fuel). 835 pounds 

 No. 2. 



I 



Ore, 550 pounds. 



Ore-bed 500 



Adelaide ore 50 



Flux, 155 pounds. 



Fuel. 130 pounds 



Dolomite 35 Charcoal 110 



Old slags 120 Coke 20 



Charge, 705 pounds. Smelting charge, 835 ponnds. 



