SMELTIXG CHARGES AT IXDIVIDDAL SMELTERS. 



1355 



111 the precediug siiieltiug charge the proportious are — 



Flux to ore 26J 



Fuel to ore 24^ 



Fuel to charge 19i 



Average charge dcihicel from data given in Table IV. 



Charge (ore and flnx), 366.6 pounds. Smelting charge (ore, flux, and fuel), 461.5 pounds. 



Ill the average smelting charge the proportions are — 



Flux to ore 29 



Fuel to ore 25 



Fuel toiharse lOJ 



The general rule observed at this smelter is the following: The ore is made to 

 coutaii) 30 per cent, of gangue, 30 per cent, of iron, and 20 per cent, of lead, and the 

 charges are smelted with 20 per cent, of fnel. 



8mki,ter F. 



SniiHing charges made in August, 1880. 



Charge (ore and flux). 780 pounds. Smelting charge (ore, flux, and fuel), 930 pounds. 



In the above smelting charge the proportious are — 



Flux to ore 56 



Fuel to ore 30 



Fuel tocUarg3 19J 



Average charge calcnlated from data given in Tahlc IV. 



Charge (ore and flux). 733.4 pounds. Smelting charge (ore, flux, and fuel), 972.2 pounds. 



In the average charge the ])roportious are — 



Flux to ore 46J 



Fuel to ore 47| 



Fuel to ehareje 32^ 



