BULLION CAPACITY OF SMELTEES. 



697 



Losses The loss of lead and silver in smelting is thus estimated at the different 

 smelters : 



The average loss ia : Lead, 11.68 per cent. ; silver, 3. 59 per cent. 



Part of the loss in both lead and silver is recovered in the smelting of the lead 

 fumes. 



Bullion capacity of smelters The charges contain on an average 20 per cent, of 

 lead, of which 88 per cent, is extracted in the state of bullion ; hence it is easy to 

 calculate the bullion capacity of each smelter, as is done in the following table : 



TABLE VIII. Bullion capacity of smelters. 



Tons. 

 Total amount of bullion extracted during twenty-four hours (weight of silver and other impurities being neglected) . . 1551 



It has already been seen (Table IV) that the smelting capacity of the smelters in tons of ore IB 700 



Also, that the daily output of the mines is from 700 to 800 tons of ore, giving on an average 750 



