The Velio and Cazo Process. 



47 



Mr. Ilul* gives the cost in detail as follows, for a much more 



recent period. 



Cost of Grinding One Ton of Ore. 



Mules, 



4 workmen, 



1 mule-driver 

 Repairs, 

 Night shifts, 



$0,115 

 0.148 

 0.055 

 0.044 

 0.208 



$0,570 



Cost ter Ton of Working Ten Quintals Each in Thirty Arras- 



TRAS. 



Mules, - 

 1 foreman, - 

 1 helper, - 

 3 feeders, - 

 5 arrastra men, - 

 3 watchmen, - 

 3 men, - 

 Bottom-stones; 

 Grinding-stones, - 



$1,871 



0.142 



0.077 



0.099 



0.219 



0.132 



0.099 



0.116 



0.357 



$3,112 



Patio Working, per Repaso. 



Mules, - - - $0,029 





7 workmen, - - - 0.021 





$0,050 





14 repasos at 5 cents, 



.70 



Salt, ---... 



1.55 



Sulphate of copper, 



- 0.96 



Labor, - 



0.17 





$3.38 



Settlers and Distilling. 





Mules, - 



$0,082 



Various expenses, 



0.417 



Charcoal, ----- 



0.066 





$0,565 



Eng. and Min. Jour. , Vol. 



p. 105. 



