SMELTING CHAEGES AT INDIVIDUAL SMELTEES. 



651 



Smelter B. 



Smelling charfics made hi AiiijukI, 1880 — Coutinued. 

 No. 3. 



Charge, 700 pounds. Smeltiug charge, 840 pounds. 

 No. 4. 



Charge, 650 pounds. Smelling charge, 790 pounds 



At Smelter B fuel is measured by the wheelbarrow. Eighty pouuds of charcoal 

 represent oue charcoal barrow made of thiu sheetirou and holding about 5h bushels. 

 Sixty pounds of coke represent an ore barrow used also for coke. lu Fig. 2, Plate 

 XXXI (elevation of Smelter C), both kinds of barrows are indicated. 



In the smeltiug charges Nos. 1, 2, 3, and 4, the average proportions are: 



Flux to ore. ... 



Fuel to ore 



Fuel to cliarge . 



;<6 



27A 

 201 



find — 



If we reconstruct au average smelting charge from data giveu in Table lY we 



Charge (ore and flux), 706.7 pounds. Smeltiug charge (ore, flux, and fuel), 871.8 pounds. 



The figures represented here are normal ; the great amount of old slags used at 

 this smelter accouuts for the relatively small proportion of hematite. The percentage 

 of fuel is in excess of that giveu in the preceding examples, for the reason that part 

 of the fuel at the smelters is used for assaying, heating, and various other purposes 

 besides smeltiug. 



The proportions in the average charge are as follows : 



Flux to ore 



Fuel to ore 



Fufl to cliarge 



41i 

 33 



23i 



