Zitic DesUccrizidion. 83 



The Gernuiiiia AV'orks are sitiuitpd at Flack's Station, oii the 

 XJtali Southern R. E., six miles from Salt Lake City. They 

 treat silver-lead and also ores which they purchase in the open 

 market. They have one shaft-furnace, and their capacity is 40 

 tons of argentiferous lead and 3 tons of ore a day. The value 

 of the product of the works in copper and lead counted together, 

 silver, and gold, in 1874, was 11,350,000, in about the propor- 

 tions of 5, 6, 3. The coke used comes from Connellsville, and 

 costs 130.00 per ton. 



At Cheltenham, there are two shaft-furnaces, but only one is 

 in blast at a time. The furnace is 10 feet high, 4 feet G inches 

 in diameter at the throat, and 3 feet 6 inches at the hearth. 

 The hearth is 2 feet deep from the tuyeres down. The water- 

 jacket is made of wrought iron, riveted together in three parts, 

 and extends four feet above the tuyeres. In the west it is fre- 

 quently made of cast iron. The fore-hearth is 6 inches wide. 

 The furnace has three tuyeres, 2| inches in diameter. The 

 cinder-tap is composed of a small graj^hite crucible with the 

 bottom knocked out. The blast is produced by a Sturtevant's 

 blower, 'j'he pressure is from \ to | of a pound of mercury. The 

 blast conduit is arranged to discharge into the air, whenever the 

 wo]'k of the furnace has to be stopped for a short time for 

 repairs. The bins for holding the lead and. material contain- 

 ing it, are on the level of the bottom of the furnace. Access to 

 the charging-level is by an inclined plane. 



The fusion-bed is made up of — 

 Little CottOQwood Ore, - - Car-loads. 10 to 25 



Argentiferous Zinc Blende, from Colorado, - - 10 per cent. 



Mill cinder, - - - - - - 20 " 



Lead slag, containing 3 to 8 per cent, of Lead, - - 70 " 



Coke is added, amounting to about 9 per cent, of the charge of 

 oi'e. When there is a considerable amount of sulphur, 2 to 3 

 per cent, of old iron is added. 



The fusion-bed is spread out over a surface containing 200 

 square feet, to the depth of 11 inches ; so arranged, it consists, 

 commencing on the top, with scrap-iron when there is sulphur, of 



37^ wheelbarrows of lead slag, - - 7,500 lbs. 



50 " of ore, - - 10,000 " 



37 J " of lead slag, - - 7,500 " 



25 " of tap cinders, - - 5,000 " 



