PLANT OF SMELTER K. 



689 



placed iu the rear of the works. The works had ceased running at the time this report 

 was made, but they deserve a description chiefly on account of the well-constructed 

 brick dust-chainber with which the furnaces are connected. 



The smelting plant consists of one Piltz furnace, worked with six Inheres, and 

 constructed by Messrs. Fraser & Chalmers. The diameter at the base of the water- 

 jacket is 40 inches, and the furnace is similar in every respect to the Piltz furnaces used 

 at other smelters. Besides the Piltz furnace there is a Easchette furnace, charged 

 through two feed-holes, and almost identical in proportion and capacity with the Ea- 

 schette furnace used at smelter H. The water-jackets, all made of cast iron, are 

 thirteen in number: one in front, two at the back, and five on each side. The internal 

 dimensions at the tuyeres are 5 by 3 feet and the furnace is worked with nine tuyeres. 



Both furnaces are connected with a dust-chamber placed immediately below the 

 feeding-floor. This chamber is built entirely of red brick. 



The plan of this chamber is given in Fig. 2, Plate XL, showing the brick cham- 

 ber D', the brick flues N N', communicating with the sheet-iron stack F. In this plan 

 A represents the Piltz furnace and B the Easchette furnace. The same chamber is 

 represented in elevation in Fig. 1. The two sliding doors through which dust is 

 cleared away are placed at d. The capacity of the works is 40 tons per twenty -four 

 hours. The machinery consists of a 50 horse-power engine, two Baker blowers, one 

 Blake crusher, and one set of Cornish rolls. The charges are weighed, as at all the 

 other smelters, on scales placed on the feeding floor. The slag-pots used are mounted 



on wheels. 



SMELTER K. 



Smelter K is the smallest smelter of Big Evans gulch, and has only one furnace, 

 which was not running at the time this report was made. These works are, on a min- 

 iature scale, disposed exactly like smelters H and J, and they have this point in com- 

 mon with smelter H, that intermediate slag-pots are used for catching any bullion 

 mechanically carried away. The furnace is a Piltz pattern furnace 40 inches iu diam- 

 eter at the base of the water-jackets, and worked with six tuyeres, 2J inches in diameter 

 ait the nozzle. The capacity of the works is 18 to 20 tons per twenty-four hours. 

 This smelter affords an opportunity for showing the plant and manual labor required 

 to work one furnace. At these works the manual labor was represented by 



The plant, supplied by Messrs. Fraser & Chalmers, of Chicago, consists of 

 One Piltz furnace, 40 inches diameter at the water-jackets. 

 One tubular steam-boiler, 48 inches in diameter and 14 feet long. (This boiler is 

 sufficient for two furnaces.) 



MON XII 44 



