690 GEOLOGY AND MINING INDUSTRY OF LEADVILLE. 







One stationary steam engine (cylinder 12 by 18 inches). 



One No. 5 Baker blower, with mercury gauge. 



One complete set of blast and induction pipes, with hose and tuyeres 



One Blake crusher (opening between the jaws, 10 by 7 inches). 



One set of Cornish rolls, 16 by 10 inches. 



Eight slag-pots, mounted ou wheels or on independent cars. 



Six lead-ladles. 



Eighteen lead-molds, with name of smelting firm at bottom, for branding bullion. 



Two No. 4 sheet-iron mining-barrows for fuel. 



Thirty-five steel furnace-bars, from f inch to 1J inches. 



To this must be added either a sheet-iron dust-chamber, 8 by 8 by 10 feet, con- 

 structed by Messrs. Eraser & Chalmers, or else a convenient brick chamber placed 

 under the feeding floor; a 10-ton Fairbanks platform scale, and several ore-barrows, 

 shovels, etc., and a water-tank for feeding the water-jackets of the furnace. 



SMELTER L. 



Smelter L is the Little Chief smelter which stood on Fryer Hill, above the Little 

 Chief mine, and which has been pulled down, owing to the sinking of the ground upon 

 which it was erected. The Little Chief smelter ran only on Little Chief ore, and its 

 ore-room was connected with the shaft of the mine by a railroad track, upon which 

 the loaded mine-cars were run. 



The capacity of smelter L in tons of ore per twenty-four hours was 35 tons, which 

 were smelted with dolomite and hematite in the Raschette furnace now at work at 

 smelter H. More sows were found at this smelter than at any other, showing that the 

 slags were basic. 



During the year ending June 1, 1880, 5,500 tons of ore were smelted, producing 

 760 tons of bullion. The plant consisted of a 40 horse-power engine (cylinder, 16 by 

 24 inches) and a boiler, 48 inches by 14 feet, constructed by Messrs. Fraser & Chalmers ; 

 one No. 5 Baker blower; one Blake crusher, 15 by 9 inches between the jaws; and the 

 furnace previously described. The slags at this smelter are remarkable for the ab- 

 sence of titanic acid. 



SMELTEK M. 



These works, the first that were erected in Leadville, were being pulled down at 

 the time this report was made. They were situated immediately outside of the city 

 of Leadville, at the junction of the upper and lower district roads of California gulch. 

 The allotted space for the slag-heap between the works and the lower road was soon 

 filled up, and the slags had to be wheeled up at the back of the works on a level with 

 the feeding-floor. These slags are unlike any other produced in or near Leadville. 

 They are coarse-grained, with a dull fracture, extremely dense, and contain an enor- 

 mous quantity of lead and silver. 



An opportunity was afforded of assaying a few of the ores which were in the 

 bins after this smelter ceased running. Their contents in lead and silver were as fol- 

 lows: 



Lead per cent.. 13.9 8.7 0.9 20.8 



Silver.. ..ounces.. 34.9 00.25 70.4 45.5 



