Weekly journal-miner., 1908-12-23
CALUMET & ARIZONA
 SHELTERS ARE WARMING

BlSBEE, Dee. 1j.-The work at tho Calumet &Arizona smcliers st Doug. las is progressing beautifully. Tho new 300 ton stack Is working over time and is producing nearly sixty tons daily. Since the blowing in of the large stack the construction work has consisted principally of getting together the material, and the prepar ations for the enlargement of the smelters.
 It will be interesting to learn that before the plans are completed all of the old furnaces will be enlarged and will practically double their present output.
 The furnaces are now, 300 tons ca paci,y, with the exception of the new one, but they will be extended ten feet, making them twenty five instead of ffteon feet, increasing the capacity 200 tons. But the way the new fur mace has been working it has been 600 instead of 800. The developing of Inc new ore bodies of the C. & A. proper. ties in Bisbee and at Leadville and other points has forced the company to make large preparations for the treatment of additional ore.
 Superintendent James Wood is hur. rying everything as fast as possible to get in shape for the rushing of the new stacks.
 The company has custom of keep ing one furnace down, SO it was be. fore the sixth furnace wa. installed when only four of the five were gen. erally running. and this custom will continue during the reconstruction stage, but one furnace being extend cd at a time. SO that the producing capacity of the plant will not he re- duced. It is expected to start the first of this extension work next week and that it will take about six weeks to complete. Then, if all is working well. work will at once be started on the extending of second furnace which may be expected to be reblown in about three months from this time. After that the other furnaces will shut ! down. one at time. and await the work of extension till brought to the type that has been found most success. ful at Butte.
 Today the capacity of the C. X A.. smelter has been increased more than 800 tons per day over the same time last year. and three months from now an added capacity of 100 tons per day may be expected.
 A matter of which little has been heard and still less is generally under stood is the installation of new plant at the Copper Queen shelter, which is expected to occur about the first of February next. a entering plant Experiments along tnis line have been going on for the past year with such good success that the mate rials are now on the ground for the proposed new plant.
 Cintering is a process of treating fue dust and concentrates so as to prepare thcm for the blast furnccs and to avoid loss in the blst. The hue dust and concentrates, or either, are mixed with sulphidc ore and treated by blow pipe flame till entered or somewhat roasted. This process re- moves some of the sulpnur and almal- gamates together the ore, dust and concentrates into a sort Of honey combed mass which is then readily sus- ceptible to treatment in the blast fur naces with a minimum of loss. It IS expected that this process will prove superior to the results that are being obtained with the reverbatory.
 The output of the Copper Queer smelter continues to run at abou' s.J0OOOo pounds for the montn, an' the output for the year 1908 will b' not far from lOO,OOO,0OO pounds o' copper.