Arizona silver belt., 1904-06-16

| '""So' 'ho sduBuc iS iHOSJly quartz or friable nature. Very little chalco.
 pyrite eau be observed with the py
 rite, but no doubt it is present and carries most of the copper. The tenor of the pyritic ore usually exceeds 3 per cent portion can be smelted di-
 rectly and the remainder is well adapted to concentration.
 In carrying out it's new plan of de. velopment the company has provided
 for more active campaign than was possible under former conditions. The old shaft near the south end of the workings was partially disabled by movements of the ground due to cav ing, and hence could not be relied upon to furnish the necessary capacity for hoisting when work was under full headway. As substitute, new shaft has been driven at a point further north, and on the foot wall, where there is no danger of subsistence. It Is a vertical, Accompaniment shaft, measuring 24A6 feet in section, and has steel head-frame 76 feet high. The hoist is a direct acting Nordberg, 2Ox60 inches, equipped with steam brakes and steam reversing motion. The shaft is down to the tenth level, and will soon be in communication with the twelfth, now the bottom level
 A small flow of water has to be han died in the mines, but this will event ually prove an advantage rather than otherwise, as it can be used in the mill which is to be a0ded to the company's plant. Most of the water enters on the ninth level, and single pumping plant which is to be installt q on the level below will dispose of the entire flow
 While the new smelter is under con- struction the old plant has been pressed into service, and two furnaces are now making Bessemer matte which IS converted in temporary stand. The ore is obtained from the Old Do. minion and United Globe mines, but about two carloads are exchanged daily with the same quantity of Cop. per Queen ores, which are needed for their iron and sulphur. The necessity for this arrangement will cease when the company begins concentrating its SulpbideS.
 The smeltipg works are being erect. ed in proximity to the old plant, some distance south of the main shaft, with which they are connected by rail way. The main building is of steel construction, measuring ll5 feet long by 3O feet wide, with bullion and re- lining shed attached, of the same length. It is tO be equipped with three furnaces, 4Iyls0 inches at tuy- eres, and two stands of converters. The furnaces are arranged in tandem with settlers and can be tapped from either end so as tO run the matte from two furnaces into one settler. They will be charged automatically from the cars. A 40.ton travelling crane has been set up for handling the converters. The dust chamber in the rear of the furnace building is of steel and brick construction, designed To handle easily j0,O00 cubic feet of free air per minute.
 The increased demands for power have necessita the erection of new steel power house near the smelter it will supply about HOO horse power from four oil.Hred generators. The mill, to be erected On a site ad icent to the main shaft, will have capacity of 300 tons per day, and will concen- trate the low-grade Suldhides so as to obtain product suitable for mixing with the Oxidizsd ores.
 With the new works under full head. way, the company should be In posi- ton 10 double its present output, turn  ing out over 20,00O,000 pounds of cop. per per year. It is expected that the smelter will be blown in early in the coming summer.
 The United Globe mines comprise d large number of properties that were consolidated under their present title in 1892, and have since been active producers. Through the Hoosier and Gray mines the company has explored the continuation of the Old Dominion fault for long distance on the strike, finding so far as the workings have been extended in depth, practically the same geological conditions that characterize the rich ore bodies to the southwest. At present the Hoosier shaft, which is bottomed at CO., feet, is closed down, and most of the develop ment is being done from the Gray shaft. This has been driven on the foot wall of the iiSsure through dia-