Arizona republican., 1911-06-28

, shaft will reach the Pasquale vein at The distance to be traversed between shaft and vein is 460 feet. Seven 40 ton shipments of ore ex- ceeding 26 per cent copper have al- ready been made by the Summit com pany to he Fl Paso smelter. and an other shipment is in the bins All the ore produced b the Summit has been that which had to be removed in the course of development work, no at tempt yet having been made to mine ore.
 Considerable in the way of surface ! improvements have been under way re- gently at the property. For the pur- pose of facilitating construction of the contemplated mill the framing shed is being refitted with a power saw and tracks for apid handling of material.
 The best drinking water is obtained at spring on the southwest end of the property, but recently an auxiliary spring northwest of the mine has been developed. probably in anticipation of necessity of supplying a larger force of men in the future.
 The boarding house at the Summit has a reputation among miners as be- ing one of the best in the territory, and recently an excellent system of shower baths, commodious. well light ed. thoroughly ventilated and supplied with hot and cold water, has been erected for the convenience of the men employed by the company.
 At present Summit uses wood fuel but with the advent of the mill and concomitant machinery power condi- tions at the property will be improved to a considerable extent and oil will be used as fuel.
 It is also probable that the lower levels of the Summit vein will be work ed through the main shaft in the fu- tur, connection of the shaft and lower levels of the vein being matter of no great amount of cross cutting.
 At the Miami plant there has not been much of unusual occurrence dur ing the past month. Because of the advanced state of the mines develop ment and the concentrating plants equipment the operation of the prop erty is becoming one of monotolOu regularity.
 The cOncentrator is turning out about 65 tons of 4O CT cent concen- trate daily, and saving of ore at the mill is about = per cent. The man. asement are confident that both these percentages will be increased in the future
 Unit No 1 has been under test for some weeks. and will be handling its Fsg4e r1elf- is not yet certain just how soon units Nos. . and 6 will be put into commits sion.
 In the mine about 20 feet of work is being accomplished monthly. At present Considerable timbering is in progress, the matt to be interposed be- tween the ore-bearing shist and the capping being one Of the first details of the great caving system that will bring the surface of the mountain down without mining the capping and the ore
 The tramway connecting the power plant in Miami with the mill on the hill above has been operating Sor sev- eral days and is greatly facilitating transportation of supplies from the rail
 
 At the Inspiration only development work is being done underground. al though the steady success of the churn drilling and the installation of machin- cry presages an era of activity in the near future.
 Between the Joe Bush and the Colo rado shafts the drift is being widened and heavy rails are being installed and bOnded-cOnnection of rail ends by heavy wires for transmission of the electric current that will move the un- derground locomotives to be used in hauling ore. The track is nearly all bonded in the haulage channels into the ore body
 Drill 61, 600 feet northeast of the Joe Bush shaft, went through 100 feet of 2.S per cent ore. Drill hole 31, 500 feet east and 300 feet north of the same shaft contained 24 per cent ore
 The Ball high speed 15O horsepower engine and the generator are being in stalled at the central power house at the mouth of the Joe Bush tunnel.
 A foot Hardinge conical mill, en- ployed for fine grinding after the ore passes the rolls. is being tried out at the company's test mill
 At the Superior &, Boston conditions continue to improve The ore in the southwest drift from the McGaw shaft on the 100 foot level, altogether is bet ter. It contains more iron and less silica. The drift has been driven about liO feet along the foot wall of the vein
 It is not the intention of the man. agement to crosscut the vein until it has been developed to a considerable length along its width. The only place where it's width was revealed was when the drift first encountered and cross ed the vein At that point it was from 16 to 20 feet wide
 The crosscut being driven north from the 10th level is nearing the vii clnlty of the Old Dominion fault, al though the exact distance of the lat ter is not known, its exact dip never having been determined The cross- cut is in shattered uuartzite running very high in iron.
 The Superior & Boston has found if necessary to ship some ore as if has not the bin capacity to hold the ore that must be removed as it is broken Tn the course of development. Such shipments, however are mt ra,,r55