Arizona silver belt., 1904-07-14

Kelvin solves the transportation prob
 lem, the one thing that has heretofore
 been bar to the successful operation of the Ray. Ia d years time this transportation problem will be still further simplified by the arrival of the Arizona Eastern at Kelvin. Florence
 Blade.
 J. k. Rowe, of Denver, has been in the vicinity of Ray and Kelvin for several weeks past, looking up mining property for some Denver capitalists Saturday he visited the Red Hills dis trict, twelve miles east of Florence, ard looked over tho mining situation there. He was we'll pleased and will report favorably to his principals on the ore possibilities of that section, and it Is quite probable that they will take hold of the Westfall and other properties located there, and install a teaching plant. There is liberal quantity of carbonate of copper ore in sight there that would leach freely. Blade.
 An undertaking of considerable i'm portance is now in progress at the HolbroOk shaft of the Copper Queen company. At this mine large force of miners are now at work cutting sta tionS at the third, fourth and filth levels and from these points as well as from the bottom of the shaft men are busy with drill and pick increasing the size of the shaft from a four snm- partment to six compartments of full size. The increase of the size of the shaft will be made by raising from the bottom and will be 80 conducted as not to interfere in the slightest with turning out the regular production that has been coming from the mine. It will require several months to com plete the work but when finished the shaft will be the largest in the terri tory Bsbee Miner.
 The additions and alterations to the Detroit Copper company's concentra- tor will take at least eighteen months to complete, when it will be one of the finest, as well as one of the larg est, mills in the country, says the Mo renci Leader. The new concentration will have fl DOT area of l66x240 feet, and will be composed of l20 concen. tratlug tables. 10 jigs, Bryan mills, sets of rolls l6x42, aud 2S revolving screens for sizing Gas engines of 500 horse power in 150 horse power units vii: furnish all ths power to run the mill. New crushers will bs plac d in building west of the concsn trator and will have capacity of 100 tons an hour, thus completing in ten hours all the crushing required in a day. Above the concentrator will be located the sampler and a 400 foot belt con veyor connecting the two plants, both plants being operated by means of electric motors. The success of gas engines for power has made 1t advis. able to operate nearly every piece of machienry in camp by this method, thus doing away with most of the pres ent steam engines with the exception of the ice plant and hoists.
 A correspondent Of the Mining World writing of the Warren district says: The really big things that are being done in the way of developing min:s that will reach the production stage in the least possible time are conducted by the Lake Superior & Pittsburg and Calumet & Pittsburs companies, At the former it is ex. pected every day that connection will be made between the No. ? aud No. 3 shafts by means of drifts run from both. Approximately the tun- nsl connecting these two mines will be 2300 feet in length and in each in- stance are run from depth in the shafts of over 900 feet. The connec- ton once completed conitions will be greatly relieved in both mines, as the tunnel will allow of free circulation of air, while at the present tima the ventilation is very poor. One thing which the Lake Superior X Pittsburg will be required to do before com menciDg on an extensive productive career is the work of increasing it's No. and 3 shafts. At present there is one and one half compartment-en- tirely too small for turning out reg ular production in the most econOm teal manner. It is not reasonable to expect the company to attempt pro- ducing copper, even though there is already in sight and blocked out in it's mines thousands of tons of rich ore, until the abOYe-cited improve ment has been made. To raise these shafts to a proper size, say three or four compartments, will consume a long period of time, but after the work has been accomplished the Lake