Bisbee daily review., 1915-11-21
Facilities for Extracting and Treating Ores are the Most Modern in the State, and in 1916
 Inspiration May Set Copper's Pace

With a reserve ore body of g0.OOO,- GOO of tons 10 work. with one of the most complete and modern equipments obtainable and with development in a high state of readiness. it is expect ed that the Inspiration Copper Com panys output in the coming year. 1916. will be the greatest of any mine in Arizona It's present daily output of 4.000 tons is expected 10 be increased to 15O0O tons and maintained at that figure consistently. Years Of time and millions of money have been expended to place the property in the enyiable position that 1t now occupies. And this one Of the youngest of the big copper companies of the state and one Of the very latest to enter the ranks of producers.
 Prior to 1913 the Inspiration prop perty was the scene Of great activ- uies. as was then outlined in the min ing edition of the Review. Since that time activities have been vastly in- creased and further continued to the end that complete readiness for a great output might be secured. Orig inal plans had to be enlarged upon as the development work insured greater resources than had been anticipated For instance it was deemed to the advantage of stockholders 10 still fur ther increase the capacity of the mill for an output of 14,O0O Co 15,O0O tons daily Further properties were also added, including the Keystone Claim lying between the Inspiration and Live Oak groups for the sum of $795 $40 and resulted in filling out the property and making it continuous
 System Ore Extraction.
 Since the middle of the year 1913 the Inspiration ore bodies have been opened up for caving which will be the economical system of operation in this property, the particular system of which use is to be made. being that known as the "Ohio System of min ing which was put into operation at the Ohio Copper Company's property at Bingham Felix Mcdonald, now in charge of the mining operations Of the Inspiration Company. At Bine- ham it has proved both highly suc- cessful and most economical and Mir Mcdonald has found conditions at the Inspiration property well adapted for the use of that method.
 The essential features Of the Ohio Caving system are that the ore bodies are opened up by small drifts and rals es. subsequently to the driving of large haulage drifts in the barren rock un. deriving the ore bodies. After sucr development operations, ore extraction is ready to begin This is achieved by taking the ore out in horizontal slices starting at the top of the ore body
 Under this system, once the caving has been started. the operation Of shoveling is entirely eliminated The ore falls down the raises into .he chutes on the main haulage lino Thence it is trammed to the main hoisting shaft Thus expense in labor time and power is minimized at thC outset
 Novel Hauling System.
 Tramming is performed at this mine through the use of compressed aii locomotives each drawing a train oi % cars Of 5-ton capacity. It is tho only copper mine that is employinl compressed air as the motive power for haulage and it is fully expected that this uothod Of transportation win show fully as good or better re rults in tramming the ears as can b' obtained by the usual methods of cleo tric haulage
 Concrete Hoistinp Shafts.
 Another important innovation ii mining methods has been the con creting of hoisting shafts The com pany has gone to great expense iI the construction of its hoisting shafts consisting of two, each Of three com partments. and concrete lined. Thes'