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Show ISTEI SHOVELS BMiTI Phelps-Dodcje Company Is j Prosecuting Immense De- j velopment Campaign. i l ImP::;C, Ar:z., Cf'.Mir.in,' otlI- ! risers have j'ved P.e Mstori t-rophet'-f j i-ro'.h-m and have Ptera:!;-- 'V.uved tV.o ; mountair! to Maiiomc t.' Ten mil! ion feet of .acvaiTientu hill, adjoining Pisi.ee, i- i 'l.-in ri:ovc-ieJ by ateam and v'-''t' d away j hy railroads, so Li. at t i-. j Phe p:s-Pode. j e'jr,' or.itiun can reach ,0(0,0j tons of copper ur: v.idcii is part of tho ram.fica-tioas ram.fica-tioas of tiie Copper Queen mi no. It is a ipaiuie pt'oj-et. All the genius of t P e eia.aeeriii' department o:" tl'o -':-anizat ion was rem li red to pi; : into -;-i fe'.'t. trie levedn ot the mountain, t he work of wlia-h k-in in UU7. C.ire had to he used in blasting to prevent d;im-a d;im-a no to property and life in Pis Jeo, and Warri.-n from ionlders hurled down tntj mountainside into tho towns. Whore to put the earth covering of this mining treasure was another problem. Warren and Pishee occupy the gn Ich at the foot of Sacramento hill. It was nec-esary nec-esary to build rai.roail tracks into several sev-eral spur yuhhes and because of the narrow nar-row width theSe had .to bo single tracked. To pre vt nt accident and lacuiiaie continual con-tinual movement of earth from the steam shovels working at trie hilltop, a competent compe-tent railroad train dispatcher and telephone- equipment were installed. The work was begun in the midst of the war, while machinery was hard to obtain ob-tain and labor difficulties were increased ; by Lho P W. W. agitators. Yet in spite of these handicaps the workmen have leveled the top of the hill and removed a large slice from ono side of the mountain. The steam shovels havo not yet reached the rich copper veins of the Copper Queen, but they have come into ore containing con-taining one-half to 1 per cent copper. Some day, perhaps, a means may be discovered dis-covered to extract this copper at a profit. I Experiments have been made in heap leaching of low-grade ore which promise a few cents a ton profit by separating it into piles for leaching by water alone. In the meantime the steam shovels are keeping steadily at work, in the hope that soon these giant instruments may be rivaling the Copper Queen underground miners in the production of copper. This is said to be the first experiment of its kind in mining and iis success may mean a revolution in the industry. |