Daily Arizona silver belt., 1907-12-05
COSTS
 AND PROSPECTS
 GREENE-CANANEA
REPORT ON PROPERTY PRINTED IN NEWS BUREAU GIVES IN
 TEREsTING FACTS

ceived the following report on the
 Greene-Cananea property from min. ing engineer who has been at Cananea and who is in a position to learn the
 inside facts.'
 The company is overhauling it's ma chinery plants, completing the changes in its shelter, revising its concentra.
 tion scheme, renewing material hnd evidently arranging to make copper cheaper and on a larger scale when op- , erations are resumed.
 The cost of copper during the past few months has been exceptionally high, but, contrary to former practice, all costs of reconstruction, etc, have been put into current costs. This period has witnessed the complete rehabilitation and reconstruction of the smelling works, every one of the former fur naces, except Nos. : and 8, having been torn out and rebuilt larger and uni formly, before the shutdown, and these two have been nearly completed since then. Formerly the furnaces were of various sizes, poorly arranged, crowded, and several of them were still of the Mitchell hot blast type, an unsuitable installation, put in by George Mitchell when manager, some years ago.
 In connection with cost at the Greene 1t must be remembered that metal say. ings from the concentrators have never averaged better than 72 to 75 per cent of the assay values of the concentrating ore, varying with the amoun. of alum iniferous material in the gangue. The great tailings dam, therefore, carries probably better than l20 per cent cop per, a tremendous loss. Also that the metal savings in the smelting and bes. semer processes returned saving of about 90 to 92 per cent of tH mineral. as near as could be ascertained from the sampling that was possible, close sampling being difficult from the fact that there was never, until quite recent ly, any chance for mixing and storing. In other words, an ore running 3 per cent copper would go to the shelter as 2.25 per cent, there to be mixed with one-half its weight of an ore running, say, per cent, giving a mixture worth, gross, 63.2 pounds copper to the ton. This when smelted, showed a reduction to about 54.ss pounds to the ton, or, at l2-eent copper, value per ton of s6.s2, aside from any gold or silver
 There is no mechanical, metallurgical or economic reason why Greene should not produce its ore for that price, but it may be doubted if it has yet dtne son.
 The concentrating ores of the Cam anea-Duluth and Cananea Central, now parts of the Greene, carry no such high aluminium content at the Over sight, from which nearly all the com pany's low concentrating ore has been mined in the past; therefore the use of low grades from either of these prop critics should increase swings. Those properties probably contain enormous low grade deposits, with some precious metal values. Despote what may be said by uninformed individuals, the Cananea-Duluth and Cananea Central are perhaus the most valuable mineral assets the Consolidated possesses. The former can be made to show vast ton mage of ore excellent for concentration and carrying several ounces of silver to the ton.
 The Elenita Development company, owning the Bonanza de Cobre properties lying alongside of the old Greene, has called $3 payment on its. stock and is at work. It is capitalized for 10000 shares, par $10, of which 6,00o are in the hands of Lindsay and Talbot, orig inal locators, the same amount in the hands of L. w. Powell for himself and many associates, and the remainder held by Messrs. T. F. Cole, c. A. Cong don and associates in Duluth and the east. The property is looked on as of excellent promise and will be developed at once.
 At present the Calumet & Sonora is the most active mine in this camp, and 1t is operating at Catalina group, ad. joining Bonanza de Cobre and the Greene mills. It is making shipments of silver-lead ore, running to about $150 a ton in value, to the Luna shelter at Deming. One or two cars of this ore will be shipped in the course of month )r so.
 The government of Sonora has ap- proved the action of the big company in shutting down its works, and has 50 per cent of the state taxes Q all merchants in Cananea and sur oundings, indefinitely.
 It is said that 14,0O0 persons, men, women and children, have left Cananea md this district in the past forty days.