Arizona citizen., 1875-10-09
THE CITIZEN.
SIrURD4y OCTOBER 9, 1875
~ow Process for Testing Ores.

1 It is with pleasure We observe an
 increasing interest regarding our af-
 fairs bv journals beyond our Terri tory. even if errors do creep in now
 and then. Under the above caption,
 The Bulletin of September 24 contain
 ed the following:
 As mining is one of the most i'm
 nortant branches of industry on this
 coast. and there IS very large per- ceptaqe of ore taken from the mines
 so rebellious that they cannot be
 worked with profit by any of the
 known processes, 1t would be mat ter of surprise if there were not thou
 sands of experiments made with a
 viaw to overcome difficulties and solve
 the problem. Heretofore, nearly all lexnerimenters have pursued the same course. and endeavored to overcome
 the difficulty by varying the form ot furpace-having all started out with the ldea that the first essential thing
 was heat. Sometime ago, Stephen
 W. Shaw conceived the idea that an easier and cheaper plan would be to employ chemicals. He, like all oth- CTS knew that sulphurets, chlorides and arseniates could be dissolved by
 the assayer, but the cost of the mate
 rials was so great as to preclude their heinz used in what is called work ing processes." He therefore set him self to discover some substance that
 would accomplish the object, and at the same time be so cheap as to be within the reach of those who have low grade ores to work. After a search continued through several years, he found the object of his la
 hors, and then commenced & series of experiments on reDelhous ores from different portions of California and Nevada. The success attending these experiments have been fully as great as the most sanguine experimenter could wish. Ore from some mines in Nevada county paid only S20 per ton by the usual milling process. although the assays showed that 1t contained ill the neighborhooi of $50 per ton. Mir. Shaw has worked three patches of this ore by his new process, each batch containing five hundred pounds, and the results have been from S4S to S56 per ton. Some samples of ore from Sierra county have also been worked, and in every instance the result has been wonderful, the ore yielding by this process more than a fire assay would show 1t to contain. NIT. Shaw Is now working some ores from Ari- zona, and will be able to report the result in few days. The great draw back to mining enterprises in Arizona IS the difficulty of working the ores in a profitable manner, for all the Ari- zona ores are rebellious to certain degree, and many of them to such an extent that the mines have been a5an- doned. The discoverer of the new process states that the cost of the chemicals necessary to work ton of does not exceed $6.59. . while the combinations for srseuiates cost but little more.
 The statement that all the Arizona ores are rebellous to a certain degree, IS not true, unless the simplest geld pres like those at Wickenburg and some other localities, are somewhat -ebellious. The Ostrich ore Is easily .educed and the gold saved Tn an ar astrar and the same is true of many . 'ther lOdes We could name. But The Bulletin article Is Of interest to our people