The copper era., 1901-11-28

[ made thorough examination or th l, companys mine, the Copper Hill, dur l. ing his late visit here and expresse c himself as being well satisfied with th |. progress made in developing the prOI 5 erty, and the increase Of ore in tn i00-foot level. Work is now confinet to the drift in this level, which is il . lsO feet, and in which there are i'm , portant occurrences Of ore, the orr . body having shown considerable i'm , provement Of late. Work in this drif
 Is being pushed with all possible speed
 with three shifts of seven men each
 and the intention is to continue it into
 the COchise claim for distance ol
 about 900 feet from the shaft Mr.
 Armster has bonded the Great Eastern
 group of copper claims, adjoining the A. C. C.'s property, from Harry Sul-
 tan and J. B. Newman, and a force Of
 men will be put to work on the Great
 Eastern next weak.-Silver Belt.
 w. r. Howle returned last night
 from Globe, Ariz., where be went to
 close deal for the Columbia group of copper mines near that place. These mines have in operation for some time and are known as the Cole and Good
 win mines. The price paid for the
 mines was S3O, ,OO0 The deal was made two weeks ago but the papers were not
 signed until Monday. In speaking of
 the mining interests in and around
 Globe, Mr. Howle said: q have been
 making that camp for nine years
 and have never seen it ''as prosperous
 as it now is. The old mines are being
 worked to an advantage not dreamed
 or and new ones are constntly being opened The cause of the prosperous condition is the striking of sulphiGe ores and in large quantities at that The first strike which was made caused others to try and even old mines were reOpened and are now pay ing big money. The Columbia group ! is now being connected with Globe. That is the road which is being con- structed by Indians of the reservation and was the cause of considerable trouble for while but it is all settled now. ."-El Paso Herald.
 The Tombstone PrOspector says that the water level on the big shaft of the Co.,, had been reached md further progress as far as depth is )f the big pumps and installation Ot ,ame to drain the lower levels that the treasure of mineral wealth below may )e brought to the surface and enter .hc commercial marts of the world. The force of men employed on the cvels to connect with the old work ngs, while the plans for excavation work to accommodate the pumps, land ngs, and machinery, etc, call for more extensive work of a most substantial character. This work will require several more months time and it is not likely the pumps will be in place by January or early in February. The ,xact depth ot the water level is 569 eet and is within a foot of the esti- nate mtue UclOFe lne Noth was Colh- neuced.
 A novelty in Arizona mining is be- ng conducted about two miles north Of Mayer by the Mayer Placer Mining company, says the Prospect. w. J. Lester has charge of the work and has introduced the New Zealand process of iredging and washing placer ground, he first process of the kind to be in- reduced ir the territory. The capac- tv of the shovel is one and quarter ards of gravel per minute, and of the washing car one yard per minute. About thirty-tive horse power is re- luired to operate the plant. The dirt md gravel lifted by the steam shovel is deposited into steam lined hopper nd centrifugal pump throws the water into a six inch pipe which washes the earth from the hopper into what is known as a trOmmel, which is ! cylinder, in this case twenty feet in ength, two and one-half feet in diameter and perforated with holes, he largest of which are half inch, which allows stone and gravel three ighths on an inch in thickness to pass through as the trommel revolves dis harging the dirt and gravel into lauting pans, the bottom of which are covered with heavy cocoa mating covered with coarse diamond shaped ThN plpS which ara siy nches deep, seven feet long and two eet wide. are shaken by machinery md the gravel passes over the mat ing, out at the open and onto another ,imiliar pan which slants back the other way, and after passing over the alter the dirt is discharged into an elevator consisting of a series of buckets on an endless chain, the gold having been caught in the cocoa mat ting that covers the bottom of the pans. There are eighteen of these pans ou each side Of the perforated cylinder or trommel, and probably % per cent of the gold is saved on these first three feet of the mating, in the top pans. The rock and gravel to large to pass through the four-inch screens and holes in the trommel, are carried through and discharged by means of the chain of buckets. A con- siderable part Of the water is saved and can be used over again and steady supply of fifteen inches of ,va tar ia panuirad whan the nlant is in