Arizona republican., 1904-02-10

shifts are worked above and below sur face, and mostly Americans are em- ployed. The low grade ores are sorted and dumped in large quantities near the shafts, to await the erection of a concentration, which is contemplated. and 1t is only question of a short time until one win be building.
 The company is running a few cya- hide tests now for the purpose of putt | ting up such plant. At the top of the old Central shaft the first thing to at tract attention is the splendid hoists and necessary boilers, the boilers being seven in number, of the latest and | most approved pattern, are equipped with oil burners. Five of them are | used for the pumps only. The other two are devoted to the hoisting. The nest of boilers is so conveniently ar | ranged that with the oil burners only | one man Is needed to attend them all. | The hoists also attract attention, due | to their evident thorough construction | and smoothness of operation.
 Our party visited the 600 foot level
 to inspect the immense pumps. There | was a real surprise in store for us. | Of course we had heard of the capacity of the great pumps of the Tombstone I Dul lHcy ilecu lO Dc Stcl
 to be appreciated. These pumps, three
 In number. are on the 600 feot level.
 and the other two on the 700 foot level. | They have capacity of 6.000.000 gall Ions for twenty-four hours. They are
 triple expansion duplex. 13 in. 25 in.
 x 3s, with a 13 in. plunger and "A in.
 stroke. Both the suction and discharge | pipes are IA in., giving fifty-five gallons
 per stroke. These pumps are kept in
 continuous motion and lift about D. 500,0G0 gallons per day, which Is neces- | sary that the mines may operate on | the 700 foot level. As might be sur
 missed the pumping of such volume | of water daily is gradually lowering the water table of the surrounding country five feet per month. This is shown by the fact that the water level
 in the west side shaft, which is about
 half mile from the main shaft of the
 Consolidated, has been lowered over
 sixty feet since operations began, a
 year ago.
 From the pumps the class was con-
 ducted to the workings in the sulph-
 urets, where two very distinct and well
 marked veins of ere were examined
 The ore occurs at the contact of the
 quartzite and blue limestone. This
 working was on the 600 foot level, and the ore which was being taken out had . a value of from $40 to $1O0 per ton ir gold, silver and lead. The geology was peculiarly interesting at this point as was also the mining. The stratificatior was especially we'll marked, and an ex-
 cellent opportunity was afforded tc study the large and well defined in- : trusive dikes of porphyry. The cleal
 nd fvf far ! perintendent Walker was of grea : value to the class and was thorough! appreciated. This was evidenced bS the fact that whenever he would stoI to explain cut would come every stu l dents notebook, and the informat ton with sketches of sections and work g ings, was jotted down for future ref , erence.
 Frcm the coo foot level the class wa! ' taken to the 400 level, where an espe
 cially interesting mining operation wa q in progress. At this point the com B pany was drifting across a cave in T stope of the old Contention mine l. Here the loose material was held il place by a very ingenious method O 2 timbering and tagging. Here, again
 the superior mining knowledge of tn e superintendent was of great assistance a At another place our attention wa e called to new strike which had bee
 opened up two days before We arrived = Here some beautiful ore was being re y moved-great masses of horn silver n copiously dotted with flakes of fire T gold. This ore. we were informed, raj 7 as high as $3O00 to the ton and is evi e dencc that there is yet much ore | Q this district to be discovered. Upon tn
 return to the surface the class assem
 bled for the convenience of one of tn
 kodak fiends who accompanied tn
 crowd, after which a three times thre c with tiger was given with a geo
 will by the class for Superintendent
 Walker, between whom and the clas
 bond of sympathy was early discov
 cred, as the superintendent Is gradu ., ate of the Michigan School of Mines . After a good look at the topograph
 of the country the class returned t '. the hotel and did justice to all tha
 was in sight or on call. The train fo <, Fairbank found us all on board at Ia = p. m. Connections were made at tn
 above place for Bisbee.
 I