Arizona weekly enterprise., 1888-03-17


 provided with a four-inch Cornish lift pump operated by geared connections on the hoisting engine. The old tunnel at the 160 level of the shalt was enlarged, timbered where necessary, and provided with track for d distance of ninety eight feet from the shaft, and at the lat ter point cross-cut tunnel was started, to run direct to located point which will be the top of the air winze of the 2J0 | level, as a 70 on the sill heor of the future | I43 level within the confines of the ore body, as measured down the main shaft. A projected upraise of twenty-four feet, | in ore, will connect with the cross-cut | driven last summer cn the 119 level. The cross cut tunnel now being driven will have total length of about two | hundred and twenty-four feet, and is now completed a distance of one hundred and twenty-nine feet. It will reach the ob lective point towards the end of the present month. From the extreme north east corner of the sill floor of the 250 level, tunnel was recently started to direct to Shaft No g. and Is now com pleted for a distance of one hundred and thirty-one feet, it's total length to be two hundred and seventy feet. As the rate of progress is about thirty six feet a | week, it should make connection with Shaft No. 3 about the close of the pres ent month, and on the completion of the two latter tunnels, the entire ore body from the third floor of the 250 level to the surface may be operated through Shaft No. 3. thus largely relieving the main shaft to operate the deep workings. The accompanying plan and projection of tho present and projected workings from the soc level to the surface, will illustrate the operations mentioned.
 To summarize, in addition to the 536, : 737 cubic feet of ground worked out in the ore boay, there have been four hun and three feet of old tunneling re- modelled, graded and timbered, two hundred and sixty feet of new tunneling driven, and two hundred and fourteen feet of winzes sunk, with an incline raise of one hundred and forty eight feet,
 The total amount of ore sent to the mills during the year was 31 ,190 tons, of which 26, 594 tons went to Mill No. 1, and 4, 596 tons went to Mill No. 2.
 The surface quarry in the side of the old ''open pit was operated as hereto fore, to supply the deficiency in waste rock, needed for filling all open space ill the stopes of the levels not occupied by ore chutes and ladder-ways, to maintain the security of the mine. One hundred and thirty three tons were lowered to the 250 level, 269 tons to the 600 level, and 960 tons to the 800 level, a total of l, 1862 tons, or ,703 car loads. Thirteen tons uf ore were also obtained from the quarry.
 The quantity of water raised from the mine Work lngs thruu5h tie three shafts exceeds that of any previous year by ,, 220, 355 gallons, or an average of 6, ,08t gallons per day. On February 9th the water stood in Shaft No. ?, to the depth of eigAt hunl lred feet. O. that day the work of clearing the shaft by hoisting the water in buckets began and was com. pleted on March 6th since which time the shaft and drift at the $50 level have been kept clear. On June 10th these workings being connected with those ol the main shaft, the combined drainage of both mines went to Shaft No. to bt raised at that point. The workings a Shaft No. were kept clear part of thC year by direct acting pumps operated by , compressed air, but since the new hoist ing engine has been in service, the wate has been controlled by the small Cornisl pump before mentioned. l summarize the water raised for yearas follows:
 Gallons Main Shaft (No. D Jan. 1st
 to June 18th. h................64 .645, ,O8I Shaft No. 2-Original clearance, Feb. 9th to March 9th. .S16, 300
 Shaft No ? In keeping
 clear, March 9th to
 , SJune 10th. ...... 627 ,000 1 AS ,30' Shaft No. 2-Com biued drainage, 1 Jnne t9th to Jan 1st. =. ?, 133 40 Shaft No. 3-For the Year ..... 154 ,0o l On making the connection betwee 7 the sill floor of the 250 level and Shaf ) No. 3, the water in the latter will D a piped and also led to Shaft No. ?, wher l the entire drainage of all the working = will be controlled by the Cornish pump I ing system.
 3 The additions and improvements to tn T plant and machinery not already men f toned, were the transfer of 12"x16 e Prescott, Scott & Co. straight line al
 compressor from Shaft N Q. 2 to the mai . shaft, for use at such times as the wor : for power drills in the mine may be light - thus saving the extra expense ill runnin J. the large compressor; the erection of l. small dranghting room, and pay office $ twelve fe ct by sixteen feet Ill dimensions s and the removal of the water tanks to h higher elevation, and construction of $ building fourteen feet by thirty-two fet n over them A7"x4'x10' Gordon and Ma1 e well duplex plunge pump was placed d the engine house at the nam shaft for e better boiler feed and fire service. ). The operation of the machine shop h; :, been very satisfactory, and consid crab IS manufacturing has been done from ol l. own designs, with marked econom, l. including cars of all kinds, hoisting cage a (both single and double deck), and ire e tanks, as we'll as machine, engine all st other repairs. The difference in ireigl
 tariffs between raw materials and man g factured articles provides q margin f, saving.
 y The consumption of fuel at the mil '0 was 3,62S cords of wood (3,249 cords t. the main shaft and 279 cords at Sha h No. ?. Steam Is supplied to the hois IS ing engine at Shaft No. 3 from the boi y CTS at the main works. There are no lg on hand 571 cords at the main shaf ,h and 95 cords at Shaft No. ?.
 l. The year having been an exceptional