Bisbee daily review., 1906-05-17
BONANZA CIRCLE
 DEVELOPMENTS
H0ATSoN SHAFT HAS BEEN IN LEACHED ORE FOR PAST TWO WEEKS = BUCKEYE DRIFT HAS OPENED UP THREE HUNDRED FEET OF GOOD ORE IN CALU-
 MET &ARlZ0NA = WORK AT DOUGLAS.

terially both to the grade and volume of the company's ore bodies and means
 an important enlargement of re
 sources. The Pittsburg & Duluth ore
 shipments to the smelter continue
 steadily. in slightly increasingvol- ume.
 Lake Superior & Pittsbure.
 The Cole shaft of the Lake Superior
 & Pittsburg is approaching the 1900 foot level in depth. The station has
 been cut at the 1,200-foot level and drifts are just getting started there,
 so that no important results have been
 attained at that depth yet. These drifts will extend under the ore de Velopments that have already been
 made |. the 1,0o0-foot and 1,10O-foot levels. In the C~.tts at the two latter ,esels no important de,'alopments have been made lately. The openins up Of previously discovered ore bod les continues steadily. The ore ship ments to the smelter continue in about the same volume as before. The per | manent surface equipment is operat- ing regularly, handling the Lake Su- rerior & Pittsburg and Pittsburg & Du. ,, !dth ores. -.- ..- Oliver and Irish Mag srafts. At the Calumet & Arizona's oliver shaft the second railroad spur has just been completed, giving that shaft its full equipment in the way of trans portation facilities. Full operation at the shaft is still held back because the hoisting engine is not completed, although the old hoist is capable of Saa5ling . fair volume of ere. The Teg bo.st is going into position and will be ready for service within req sonably short time. The new head frame is completed. The new air compressor, with capacity of 35 drills, has been running some weeks. It met with an accident early ips-its operation which disabled it for some time, but has been repaired a1d is in first class condition, doing good ser vice.
 The Oliver shaft. sir,ce the compile ..,ca of the first gsilroad spur some months ago, has been gradually taking the burden of york off the Irish Mag shaft of the Calumet & Arizona. The Oliver is pgw rrrr?ducing about ene- third of tie ore thtl 1t this thine is send. ing to the shelter, the other two thirds /coming from the Irish Mag, NO ffxeS ratio of production is to be es- taHlished between these two shafts, tRe output from each being governed <by the best ore mixture that can be se- ! cured and by other conditions.
 1 It is probable after the Oliver shafts i hoisting engine is completed and it can be worked to it's limit that the | Irish Mag shaft will suspend work for a short time while it is lined up and other weaknesses of minor i'm portance that have made their ap- pearance, such as cavings in some places, during a long period of un- remittfng service, will be repaired. The Irish Mag has a depth Of 1,250
 feet and the Oliver 1,200 feet. the bot
 com of each being on the same hori- zontal. plane.
 The Buckeye Drift.
 TifeIvery favorable ore development in ti9cSBuckeye claim of the Calumet
 & Arizona continues. This develop
 ment was secured by q crosscut enter ing the north side of the Buckeye , claim from a. drift at the 1,00Ofoot lleyel. This crosscut has now pene' , trated about 300 feet, or half the dis , tance across the claim, and has been
 continuously in ore all of that distance The ore is now of slightly lower grade than at first The crosscut is
 proceeding steadily southward toward
 the Supplement claim of the Lake Su perior & Pittsburg.
 Crosscuts are now being started a f the 1.l00-foot level to drive under the : same ground in the Buckeye that has , been opened up on the 1,000-foot level . It will be necessary to drive about 3O' feet to come into a position vertical! , beneath the point where the ore wal i, first encountered, and consequently . distance of about eco feet will be re ' quired to get in as far as the 1000 foot level has already reached, whil' , the crosscut to the boundary separat : ling the Buckeye claim of the Calume
 &. Arizona from the Supplement clain
 of the Lake Superior & Pittsburg. i. drift. extending in almost a straigh !. line connects the 1,000-foot level o : the Calumet & Arizona's Oliver shaft ' A winze 50 feet high, necessitate' . by the difference in elevation of tn 2 two shafts, connects the two drifts 2 These openings prove up an extensty !. stretch of ground.
 l. At The Shelter
 h At the Calumet & Arizona smelte
 the tOur iurudCeo ehiSddS SonuPtSSO 2 are sufficient to meet all requirement n until a considerable increase in or j sisipments from the group pf fiv Is properties is attained. The foundatio e for the fifth furnace has been con if pleted for some time and the prime ,- nal portion of the equipment is on th
 ground ready for erection at any tim 1. that it is desirable to do so. Thi F. step is not contemplated, however, uI !, til fhe demands arising from increase