Bisbee daily review., 1911-01-06

ferent times, drifts and crossc crKs agsregating 2.Ss0 feet in length, have been re-sampled under my direction to check the sampling and assaylng The J e Bush Shaft is equipped with boilers and steam hoist, while the other shafts are 400-h.p. boilers. and a 15-dril compound steam com pressor. A machine shop is in the course of er5djon It will bo com pletoly ocipped with lathe. drill press shapor. bot and pipe cutter eteam hammer. etc.
 An experimental mill of abeH, 7s tons daily capacity is practically comp eted it is fully equipped t1 make exhaustive concentrates tests. on the results of which tae design Of a min having the. capacity c: 5000 tons of ore pcrday will be based.
 The ore reserves have been driver into two classes. namely: Developed and Partially Developed, All develop ed orc s bounded either by drill holes or undergr und workings moi ID excess og 200 feet apart lu areas not yet comp etey drilled. where ihe aoles were up to 400 feet apart. the ore has been classed as partially developed. but no ore has been al lowed where the drill holes were more than 400 feet apart. nor has any ore been allowed beyond the lines coinecting the drill holes In bl oks where both drill ho.eo and underground development existed, values have been averaged in pro r9rtion 10 the lengths sampled.
 Up to October goth, l estimate that there have been developed 12.- s96O00 tons of ore. averaging 2.oS Ter cent copper, and 5.6O4.10o tons of ore partially developed, makins the total developed and partially deyelored ere reserves 1S.0o0.60e tons averaging 200 per cent copper
 The td.al area developed and part ialv developed is 29.9 acres. This area is entirely on the eastern DOT ton of the eompany's property. and considerable extensions of this ore body are practically assured In the Woodson Tunnel. cn the western portion of the company's property there are several hundred thousand tons of ore developed. but this ore has not been included in the above calculations of ore reserves. The h. dlcations are that a large ore body will be developed in this portion or the company's property.
 In an area east of the Joe Bush Shaft. the eapping is only from oo , to 100 feet thick, and it may De nossible To mine the ore in this area bv opencut methods. In other DOT tions of the ore body. a cavihs system of mining will be adopted. A number of factors entering into the cost of producing copper cannot be definitely estimated at this ume' but aJer carefully studying the character of the ore ueposiis' the amenabilitv of the ore to eoncentra- tion and the general conditions at' fecting the cost of mining and treat ing the ore. I estimate that the cost of producing and delivering cope. in New York will be between an" a 1.2 cents per ID. when the fui' | DIant of 5000 tons per day is in oD e-ation The production of cooper from q plant of the ab've capacity should be about 45.ooooOo lbs per an1um.
 Under "Ore Reserves. t has been stated that there are 1s.ooOtoo tons os ore developed and partially de
 veIoned. It is practically assures thai extensions of the east ore pony v,l add a large tonnage to th" tnovn ore reserves. In the western ,.rt of the company's propeInS' U is tn.wn from the developments m .ba woodson unnel and from tht ~ort on adjoining properties. tha' +bore is another ore body in thls ST-
 tto, but no drilling has as yet ''eeH % sone in this part of the Propei's, Pp, |, is lhe intention to m'le tbor,urhly develop the eastern O,e 'lio' -,ovinp the drills 70