Document n95rjkyeDn7xNx7EgorRo4Qea

wiMiii|lia.a| ' i i iii,ii.Mi)i.www wJ.i' "n,iieem...... . ^ i t i 1 9 A**-r ' LEAD INDUSTRIES ASSOCIATION__ 440 iXUNOTOM AVSNUS N*W rOA* 17. K. t. TCfciw iMic" rrreLOPiffST ak d REKcaco CT TrlZ~Tj'.^A)i irl/' J Alij t-^.A?^LTo L. B. Hart, Resident Engineer Awertcan aselting And R*fining Coepeay . lew Tort, I.X. X boro been ukxi Vo review mi wins devslopoents and resources of load oro 1b which the Aaerlcan Sseltlng and Rfiring Cccpacy la interested In foreign countries, Sow do* developments aro fxirijr easy to dote riba, but tbs question of future raoourcea involves a wide rang* of (imimi nd assiagtlons. Tharefora, *y consents with reference to resources are based upoc a bread assuaptloo that at laast an equally fat o rails eeocode and political cliaate will prwrall for the tloa specified as that which exists today, X hare not prepared any revised estinete of resources to apply In the event that warlatlona In netal prices, production ooste, or other factors cnange the profit aartin, out it la perhaps axicastle that la tbs Orer--all picture, at laast, the production rata as wall as tbs life of a nm sorace Increases or decreases with the profit wargln. In general, tbs Inertcan Seeltin^ and Refining Co. has continued to be setieely engaged In axploratlon work in both dowestio and foreign fields doing recent years, and while s o d s of the results of this program nay be knewn to ra, perhg>s the acre recast derelcpaanta nay not be. Except at the Buchans Kina, in Kewfoundland, no previously unxnown lead deposits of aajor laportaaoa hare baan found recently by us, tut our exploration effort In beth doeestio and foreign lands has been successful in the discovery and faverabla development of several edlun-elsed ora dtpoaita, eons of which are now being prepared for production. Xnelodad In this group aro two aino-laad-eilver propartlaa In Mexico. Cperations at one of these, the liuertra Senora Idas, at Ccaala', Sinaloa, aey tart In 1953, Xhas this nine attains its full projected production rate, its outpwt should approxlsata 5500 short tens of lead annually. A second property, the old Plemcsas kins, near fcoearlo, also In Sinaloa, is being actively explored and developed with a possibility that production will be started In 195b. An estlsated nornal annual rate of 6,000 abort tons aey be attained by 1955. Particularly with the support of tbs two projects Just Mentioned, the comblned operations of all propartlaa la which iwerlcan Smiting And Refining Cocpeny Is intoreated in Mexico, are expected to continue to produce lead for the next few years at a rate equal to current production. At the Buchans Mine, In KewfcmUand, a swell but steadily Increasing pud of the current production is bsing derived fron the above nentloned recently discovered ore body. This dlsoovsry las been described In several published articles and was particularly referred to by Mr. fu T. OooArtn, when he addressed this Association la 19U9. This ore body has only recently been node aoeesslble Presented at the 2bth Annual Meeting, lead Industrie# Aseooiatlon, prll 15-19, 1952, Chicago, Illinois. f 'W W W iiiiiMPMIIB ........ .. i ^Vlidirtoifi it Wm LIAI63?4 .w -v*. ^ miiir ! * U H. Bart 2 by completion of tha now Rothsnasr* Shaft with connections on th* 3rd to 9th levels, inclusive. Sow of thii work directed tcwird preparation of tho or* body for production ha* disclosed additlor.il or* not included In aarliar ressre* estimates which were based olly upon diamond drill r*ault*. It la no* considered probable that thla or* body will aupport Buchan* lead production at tho currant rat* of approximately 19,000 abort tone par yaar for more than tan year*. It la lnterastlnc to note that another entirely new ora body la new thmght to exist down dip below the lxpcrtant acne Just described. Thla possibility 1* based upon result* obtained in several drill holes 2,500 or nor* feat in depth. Becauaa of tha (rest oost of further prospect drilling to these depths, tha Rothe me re Sieft has teen sunk to a depth of 2,530 feet and a station established at tbs 2,325 foot level. Trcm this, a lone prospect baadlac will be continued for a total distance of about 3500 feet to provlda a acre convenient baa* froa which further axploratiao of this pronl sin; son* sty be carried forward by drilling or other mean*. Per aavaral years, American smiting And Refining Ccopany has bean conducting an exploration program upon a Crown lend Concession, including 6-250 *s alias la addition to tha original A.h.D. Lease, all in tha vicinity of Buchars. Although this work has been In progress for several years, last aicmter 553 sq. ailss ear* explored by five geological field parties. This work has not disclosed ary lead showings to data, but the program will be resumed this luasr season and continued thereafter until the entire eoaoe-aioo haa bean investigated. In Australia, Mt. Isa -tine* Ltd. has taken an exploration concession covering approximately 7b.5 sq. xllea, situated north of tha Vt. Isa iilne. "ithin this area at HarsUebar Hill, a promising lead bearing sane, geologically tiadlar to the kt. Isa ore bodies, has been disclosed in preliminary drilling, but, because of incomplete testing, tonnage estimates have not bean made to dat*. The Mt. Isa Mine, itself, is currently producing about 39,200 short ten* of lead per year. The nine is known to have very substantial proven reserves of lesd-xinc ore. In addition to copper or* bodies which axe generally separated froa the lead-iinc ore bodla*. 4 In Western Australia, at tha Prothe roe Mina, production of lead was begal during the year at a rate of about L, 530 short ton* per /ear, Thii is a now undertaking on a snail bet high grad* depoclt. In Peru, mill construction at the Chilrte Min* will be completed late la tha second quarter of this year. Production It ejected to be at a rat* of 3,600 short ton* cf lead par year. Thla Is a snail sine-lead-silver proparty, which ass acquired after examination In 1929. In Mlgerls. near AbakalDd, American Sasltlng And Refining Canpaoy has taken over Ihc exploration and development of properties held by Mines Development 8 Syndicate (~**t Africa) Limited. Exploration to date lima been largely by diamond drllillng, although work through two or acre shafts has been started. The lead* sino ore oocure In lenaea along strong ansar rot.es in shalay rooks. yMwsp'nu 1 > mJJwrmMmmnmnminm hffPPWWTjhtiufpp.ufiijjpw.pgyp *OTf LI A163 75 m A L. H. Bart -9- A Special Exclusive Prospecting License covering an area exceeding kOO eq, tiles In area haa been a rantad to liirjj Development Syndicate and to data only a port of this haa baan expired. This special license appliee to a aalaetad portion of a 1200 aq. alia general prospecting concession. 7ha final selection of tha special license area was aada after a preliminary geological investigation conducted by tha Syndicate durln* a period of about five years. If development.* continue to be favorable, the proprrty vlll probably be put on an operating basl* In tha near future. rhile no final plans have been formulated, preliminary thidfclng baa baan in terms of a plant ehioh may produce at a rata of 15,000 short tai of lead annually, Basidas tha axlensive exploration and developaent work In progress within tha United states, The American Smelting and Refining Conpany 1* conducting a ocr-iidar- able ascot if exploration work on other properties In various other foraign countries, but It la too early to make any predictions now sa to tha ultimata outcome of any of thin work. n|BPip|wvw"!uiipp!UJ!Liip^ dlMMHi*