Show JENNINGS ON NEVADA DOUBLAS In His Report to Manager Walter WalterC C Orem Mining Engineer Tells About Big Tonnage ONE OF GREAT COPPER MINES Or Of TImi Se Jolts Of On 01 Oh or I OO not Ions on lal There Thoro Is the ho raining mIning In iii this chy city who believes the tho NOlda Douglas 1 t I be biggest PropertY In E I 1 who I in 10 On nn ot of this attractive mile mine two tO weeks s mige aso h 1118 In the hands or of Manager e Un 1 cc Oft jul JUI In imm fron from lie ho sav In docu merit ment It Is destined to 10 become oats of the tho most widely known copper proposItions In this country countr iIi h Jennings figures that there are uro tons of ore oro In the tho Nevada Douglas that w will average 3 per cent copper find treating 1000 tons pel per day on the basis tt hf I a market ho sees seus nn nfl annual not proU Profit ot of 2760 whIch is 15 moro more than per pel cent ot of the tho capitalization The Tho cost he says should hot exceed S 5 cents per pound The Tho engineer gives I a description ot or the tho mine mind Is Its ore oro bodies attention to Iho ha largo large deposits of high grade ore For the ox oxIde oxide Ide Cres ores Mr recommends treatment by some leaching process fOr br fOrthe the medium grade ores the tho magnetic process similar to 10 the thc theone one recently tried Olt out nt at tim tho In the Iho same distrIct and the thu blast blasl furnace for tor the tho hinal treatment of the tho concentrate Int and smelting ore The tol fol following lowIng extracts lre are taken from the re cc report port ot of Mr Ir J Jennings OW OWNS S LARGE GHOUl The 29 claims owned by the Nevada NOda Douglas Copper Mining company con Lain tons or of ore lh an av average average copper content ot of 3 percent per By building a railroad approximately 20 mies miles tong long to connect the mins mutes wih Ith the Southern Pacific system at ka a at I a cost not to exceed the tho erection ot or a cOlleen concentrating plant wih I a capacity ot of 1000 tons per day lt at ata n a cost of and n it smelter smeller ot of tons daily capacity at a cost ot of un an annual output ot of 2 pounds ur eb copper can he be Produced nt at u a cost In New York of 8 cents a pound or an annual or of when c l at t 20 Celts The Tiie following u ot of Iho ho mines oro reserves and are arc glen given on which my conclusions are arc had The Tho property ot the com company pall cs 2 23 mineral minerai locations lOot 10 of ofa T a Ilch are being patented and 19 10 held b ble by title le under locations These mineral minerai with land and with lute rights 11 In miti vale valley comprIse acres the miling mining locations being In one group located 01 on the west westI I Il I ot of the tho Mason Inson valoy valley mountains at nn an average elevation ot of foot feet above sea sea level TIE TIlE ORE BODIES The deposits of the tho Yerington ills dis district lre are classed us its contact Pub ore deposits by economic geologists and may be described as masses ot of metamorphosed and mineralized limestone restIng upon un an o granie granite having furnished the tho necess heat and heed heated mineralized solutIons to culvert convert tho adjacent Ime limo atomic slone Into I IL rok rock Impregnated wih with copper ore In addi to these areas of rock the tho same mineralizing solutions have havo filled fault wIth copper ore the district contains both hoth great gleat bodies of rock roel resting on the granite and In the marbleized limestone the The ore I in Ind and lre are In lint h by the tue extent of the garnet zone I It becomes necessary to deter maine Is its area From rom sur surveys voys veys made b by lie tho engineer the lre area or of the tho outcrop of nut net rock on the Francis Douglas Lookout and Sunlight to square feet teet A tunnel which wih with Is its and amid cr Is feet Coet In iii length has been In tue garnet garnot rock on tho Douglas caim claim and andi Is i 90 feet below the apex or of the tho hil bill 1 a has haR been stink SO feet below time the tunnel level al all on the copper garnet t rock this gives lt itt this point polut II a thIckness ot if feet Ceet for the garnet for milon This The which the he unet 1200 1209 tol south or of orthe the lie I and feet teet cul rEillY It this would indicate lint it Ir the of granite was liar horl tho garnet zone zono would be 1 up feet hIck but we 1 no of jf determining time the dip ot of the therefore this II Is Of f saudi more mure Ihan to Indicate time the 11 lit la ei thick 00 feet However W we can safely assume nut aiL or of feet teet This Timi Into tile tho super tidal area orpa of square feet th tho reaul result iv y 10 the of cubit feel teet in hi am n Ion lt Ut Oe WI we wi trIll ima ha tills of oC ot 21 oct feel gives tons MakIng due allowance fo for II of mock thul i nut not minor miner 1111 to 03 tl ton tion I it is In 1 my to 10 time the available ore at al tints Tb lh ore In tIn th zone i a I IL ot at and The TIte rock for I a of front S to 10 te feet t hits hal and the tho remaining party I cOI wih with carbonic trill achl or the minerai malachite astir It tie lild lute zone I Ian an all defined one n nt Ih meat Which both ores ore und and enriched html hUI halI handl or of t thu I 1111 ore Is ins Upward through Lh zone to 10 the u t ii I r ti II lustier grade rade lieu the IVI 1 rok rock In tImid probably ab ably represent nt 1 I haul If of I iii bih offered inure opel ha I I fu 01 m li t Ii j umi ising un o lulo lull uIs or lIus hits haN tv h UtI I lu tom 01 1 4 length t f O tei id 1 10 it II 1111 I ii ur oh I 70 rt AIM A is UI ii ii i i ut UI 25 tl iCell 1 hal ii I u Oll on u ii tl ii coo The diet teft feil helow tU lit Curia a l is 11 in the tho bilL 1110 con iii ii I ii t 2 23 11 COlt I hlo this Ull I h hi s I nil hat r I ore ure hOy is tl wI I i or 01 coo good Il e Iii t I out tt if tho iso Ul ii t I IN 1 In ore In iii hy hyI I Li d y ii pi l I ot Of a aI 11 I iii 11 11 ii I huIl i 1 f 10 I 11 er iii sul ru I Is til the inns t Pro 10 I h ht garnet h hn I UI 1110 0 II l tull I ale lilt lim the lie 1110 II mint tiu ole ome is II II u a rew ev lh c Iulo tho cove I ep SIl Sig ial known on the but uri I i J un and others will be found Cattail 1 TI The western of at the tho group Iro are on nfl it belt tt mt Ime lime stono which occupIed 1 it alave abo garnet beds bedR hilt which hul been dropped It itt least GOO feet vertically by byI I it N I K S 14 W V fault These limestone bel contain n it of due to the arc wel treil with copper ore A nU number ber of oC shallow shafts and o utica tn CUI hlo have been on those and ni mill show oxidized or ore ot of A tunnel COO feet foet vertically blow below the Douglas claim is 18 being along ole one of those ff 15 cures and wi will eventually tap the ore oro bodies II in Douglas hil lull mind form the tho malO outlet for fOI time tho ore The LUdwig mine adjoInIng thes claIms his hits n a shaf shaft 60 feet feel deep on n a unsure tor or tent teN shat shaft wn wat In rado old ore hut but at til point J acre und and have to thu bottom or of the shaft There Is no but time the limestone Wi Ihl b bo It very productive urea Judging from the el lotion ot of the h pita the 11 time tho but 10 no tonnage COli Cn bo be estimated nl at tho ho present tIme ri DOU DOUGLAS LAS TUNNEL fhe tunnel ils ox exposed o ed t a block of ground which contaIns tons ot of G ncr cent ore oro time tho re results lt of numerous humorous Shy By reducIng tho ho tonnage to 10 the average copper II Is 8 per POr cent This Is In Iii I it ty ideal mineralIzed zone moe be betaken taken n us mis representIng the vol voltie tie if at this class ot f rock In the Nevada Douglas ground samples he surface and shallow that to tin not exceed fo five foot lit gave frol from 9 91 per pcr cent to per cent copper With an au average of per samples represent fairly thin tho feet but nR aR this series itu Is all from the leached zone We 0 may from the of deeper workings as aa that lint the copper content wi wIll be somewhat higher and I pia cell It lt lit 36 3 net cent This is 15 staid to be bc betho the tho average of the tho mine whIch Is located In n a garnet ZOI zone on the eastern of the range Assuming the above value to he be correct tom for the entre entire garnet zone wo two have hao In the mine 10 tons of 3 er cr cent ole ore The Tue or oror ore or of the tho Douglas Douclas hil hill cnn caim bo be mined by the Superior mining system drifts beIng run under the Iho ore raises made macis from these theM drifts to the me surface and the ore blasted from around raises and dropped to drIft levels below and direct too mJ mill and smelter |