Show t t tUT UT UTAH AH LOPPER COPPER HAS PROVED UP ORE TO GREATER t n DEPTH U E P T H 1 Utah Copper has put down eight new exploratory drill holes hoes so far this year car and they thoy show that pay oro ore continues down to considerably reater depths than had previously been proved Tho The new net holes boles are mostly in in tho the central richer port portion on of the Utah Copper workings This years year's 3 ears ear's exploratory work while it will add no appreciable acreage to the developed area will m add considerably to tho the depth of proved pro ore and add a few million tons tons' to tho the developed and partially developed developed devel devel- evel ore reserves which t tood on on January January Janu Janu- ary 1 I 1914 at 33 tons of 14 per cent crade jrade rade says sas News 1 Bureau Tho The average depth of the ore oro bod body proved to date is well over ocr feet comparing with feet on January 1 I 1914 with 4 feet on ou January I f IJ 1913 with mth feet in 1912 and feet in 1911 The proved acrea acreage o over which these depths of ot ore extend has hasben been ben in increased from acres on January 1 1911 to 2531 acres on January 1 1914 While the tho em a average c thickness ness is some feet tho the actual proved thickness is somo some feet in in tho the middle portion thinning down to feet or less on ou on tho the ed edges es Fortunately too the middle portion is the richest grade rade rock reck and is softer and easier casler to mine The ultimate depth to which pay oro ore will bo be proved to extend can hardy hardly be conjectured A few years ago ao experts predicted that a depth of or OO feet would see the end of pay ore Last year hole 61 Gl was in pay par ore at depth of 1050 1030 feet from foot elevation an anthe and the nearby hole holo 48 sunk from level R was wag in oro ore oro at a depth of feet hole 3 32 on the east side of Bingham canyon can can- yon von shows sho's pay ore at jt a depth of 1000 feet Jeet It is not generally knot n that many of tho the drill holes bole were in rich ore when lost or abandoned and ana that at all points the proved depth of pay ore has been strictly limited to the bottom of the tho hole where abandoned Thus hole Xo No 12 12 near the bottom of the canon canon can can- on von was down 30 feet when it Was was lost lostIn lostin lostin in In 16 per cent cont ore an and no allowance was made for deeper extension of the theore theore ore hole No 23 j was as similarly f lot lost in 2 per cent ore Hole No 55 was down SOO OO 0 feet when abandoned in in ore Drill hole No o 71 71 iI now nov being bein sunk from the Transportation tunnel between holes 23 and 53 shows very cry encouraging ing results to date It ft i is down nearly GOO feet bebr below be be- low br 01 feet elevation and is still in ore This would bring brini it feet vertically vcr ver I below the surface It is considered not unlikely that the l ultimate ultimate- nate- nate proved depth o of PO pay rny ore In the central richer part art of the Utah Copper estate will m wel well exceed 1000 feet cot This when mined out v will convert con the foot cOO mountain Into a monster excavated pit or rather Inclined bowl tilted tOted nw inward t It will be more than a third of ot a cent century un though at nt tho the present rate of or mInIng before beor the depth of the bowl r requires Q am alteration In Utah Coppers Copper's transportation system the lie company's mining tem having In recent years yea des tub Into hardly more than a tion- tion railroad I n proposition This Is not jot to be taken ns nil Indicating that Utah h Copper system of or mining will necessarily continue as a f leam shovel sho II propoSItion from Irom benches around the lie mountainside or from benches around the Inside of the rhe tilted lilted bowl howl It Is un- un ri r tood that thA th management Is considering consid consid- ering the possibilities In a perhaps cheaper chaper system of ot mining tran transportation aft after r thi capping will Ill have ha b been ln rom oom- ly IT removed ed Is the tue mill hole o of ot mining It consists In putting v tin p from a Jeep deep underground round main haulage haul- haul age ag tunnel n R I Irlee rlee of raises branches and like trees the ultimate t rl reis R I opening o out on ont Hi t surface 6 Ore In is then blasted from fromI toni I Ili lie III edges es directly Into rind rJ down th these Re raIpa iid finds Us Its way BY Into the main maint t ti-n ti transportation rn Uon tunnel wit i without t hout further lie hs handling nIt n- n It Is un understood that the configuration nf nt the ore body boly and the matter of nr acc ac- ac r c tO td the i Garfield raila rail rail- nay a 8 from A 11 deep haulage tunnel lend themselves to such euch a si stem of or mining The question though h. h at present amounts to IC hardly Inore more than a thought which haS hae suggested It itself lf to th the ment |