Bisbee daily review., 1914-02-15

III tne current numDer or ms au- mirable publication, Iron Ore. MT. Geore A. Hewitt. Editor and Publish CT. has an unusually instructive and entertaining description of the New Cornelias property in the Aio Dis trict. Mir Hewitt secured the material for his article during recent trip to Pima county in company with Capt Jehn c. Greenway. After recounting the early history of the property and the manner in which it was called to Capt Greenway's attention. Mir New it writes:
 Captain Greenway was interested and finally visited the property. What he saw appealed to him strongly. Ris- ing above the general level of the floor of the desert was an cutcrop ping of copper ore that reached a height of 125 feet for a considerable longitudinal distance. This great cen tral core extendci fin northwest by southwest directi.n for about 2,200 feet. Its width was from 1 800 to 2,50O feet
 IT WAS ALL COPPER ORE
 Naturally suor an outcropping made an impression on Mir. Greenway. He was familiar with handling vast ton- nages of material He became ac- quainted with big values while en- gagged at tue Carnegie furnaces and mills, and later with much greater quantities in his development of the sandy ore deposits at Sanistec, Min nesota. for the United States Steel corporation, where millions of tons of both ere and waste were annually m-ved Mir Greenway was also at the head of the great washing plant at this location, invented vital portions of it from which like. at other places. he is now obtaining substantial roy alties, the mills being a splendid sue cess
 These millions of tens of ore pro truT.ng from the bosom of mother earth were most attractive to him. He made as careful an examination of the property as he then could and the out t-me of 1t was that his company i'm structed him to secure an option for purchase, the basis being SS00,0O0.
 A SYSTEM OF PROSPECTING
 The practical ttlny was a thorough system of prospect work. lt was all i'm poftant to know the extent Of the ere deposits and what they really con taned in the way of commercial grade copper
 HOW IT WAS DONE
 Work to determine quantity and quality was begun here in December 1911. Diamond drills were employed and the ground Blocked out in squares of 200 feet At each intersecting cor per hole was t-red Eighty-four holes were put down, representing in all 25,O0O feet of that kind of testing. The area workei on was 2,20O by 1000 feet. At the conclusion cf this work there were i6 of the S4 holes bottomed in ore. 6S of the holes had passed through the ore.
 The deepest enc was 625 feet, with the hole bottom in ore.
 This drilling work completed, a test shaft was sunk upon eery other drill hole or on the corner cf every block of 400 feet
 Then there was a channel cut down on every side of these test shafts.
 A shaft was sunk near the north ern end of the deposit. drifts from the bottom and in various directions and upraises from these drifts put into the ore deposits, some of them being run thrc ugh to surface
 Could a more systematic method have teen employed in arriving at a test of the amounts of ore here ex- isting?
 AN ELABORATE ASSAY TEST
 To .etermine the quality Of the ore. samples of the drill ceres were taken every ; feet When no ore was made they took the sludge from the hole.
 From the test shafts sample was taken from every 7th bucket
 From the channels cut in the sides of the shaft samples were taken every few feet.
 Fr.m the main shaft at the north end Of the deposit samples were taken every 7th shoveful, and this method was employed fin the drifts and up raises. There were many thousands of feet of drifting in the property.
 In the company's main office at Warren, Iron Ore was shown an i'm mense vault fined with thousands Of little tin boxes representing the as' sayed material from all these dia' mond drill borings. test shafts. chbh' nels. etc Mir Thomas cowperthwaitc, assistant chief engineer, can instantly nut him hand on the sample represent' ing any five feet of grtund drilled or cut Ey shafts, drifts or raises. Moth ing could te mere systematic or com plete. That the company knows post lively what the Al. copper deposit consists of is certain
 The tonnage of Cooper Ore
 The amount cf ore developed in the foregoing way Nas very large, encush tc keep the oonipAay active mai'y