Daily Arizona silver belt., 1907-07-31
MARVELLOUS CLAIMS FOR
 A NEW ROCK DRILLER

c, c, Harris of Findlay, Ohio, who
 has been operating in the Big Horn
 mountains, and has over fifty claims
 that he is opening up, was in Phoenix on his way to Fl Paso and home He showed some very good specimens of copper bearing ore, secured from the thirty-fve foot level, He expects to return in September and begin more active development work on his claims. He has been an oil operator and has now a large lease of wells in Indian Ter. ritory. He says that he has put about s60,000 into the game of mining through other people, but now intends to look after the squandering of it himself, However, ne hopes to get some returns for his investments.
 A Phoenix paper says Mr. Harris was explaining new rotary tunnel drill, invented by J. P. Karns, man who has years, and which invention if it proves as practical as experiments with the first machines indicate, will revolution, iae methods of tunnellng, Mir, Harris is stQckholder in the company which is not advertising or trying to sell shares, but Is going along quietly and has at an expense of sl2i,000 obtained patents in every country In the world, This drill was invented about seven years ago and Mir. Harris was the first packer, but a temporary financial em barrasment caused him to abandon it for time. Later, another company was organized and has built drill at the American Tool Machine Works in Cleve- land, and has made tests at Magnolia, Colo,
 The engineers who listened to Mr. Harris statements smiled at his claims, but he said he expected that. He is willing, however, to back his statements with the coin. This drill, says MT. Har- ris, has been built with diameter of eight feet and it weighs four tons. It has ratchet movement, chipping out the rock, the cuttings being sluiced out with water, which also keps the drill cool. On the face of this drill are 570 molars or cutting edges of the finest and toughest steel. It takes $50 cubic feet of air at pressure of 100 pounds per inch to drill hole 4 feet and 3 l inches in diameter with a drill of this 1 size. With larger drill, of course. it requires more power.
 The test machine at Magnolia has drilled seventy-foot tunnel in length in hard granite. In the presence of | leading engineers in Colorado this drill | cut 7H inches in l0A minutes, rate of 312 feet per hour. Mr. Harris said yesterday that he was ready to wager sl0,000 place the cash in bank. against another $l0,000, that an eight foot Gin diameter) rotary drill would cut 100 feet in twenty-four hours in the hard. | est kind of rock. He is ready to back up this with money and give $l00 as a for the work These are startling figures and if the drill will do what he thinks it will, it means great revolution in building tunnels, subways and irrigation canals through rock.
 Walker Brothers, bankers, of Salt Lake City are buying machine for work in this state, the nature of which Mir. Harris has not learned. Proctor & Gamble, who are the manufacturers of | Ivory soap, are buying an eight foot drill for some irrigation tunneIing in San Bernardino county, California.
 The cost of operation of the drills of this size is yet a question, perhaps, but MT. Harris thinks it will be less than the cost of the powder to blast out the same sized hole by the old Then the rapidity of the cut ting is an item that must be taken into as it will drill, if sue. cessful, as much in day of twenty four hours as two men by the old meth ods could blast out in six months.
 The machine for the Salt Lake City people will be in operation about the middle of next month, when it will be given thorough test.