Show THE HOLMAN DRILL from lk mining lining science tile the mine and smelter supply company of new york denver salt lake el paso and the city of mexico has acquired the exclusive agency for the holman drill in the united states and alaska the holman drill has made records for economy in the bg mining centers of the world winning first place and in the recent south african drilling contest in which it outclassed eighteen competitors though it has forged its way ahead in the south african mining districts and has now occupied this place for some time it is a comparatively new arrival in the american field it has gained its position through Z merit and bids fair to enjoy a like distinction in this country to that it has earned in africa the african tests were made under the most exacting and unbiased su pervis on this contest exten extended died over a period of nearly a year and in five different mines under tinder various superintendents the different drills in the contest were change from time to time to new headings or slopes and different operatives provided so as to effectually eliminate the personal equate equation on every item of expense that could properly be charged up to drilling cost such a as S labor steel drill sharpening compressor expense oil and drill repairs was taken into consideration and at the conclusion of the test the holman 2 inch machine drilled feet at a cost of per foot or an expense of for spares spare sand and stores against for the nearest competitor when it is considered that the conte contest st was held at an expense of something like borne jointly by the transvaal government and chamber of mines for the sole purpose of finding the best drill their conclusions clu are worthy of consideration |