Show W I 1 n I 1 ft JK I 1 mining in canada popular science monthly mining alining is carried on by down the hills ol 01 asbestos bearing serpentine mile much as a it farmer cuts down ft a stack of hay bay or straw or by open quarrying on the level the rock is blasted out and the asbestos separated from the con rock ia is that ia is sepal abed by hammering from inferior foreign matter this 11 ing is a comparatively caay matter in the case 0 of X tho tile finer quality gj as it usually separates readily from the gangue but i in n the lower grades III u ell ia is experienced experience ia in separating the fibrous matter from the non fibrous at best there is a great waste e much of the abes asbestos is in thin and narrow veins n and I 1 18 i wasted as by the present mode at of I 1 operating it does not pay to separate ate this from the serpentine ser I 1 e A machine that will enable these narrow nari veins to be utilized is isie beaded I 1 eded when men cb bel the asbe tos los is graded according to purity color color I 1 and length of fibre fabre into three grades and anti bagged for shipment T the ie finest quality or firsts fin finds I 1 s ready sale at ranging from 80 to per ton too seconda fetch from S 50 to per ton tod while thirds may be valued at 13 to 05 per ton in good mines the yield of asbestos asbe atoa is from 3 to 6 5 per cent of the tile rock quarried and the coat cost of mining may be put do botn at lit 25 to per ton returns obtained by the geological survey of canada show how that for the year 1888 canadas output was wes 4 4 0 4 tons jolis valued at t the mines at and this is the output of nine different mines over three fourths f the tile whole was shipped to the united states small quantities going to great brittin Brit fin germany france ia and italy and being used in dome domestic stio manefa c tur ing |