Mining and Engineering World . To the northwesl oi the Big I a just over the high peak, is the Red Ilift 998 THE MINING WORLD November 1910. Extension. The continuation of the up-per vein- of the Big Casino is said to tra-verse this property near the crest of thehill at an elevation of 5000 ft., but owingto the ground being covered with i> new snow, was not visited. Lowerdown on the mountain, at an elevation of4500 ft., is a small mineralized zone fol-lowing a fracture in the country rod;having a course of X. 55° E. (mag.), witha vertical dip. The ore occurs in the frac-ture and bran
Mining and Engineering World . To the northwesl oi the Big I a just over the high peak, is the Red Ilift 998 THE MINING WORLD November 1910. Extension. The continuation of the up-per vein- of the Big Casino is said to tra-verse this property near the crest of thehill at an elevation of 5000 ft., but owingto the ground being covered with i> new snow, was not visited. Lowerdown on the mountain, at an elevation of4500 ft., is a small mineralized zone fol-lowing a fracture in the country rod;having a course of X. 55° E. (mag.), witha vertical dip. The ore occurs in the frac-ture and branching seams over a widthof 4 ft., the mineralization is chalcopy-rite and pyrite, in a gangue of quartz andcalcite. It has been opened at surface,up the face of a steep bluff, where it isexposed in a shallow draw, by strippingfor about Su ft., showing sunn- hunches ofchalcopyrite, copper carbonates and pj -rite at the intersection of the seams andthe main fissure, but not in any below this surface work a. Vein and Dike at Roosevelt Mine on NorthFor! of Bitter Creek. prospect drift has been run in along thestrike- of the vein for about -riH ft., show-ing on its north side, sonic stringers ofcalcite containing a little workings, 1500 ft. above timberline, arc buried deep in snow for 9 to 10months in the year, in addition to being indanger from snow slides. With the exception of the Red Cliff, towhich a spur from the railroad alongBear river will be built, the propertiesalong Lydden creek have a serious trans-portation problem to solve, owing to theirsituation high up a steep mountain nde,above timber line, exposed to slides andwith the surface free from snow for onlytwo to three months in the yeai Theonly practical way in which they can beworked is through crosscuts 1500 to 3000ft. long, driven from the base of themountain, which would tap the veins at adepth of from 1500 to 2000 ft. below the outcrop, according to the location of theporta
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