Show NATURE HELPS TO DEVELOP MINE while driving a tunnel in the cortez mining in district the owners of the mine were about to install expensive machinery for ventilation when nature came to their aid and made the expenditure unnecessary says the elko nevada free press ventilation is provided in an unusual manner for the long tunnel at about the 1400 foot point an open fissure was penetrated and a natural of air through this fissure immediately cleared the tunnel of powder smoke arrangements had been made to secure a powerful ventilating fan but the use of this device was rendered unnecessary and a considered expense was avoided bp inserting the air pipe in the fissure an and d sealing the remaining space the outlet to this fissure somewhere on tenabo mountain has never been found but this mysterious crack in the solid rock nearly 1000 feet below the mountain top replaces power and equipment of no insignificant cost in providing air suction |