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Mica Lode—Permit M-1977-144 <br /> Technical Revision TR-01 <br /> Cross section diagram of benched hi hwall <br /> Walls are 1.25HAV and 40 feet vertical <br /> Benches are gently sloped and 25 feet wide <br /> Overall gradient of benches and walls is 1.9H:1V <br /> 13AaFILV <br /> GKOWT14 M6pj vM <br /> r <br />