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f <br />7 <br /> <br />J <br />, <br />( ? <br />I <br />f <br />r <br /> <br /> <br /> --WHIRLWIND MINE <br /> <br /> PORTAL <br /> <br /> '(Al) <br /> <br />'IT ORE, <br />ZONE <br />LEGEND <br />- SURFACE FACILITIES AREAS <br />CURRENT WHIRLWIND DECLINE AND WORKINGS <br />PHASE I DRIFTS <br />- CURRENT PACKRAT MINE WORKINGS <br />- FRESH AIR FLOW <br />EXHAUST FLOW <br />0 600' 1200'