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Minor Revision Request No. 16 <br />Southfield Mine South Fan Installation <br />INTRODUCTION <br />Energy Fuels Coal, Inc. (EFCI) currently conducts underground coal mining <br />operations at the Southfield Mine located approximately eight (B) miles south <br />of Florence, Colorado. The mine operates under alife-of-mine mining and <br />reclamation plan which is the basis for the existing approved mining permit <br />(Permit No. C-81-014) under the Regulations of the Colorado Mined Land <br />Reclamation Board for Coal Mining (CRS 1973, as amended). <br />As mining proceeds, mine workings are extended to develop and recover the <br />existing minable coal reserves. Mine workings must be properly ventilated to <br />provide a safe working environment for the miners and to adequately dilute <br />any methane or other potentially hazardous gases which may be released as <br />a result of the mining process. As mine workings are extended, mine <br />ventilation systems must be modified to maintain adequate airflow in both <br />active face areas and mine entries. These ventilation modifications are <br />necessary because movement of air over greater distances results in <br />increased pressure drops due to surface friction and ventilation of expanded <br />mine areas dictates increased airflow volumes. <br />In order to maintain adequate ventilation as mine workings are extended to the <br />southern limit of the minable reserves, EFCI is requesting approval of a minor <br />revision to install an additional mine fan, along with associated fan housing, <br />mine seals, and power systems, on an existing portal of the abandoned <br />Monarch No. 4 Mine. The new fan installation has been designed and will be <br />constructed, operated, maintained and monitored in full compliance with <br />applicable CMLRB and MSHA requirements. <br />The proposed fan installation will result in redisturbance of approximately 0.4 <br />acres previously disturbed by the Monarch No. 4 Mine operations in the 1930's <br />o: xodi pq a ed revnof 8.680 <br />f 2/20/81 epm 1 <br />