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Southfield Mint Minor Rni.rion Requtsr No. 20 -South Fan lnsrallation • 1 INTRODUCTION Energy Fuels Coal, Inc. (EFCI) currently conducts underground coal mining operations at the Southfield Mine located approximately eight (8) miles south of Florence, Colorado. The mine operates under alife-of-mine mining and reclamation plan which is the basis for the existing approved mining permit (Permit No. C-81-014) under the Regulations of the Colorado Mined Land Reclamation Board for Coal Mining (CMLRB, CRS 1973, as amended). As mining proceeds, mine workings are extended to develop and recover the existing minable coal reserves. Mine workings must be properly ventilated to provide a safe working environment for the miners and to adequately dilute any methane or other potentially hazardous gases which • may be released as a result of the mining process. As mine workings are extended, mine ventilation systems must be modified to maintain adequate airflow in both active face areas and mine entries. These ventilation modifications are necessary because movement of air over greater distances results in increased pressure drops due to surface friction and ventilation of expanded mine areas dictates increased airflow volumes. In order to maintain adequate ventilation as mine workings are extended to the southern limit of the minable reserves, EFCI is requesting approval of a minor revision to install an additional mine fan, along with associated fan housing, mine seals, and power systems, on an existing portal of the abandoned Monarch No. 4 Mine. The new fan installation has been designed and will be constructed, operated, maintained and monitored in full compliance with applicable CMLRB and Mine Safety and Health Administration (MSHA) requirements. The proposed fan installation will result in redisturbance of approximately 0.46 acres previously disturbed by the Monarch No. 4 Mine operations in AQ Inc. • P.O. Bnc 7710/8• Semnbav Spnngr, Cobrado 40177• (303)8A-6160