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The main fans are monitored and controlled by automated systems which will <br />provide timely warning in the event of fan malfunctions. In addition to <br />the automated control, monitoring, and warning systems, EFCI also has a <br />regular program of inspection and preventative maintenance for all fans to <br />assure continued safe and efficient operation of the mine ventilation <br />system. In the unlikely event of a mine explosion, the fan housings which <br />consist of concrete slab foundations, structural steel frameworks, and <br />sheet metal covers are fitted with louvered blowout panels, designed to <br />maintain the integrity and prevent damage to the ventilation system. Upon <br />completion of mining operations, the fans and associated mechanical <br />equipment will be salvaged, the fan housings and foundations will be <br />demolished, and resulting debris will be disposed of in designated <br />disposal areas. <br />Shop/Office/Warehouse Facilities. Shop/Office/Warehouse facilities for <br />the Southfield Mine were constructed on the portal bench around the mine <br />portals. These facilities were constructed with concrete slab and block <br />foundations, a structural steel framework and corrugated metal exterior <br />• walls. The shop includes repair facilities for both surface and <br />underground production and support equipment. Shop facilities include <br />repair bays, a mobile overhead crane to handle heavy machine parts and <br />necessary equipment and supplies for machine lubrication, maintenance and <br />repair. It should be noted that EFCI also has limited underground shop <br />facilities located in each active section where equipment may be taken for <br />minor repair and lubrication to minimize production downtime underground. <br />The mine office facilities, located above the mine portals, include <br />offices for the Mine Manager, production and maintenance supervisory <br />personnel, engineering staff, payroll and purchasing, safety personnel, a <br />lunch room, safety training area, and changing area for mine personnel. <br />In conjunction with the shop facilities, EFCI also maintains warehouse <br />facilities for storage of spare parts and operating supplies. Dependent <br />upon the nature and frequency of use and their size, spare parts and <br />supplies may either be stored in the actual warehouse area, or in an open <br />storage area on the surface which is shown on the Mine Surface Facilities <br />rni2 -l7 <br />2.05.3-22 R Revised - January, 1992 <br />