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• Where adverse roof conditions are encountered, spot bolting will be used to supplement the conventional roof control plan. In areas where spot bolting is deemed necessary, either resin or conventional roof bolts will be installed. Spot bolting will begin in competent roof and continue until competent roof is encountered again. If necessary wire mesh matting or rib bolts will be installed in main headings to maximize the stability of these entries. All conventional spot bolting materials will be chosen, installed and positioned in accordance with 30 CFR 75.200-7, 75.200-8 and 75.200-10 and approved by MSHA. Transportation. Materials will enter the main portals and will be transported to the working faces by battery powered vehicles. The main access roadways will be well maintained. Coal will be transported via underground conveyor belts. The feeder • breakers and crushers will break large blocks of coal into 8" or smaller pieces for belt transportation. A section belt will transport crushed coal from the feeder breaker onto the main underground belt conveyor. The coal will then be transported directly to the outside of the operation. Electrical System. Power will be brought into the mine and fed into a substation located on the Drainage and Sediment Control Plan Map (Map 6). This substation will provide power for both the surface support facilities and for the electrical underground equipment. Amine feeder will be located near the mine portal. Power will be provided from the station to the mine feeder at high voltage. The mine feeder will deliver power underground to transformers which will step down .voltages for distribution to equipment. Production unit equipment in each section will be powered from a power center. Equipment trailing cables will plug into the power center. The power system will comply with all applicable Colorado and MSHA rules and regulations. 2.05-10