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West Elk Mine • A 72-inch belt conveyor carries coal from the storage silos to the over-the-track loadout. This conveyor has a capacity of 6,000 tons per hour and runs at a speed of 850 feet per minute. Total length is approximately 600 feet. The conveyor is covered by a semi-circulaz corrugated galvanized metal cover. The portion of the conveyor that crosses the North Fork of the Gunnison River is completely enclosed. Primary and secondary walkways were constructed along the conveyor. The conveyor structure is steel. Construction of three stacking tubes and an underground conveyor reclaim system was begun during 1991 and became operational in July of 1992. The approximately 100,000 to 120,000 tons of run-of--mine coal storage provided by these tubes is needed to handle the higher longwall production volumes. The storage azea will be expanded by moving a portion of the main topsoil stockpile to the south, creating an additiona160,000 to 88,000 tons of coal storage azea. Run-of- mine coal is fed directly to these tubes. Bulldozers push the coal into the hoppers feeding the underground reclaim system and into the crusher. The stacking tube facility consists of three stacking tubes ranging in height from 91 to 94 feet and are constructed of reinforced concrete. On top of each stack tube is a transfer structure. The transfer structures aze approximately 38 feet tall, open steel structures. The facility also includes a 60 foot tall feed conveyor drive tower and a 42 foot high crusher building. Both of these aze open steel structures. An as-built construction description is provided in Exhibit 68. Construction of a screening facility was begun in 1992 and became operational in February of 1993. The facility is used to sepazate over-sized material (typically consisting of rock) from the product-sized coal. The screening facility consists of an open steel structure with a maximum height of 84 feet and three associated conveyors. A 1,500 tons per hour high-angle conveyor transfers material to the screening plant from the crusher, product-sized coal is transported to the silo conveyor belt on a 1,500 tons per hour conveyor and a 300 tons per hour high-angle conveyor transports over-sized material to the rotary breaker. An as-built construction description is provided in Exhibit 68. Two silos provide temporary storage for product coal. These silos provide the storage capacity needed to accommodate MCC's production schedules and use of unit trains for shipping product coal from West Elk Mine. The reinforced concrete silos provide about 24,000 tons of product coal storage capacity. The silos were designed to reduce the hazard of spontaneous combustion by minimizing dead storage azeas within the silo compartments. A 48-inch width conveyor belt will transport crushed coal from the top of Silo No. 2 to the stack- tube. This stack-tube will be approximately 106 feet in height and will be constructed similazly to the run-of--mine coal stack-tubes. The transfer structure on the top and the reclaim tunnel and conveyor belt underneath the azea will also be similar in construction to the run-of--mine coal stack-tube facilities. A dozer trap and reclaim system to be located just west of the silos will similarly be constructed, as well. MCC uses apre-weigh, over-the-track type of loadout facility at West Elk Mine. In this facility, a surge bin receives the coal from the loadout conveyor. The coal is then transferred to a weigh • bin. Finally, the weigh bin drops a measured amount of coal into a railroad car via a chute. The capacity of this system is 6,000 tons per hour. Two, double-walled (self-contained secondary 2.05-3 8 Revised November 2004 PRI G