2014-07-08_REVISION - C1981044 - Laserfiche WebLink

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No. 5A Mine Conveyor (Overland). Coal produced from the No. 5A/6 Mine was transported by a 48 inch slope conveyor through the No. 5A portal to the 48 -inch Overland Conveyor. The 48 -inch Overland Conveyor transported the coal across State Highway 13 and the Williams Fork River to the Stacking Tube and Primary Raw Coal Stockpile. The Stacking Tube and Coal Stockpile are located near the reclaimed No. 5 Portal Area. Once the overland belt was put in, all coal from the No. 5A Mine longwall system was transported to the facilities area via the No. 5A Conveyor. All coal from the No. 6 Mine is transferred via this same conveyor. The No. 5A slope conveyor leaves the No. 5A Portals and terminates at a Transfer Building which transfers the coal to the 48 -inch Overland Conveyor. 48 -inch Overland Convey. The 48 -inch Overland Conveyor was constructed in 1985 to allow coal to be transported from the No. 5A Portals to the coal handling facility. Construction of the overland conveyor required approvals from the Colorado Department of Transportation (CDOT) to cross State Highway 13, and from the CMLRD to cross the 100 -foot stream buffer zone associated with the Williams Fork River. By documenting that there would be no adverse impacts to either the Highway or River, the required permit and construction approvals were obtained in 1985. Documentation of CDOT approval is presented in Exhibit 19, Overland Conveyor Highway Crossing Approval. The overland conveyor is covered for dust control, and has been included in the MCM Air Emissions Permit. A copy of the Air Emission Permit from the Colorado Department of Public Health and Environment is included in Exhibit 2, Other Required Permits. The 48 -inch Overland Conveyor terminates at the Stacking Tube. Stacking Tube. The Stacking Tube is approximately 85 feet in height and 12 feet in diameter. Coal passes through the Stacking Tube into the Raw Coal Stockpile. Primary Raw Coal Stockpile The Raw Coal Stockpile is designed to accommodate over 210,000 tons of run -of mine coal. The basal area of the stockpile storage area is approximately 210,000 square feet. The stockpile was constructed on a previously disturbed area and as such, no topsoil was salvaged. Typically, approximately 60,000 tons of coal can be stored in the stockpile. The maximum capacity is used only at times when coal production exceeds delivery schedules. Usually, this will occur when the longwall system is being moved to begin another longwall panel or trains are delayed. The CDPHE Air Emissions Permit and CDRMS approved footprint will dictate the maximum tonnage in the stockpile (Note: There is currently no coal stockpiled at the Mine). 30,000 Ton Raw Coal Stockpile. A 30 000 ton coal stockpile, located near the No. 9 Mine Portal was designed as a supplemental stockpile for low- quality coal trucked from either the primary raw coal stockpile or the 5A Portal. This coal was stored prior to blending, when conditions allowed. This stockpile was removed and the associated area has been reclaimed. Reclaim Tunnel and 42 -Inch Convey. A reclaim tunnel is located beneath the Raw Coal Stockpile and the associated conveyor is used to transport the coal from the coal stockpile to the Screening and Sizing Building. Screening and Sizing Building. The Screening and Sizing Building contains the equipment used to screen and size the coal to produce a marketable final coal product. Within the building are screens, a rotary breaker, and associated coal transfer conveyor belts. In the Screening and Sizing Building, coarse reject material (rock) is separated from the coal, and transferred by conveyor to trucks, which haul the reject material to the permitted coal refuse disposal site. Screened and sized coal is then transferred to the 36 -inch Overland Conveyor. Refuse and Lump Coal Bin — A short stub conveyor discharged coarse refuse and over -size coal to a bin adjacent to the Screening and Sizing Building. The refuse was hauled to the permitted refuse pile and employees were allowed to recover the lump coal for home use. The stub conveyor remains as part of the Screening and Sizing Building, but the refuse /coal bin has been removed. 36 -inch Overland Conveyor and Sampling Building. The 36 -inch Overland Conveyor transports the coal to the Sample Building where the sampling equipment periodically cuts a coal samples for analysis for quality control purposes. Silo Transfer Conveyor (Overland). The Silo Transfer Conveyor is an inclined conveyor, which transfers the coal to the 10,000 ton Storage Silo from the Sample Building. TR14 -36 2.05 -10 Revised 06/23/14