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Mr. Jim Herron Page 2 <br /> Belt Specifications: <br /> 1. The belt gallery will consist of 35- to 40-feet-long sections of <br /> conveyor gallery elevated on bents to provide minimum ground clear- <br /> ance of 10 feet. Elevation of the belt is necessary because the <br /> four to five feet of winter snow depth would prevent satisfactory <br /> belt maintenance. <br /> 2. Design is for a 36 inch wide belt. Present systems consist of <br /> 36 inch and 24 inch belts in series. Although a 24 inch wide belt <br /> would have excess capacity for the design refuse disposal rate, a <br /> 36 inch wide conveyor was selected to provide additional protection <br /> against temporary overloading and belt spillage resulting from <br /> overload. Belt speed will be + 350 feet/minute. Conservative <br /> carrying capacity is 450 tons/hour or 75 percent of plant raw coal <br /> design capacity of 600 tons/hour. <br /> 3. The belt drive, located in the transfer tower, is designed for a <br /> 1800 wrap which eliminates the need for a "snub" pulley on the <br /> "dirty" side of the belt adjacent to the drive pulley. This design <br /> allows the installation of a minimum of two belt wipers adjacent to <br /> the drive pulley before the dirty side of the belt contacts return <br /> hardware. <br /> 4. The belt drive and wipers will be enclosed in a heated house to <br /> prevent ice buildup on the wipers in freezing weather. <br /> S. It is our intention to vulcanize most of the belt splices to reduce <br /> splice spillage and wear and tear on the belt wipers. <br /> 6. The belt will be tensioned by a gravity take-up located inside the <br /> plant structure so as to be protected from freezing conditions. <br /> 7. The bents supporting the belt structure will be supported on pile <br /> footings and/or spread footings. <br /> 8. The belt structure will use bolted connections between bents and <br /> conveyor structure that will facilitate removal of the belt and <br /> re-use of the structure when no longer needed. <br /> It appears that the 36-inch plant refuse conveyor is well within the <br /> criteria established for minor revision and can properly be considered for <br /> same. Your prompt decision is vital to us because we need to schedule <br /> installation of the belt to coincide with the plant vacation shutdown this <br /> summer, and the other work we plan to do at the plant during this period. <br /> Please advise if additional information is needed. Thank you. <br /> Sincere,ly; <br /> rice Fresiaent <br /> E;ciosur.,s <br /> 6 <br />