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r~ <br />~~ <br />• <br />~~ <br />G~ <br />~~ <br />J <br />and the first coal was delivered. The mine produced coal from 1903 until 1974; the highest <br />production year was 1920 when 103,622 tons were produced and 110 miners were <br />employed. <br />Included within this site are the tipple, sales Itottse, power plant, lower mule barn, <br />powder house, blacksmith shop, and mine portal complex (hoist house, upper mule barn, and <br />1'an foundation/Housing (figure 3)). The mine office and associated garage/shop area is <br />included in the previously recorded site SDTI22. <br />All that remains of the tipple are the concrete foundation footings for the steel piers <br />in an area shat measures approximately 90 feet by 75 feet. This tipple was constructed in <br />1928, and was constructed of steel; it replaced a wooden one completed in 1907. The new <br />tipple was equipped with a rotary damp, a hopper and feeder, shaking screens and conveyors <br />to load cars on four tracks. A crusher was added in 1937. The tipple was dismantled by <br />Adolph Coors Company after 1977. A coal sales house still stands south of the tipple <br />foundation. Made of concrete with a steel roof, it measures approximately 8 feet by 18 feet. <br />Built on a 26 degree (lower) and 33 degree (upper) incline, the [nmway was a 1200- <br />foot-long, double-track gravity plane. Steel cables were attached to cars. Each cable went <br />back approximately 300 feet into the mine where it was attached to a separate drum within a <br />common shaft. One cable went over its dram and the other cable under its drum, so that <br />when one drum was winding ttp cable, the other cable was umvinding. Loaded cars <br />descending on the gravity plane would be unwinding cable, and the other drum winding and <br />pulling the empty cars ttp the plane. The "pit" cars, used to haul coal from the mine to the <br />tipple, were designed for a capacity of two tons. The front end of each car was I S inches <br />higher than the sides and rear. This was to keep coal from sliding off as it descended the <br />steep incline. Cars were connected by link and pins and when disconnected, controlled by <br />Band brakes. each car was weighed on the scale at the tipple and dumped into a storage <br />hopper. A trip was usually made up of four loaded pit cars descending and pulling four <br />empty cars up the plane. A [rip could be stopped at any point on the tram and its speed <br />controlled by the wheelman in the pilot house overlooking the tram. <br />The power plant building, completed in 1922, is a 3.5-story brick and concrete <br />structure that measures approximately 55 Feet by 100 feet. it contained two boilers in the <br />east room, and two 375 kilowatt, AC turbine-driven generators in the west room (only one of <br />each remain). It replaced DC generating plant [hat was built in 19] 5. <br />The lower mule barn which stands on the south side of the old State IiigMvay 133 is <br />shown in the colored photograph from the 1930's, but its original date of construction is <br />unknown. It is a large, 2-story, wood-framed, metal-roofed structure measuring <br />approximately 60 feet by 40 feet. It has an associated l2-feet-tall, 20-feet-diameter metal <br />feed silo, a corral and Held area for the mules. Mules were an essential part of the work <br />21 <br />