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2.0 OVERVIEW OF FACILITY OPERATIONS <br /> 2.1 Operations <br /> The scope of the Henderson operation can best be understood by separately discussing its four <br /> major components: (1)Henderson Mine; (2)URAD Mine Site; (3)Henderson Mill; and (4)the <br /> Overland Conveyor System. <br /> 2.1.1 Henderson Mine <br /> The Henderson Mine is located on the North side of Red Mountain near the confluence of <br /> Butler Gulch and the West Fork of Clear Creek. It is nine miles west of Empire, CO in <br /> Clear Creek County on the Eastern Slope of the Continental Divide. The elevation at the <br /> mine site is 10,400 feet. Access to the mine is gained by a 28 foot diameter vertical shaft <br /> which is 3,100 feet deep. Four other shafts service the ventilation requirements for intake <br /> and discharge air. Horizontal drifts (tunnels) at the bottom of the shafts provide access to <br /> the ore body. A highly mechanized panel-cave system of mining is being employed with a <br /> nominal capacity of 40,000 tons per day <br /> 2.1.2 URAD Mine Site <br /> The URAD Mine Site is a reclaimed mine located southeast of the Henderson Mine in <br /> Woods Creek Valley. This site consists of two reclaimed tailing impoundments, two <br /> plugged portals, water treatment collection ponds, and a water treatment plant. <br /> 2.1.3 Overland Conveyor System <br /> A conveyor belt system is used to haul the mined ore from the Henderson Mine to the <br /> Henderson Mill. The conveyor system begins as a tunnel below the ore body at an <br /> elevation of 7000 feet. The tunnel runs west for 9.6 miles, surfacing at an elevation of <br /> 9,000 feet. After surfacing, the Overland Conveyor System continues west and north for <br /> another 4.8 miles to the Henderson Mill Site. <br /> 2.1.4 Henderson Mill <br /> The Henderson Mill is approximately 22 miles south of Parshall, CO,just off of Grand <br /> County Road No. 3. The ore processing facilities (mill and concentrator) are located off <br /> the western slope of the ridge between the Williams Fork River and the East Branch of Ute <br /> Creek, Grand County, CO. <br /> 2.2 Hazardous Waste Activities <br /> Much of the waste generated at Henderson is from mineral processing and is thus excluded from <br /> hazardous waste regulation under the mineral processing exclusion found in 6 CCR 1007-3 <br /> 261.4(b)(7). However, periodically some potentially regulated hazardous waste is generated at <br /> Henderson, such as unusable products and various other maintenance related wastes. As such, <br /> the Henderson Mine may become an episodic Large Quantity Generator(LQG) of hazardous <br /> waste. <br /> Henderson Mine IRM <br /> March 2023 2-1 <br />