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Table ne Equipment <br /> Number � <br /> Cat D51<2 LGP 1 <br /> Compressors <br /> Ingersoll Rand EP 200 200HP 1 <br /> Ingersoll Rand EPE 250 250HP 1 <br /> Ingersoll Rand EPE 300 300HP 1 <br /> Notes: <br /> (a)Miscellaneous rental and contract equipment will be brought to the mine site as needed.These could include fuel trucks,propane trucks,boom <br /> trucks,maintenance vehicles including welders,pipe equipment,electrical man lifts for working on power lines,contract vent hole drilling <br /> equipment,exploration drilling equipment,material delivery trucks,and concrete and gravel trucks. <br /> 4.2 Waste Rock and Tailings Management <br /> The previous waste rock embankment at the Revenue Mine was made from waste rock generated <br /> from underground development in the past.No reclamation of this waste rock embankment has <br /> taken place. Approximately 25,000 to 35,000 CY of waste rock exists in this pile. See Map C-1 <br /> for the location of this area. This rock has some minor vegetation growing from the surface,but <br /> it has not been vegetated in over 100 years. <br /> Tailings produced by the underground mill are transported to the TSFs via truck from the loadout <br /> facility shown on Map C-Ia. The ore sent to the mill comes from a roughly 1.5-foot-thick ore <br /> vein (quartz hosting the sulfides) and is processed through a flotation system designed to remove <br /> > 95 of sulfide minerals. The resulting tailings from this process are - 130 mesh and have a <br /> moisture content of between 13% and 18%. The mill process is designed to remove the sulfide <br /> minerals from the ore, and therefore will produce tailings that are not expected to be acid <br /> generating. <br /> To accommodate the new mining at the Revenue Mine, two TSFs will be used over the life of <br /> the mine. The first TSF, the Revenue TSF is located on top of the existing waste rock <br /> embankment. The second TSF,the Atlas TSF, located to the west of the current mining area, was <br /> constructed on ground that was previously disturbed by the Atlas Mine. The 2015 Tailings and <br /> Waste Rock Management Plan (TWRMP) shows the final maximum extent of the two TSFs. <br /> These two embankments have a combined capacity of approximately 1,000,000 tons. This <br /> volume is expected to provide approximately 8 to 10.0 years of storage under the assumption that <br /> waste rock brought to the surface remains on site. If large amounts of waste rock are removed <br /> (i.e., shipped offsite as road base and construction materials),the life of the TSFs could be <br /> extended beyond 15 years. <br /> Approximately 75,000 tons of fine mill tailings and 30,000 tons of waste rock are planned to be <br /> produced on an annual basis. It is planned that some, if not all, of the waste rock will be crushed <br /> and either be given to Ouray County or sold to customers, as demand for road base dictates. For <br /> the purposes of this plan, it is assumed that no waste rock is removed from the site and must be <br /> spread out in lifts and compacted in the two TSFs. Waste rock content of the TSFs will be <br /> Revenue Mine <br /> Amendment 02 D-17 <br /> Updated August 2022 <br />