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within the permit boundary. Figure C-3 shows the proposed locations of five new vent holes (T-2 <br />through T-6). <br />A typical equipment list for the underground operations is presented in the upper portion of Table <br />D-2 and a typical equipment list for surface operations is in the lower portion of Table D-2. <br />Table D-2 <br />Mining Equipment List for Underground Operations <br />Description Number on Site <br />Under round E ui ment <br />Diesel Loaders, 2 - 5 cubic and ca acit 2 <br />Diesel Trucks, 2 - 10 ton ca acit 3 <br />Develo ment Drills, Jumbos 1 <br />Production Drills, Jackle s 6 <br />Surface E ui ment <br />Front End Loader, 2 - 3 c ca acit 1 <br />Highwa Haul Trucks, 22-ton ca acit 2 <br />W ater Trailer 1 <br />Pick-u Truck, 3/a-ton (4wd) 2 <br />Note: <br />All equipment is provided by two separate contractors: Mining and Haulage <br />Jumbo drills operating on compressed air will be used to drill the blast holes and rock-bolt holes <br />in the decline and laterals. Air-jacklegs will be used in production areas. All blasting operations <br />will be conducted in accordance with MSHA regulations (30 CFR Parts 56 and 57). Blast holes <br />will be loaded with an electric blasting cap, chemical booster, and a mixture of ammonium nitrate <br />and fuel oil prills. The blasts will be initiated electronically with the hole pattern, firing <br />sequence, and delays designed to allow for optimum breakage. Explosives and detonators will be <br />stored in underground magazines and transported from the magazines to the working face in <br />accordance with MSHA regulations (30 CFR Part 56 and 27 CFR Part 55). Currently the mine <br />decline extends 4,000 feet south and is at and average depth of 500 feet below the ground surface. <br />Based on the distance from surface facilities and depth of the mine workings, explosives are not <br />expected to adversely affect any on-site or off-site surface areas. <br />The ore and waste rock will be mucked out using low-profile diesel loaders. Depending on the <br />size of the opening, the loaders will vary in capacity from 2 to 5 cubic yards. Ore will be hauled <br />to the surface using low-profile diesel haul trucks with capacities ranging from 2 to 10 tons. <br />During initial decline and lateral development, the waste rock will be hauled to the surface and <br />5-234007 8xhibi[ D Mining Plan D-12 <br />