2013-05-10_REVISION - M1977193 (3)

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EXHIBIT D Mining Plan — Revised May 2013 The mining plan shall supply the following information, correlated with the affected lands, map(s) and timetables: (a) description of the method(s) of mining to be employed in each stage of the operation as related to any surface disturbance on affected lands; MINE PLAN REVISIONS FOR USBLM LEASED LANDS, PERMIT #M -77 -193 Mining will commence in 2013 from the southeastern corner of the USBLM lease area with surface leveling and bench development work from the top of existing highwall at boundary line 660' west and 660' north of the southeast corner of the lease area. Leveling for mine benches will proceed from the highwall contact working west towards the west boundary of the lease area. The ten -acre area of leveling and bench development will likely take place in two or more stages over the next 1 -3 years. The southeastern corner of the lease area will be accessed from a roadway developed from T.H.E. mine property along the central portion of the active mining zone north of largest highwall face currently exposed along the western boundary of T.H.E. property with USBLM lease lands (lease land in question). Bulldozers and excavators will be used to build access roads and level terrain for production drilling. Conventional hard rock surface mining techniques will be employed using percussion drilling equipment to drill 6" holes for bench development of 40'high and 30' wide for final highwall benches. During the active phase of highwall mining, bench heights of 40' and bench width of 20' will be used. The larger bench widths for final highwall configuration have been suggested to improve machine access if ever necessary to clean excessive rock fall and maintain desired storm drainage patterns along the toe of the mine benches. Tezak Heavy Equipment typically schedules a few large production blasts rather than many small production rounds. Typical production blasts are about 150,000 tons of granitic material per shot, meaning that production blasting occurs three to eight times per year. The current blasting schedule and specific state -of -the -art, non - electric, sequentially delayed blasting initiation system will be continued. Blasting patterns of 15'x15' burden and spacing are typically used and loading factors normally run from .25 -.35 #explosive per ton rock blasted. There have been no complaints or concerns regarding blasting controls at this site over the past number of years. It is a priority for T.H.E. Aggregate Source to maintain and continue the good operating history regarding blasting noise and vibration control during blasting operations. Each round is planned, loaded, and shot by a licensed blaster. All production rounds are recorded for noise and ground vibration levels and documented for blast layout and loading pattern. Once a sufficient area on top has been leveled, drilling operations will commence from the existing highwall face west to a location suitable for shot size and face development. Mine Bench Details As mentioned earlier, final mine bench dimensions will be 40' high and 30' wide, with a 1% grade along lateral bench reaches to nearest side drainage and 1% grade from outer edge of bench to base of next highest bench run. The 40' high rock bench face will be left at 0.25:1, H:V. No rock berms are planned for placement on the bench, although lateral drainage will be maintained along the near