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The following operation parameters are forecast: <br />- 6 month per year operation <br />- active operation will be maximum 6 days per week, 12 hours per day <br />- move an average of 2000 cy of overburden per day <br />- process a maximum of 1000 cy per day of gold bearing gravel through the prep plant <br />- a 5" rock grizzly will be located in the active pit to avoid transporting lazge rock to the prep plant <br />- strip an average of 4" of topsoil on virgin azeas and either directly respread on previously mined <br />and regraded azeas or place in a stockpile for use in reclamation. <br />It is expected that the swell of the virgin gravel material when mined will be 20%, however, since <br />the lower 5-15' zone of gold bearing gravel will be processed and then sold as road base and other <br />construction material, the net gain/loss in mining virgin azeas is zero. <br />Each mining cut is approximately 300' long x 150' wide. Overburden will average approximately 20' <br />depth while the gold bearing gravel will average approximately 7.5' depth. Therefore, the overburden <br />to remove for each cut is 300'x150'x20' = 33,333 cy. The gold gravel is 300'x150'x7.5' = 12,500 cy. <br />Since approximately 15% of the gravel is greater than 5" size, 85% or 10,625 cy will be sent to the <br />plant for each cut. Therefore, the plant operation for each cut will take approximately 11 days. Due <br />to other operations such as topsoil removal and replacement, overburden removal and regrading, <br />pump setup and other items, it is assumed that each cut will take approximately 45 days or 1.5 <br />months. Therefore, approximately 10,625 cy of gold bearing gravel will be processed in the plant <br />every 45 days which is equivalent to 43,000 cy per yeaz. This is equivalent to 64,000 tons per year. <br />This amount less 6% for fines loss, is the amount available for the gravel operation per year = 60,000 <br />tons per year. <br />Cut 1 has no topsoil, therefore, its overburden will be moved northeast to the previously disturbed <br />area and regraded. This cut will also make a pond similaz to Pond A in size. Prior to mining Cut 2, <br />Pond A will be moved to Cut 1 to maintain the hydrologic functions of the pond. It is also used as a <br />recycle pond for the gravel operation. Cut 2 is under Pond A and has little overburden since it has <br />been partially excavated. All gold bearing gravel will be shipped to the plant by loader and truck. A <br />dewatering pump will be placed at the bottom of the cut to deliver water to Cut 1 (new Pond A). The <br />Alma Placer 7/03 12 <br />