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• c. Middlings zone - discharge is a recycle loop back to the ball mill for further grinding. <br />d. Table Concentrates zone - discharge is collected. The table concentrates contain about 70% of <br />the heavy metal contaminants and any economically viable metals. Concentration ratios as high <br />as 100:1 may be achieved This product is viable and sold to a third party (smelter, refiner, etc.). <br />6. The slimes off of the table are then feed into the flotation circuit of the mill. Here a three-stage flotation <br />process collects the very finest and trace particles the gravity circuit missed. Minute amounts of chemical <br />promoters and collectors are added (ie xanthate, Aerofloat 208 and 242, pine oil - see the list that follows <br />at the end of this Exhibit C for MSDS information). This creates a chemistry that allows the targeted <br />metals to attach to air bubbles that create a froth in the conditioning cells. This froth is skimmed off and <br />collected. The flotation concentrates are also a salable product. <br />7. The final tailings have been carefully lab analyzed (SPLP Method 1312 metals and total dissolved metals) <br />and are essentially inert sand and clays. To ensure quality control the pH monitor watches the pH of the <br />final tails and alerts the operator to anything out of spec. Additionally, periodic sample testing will be <br />performed. <br />8. The slurried tailings are piped to the tailings solid waste impoundment via a 2" HDPE line. A total build- <br />out will consist of five benches stair-stepped up the gulch. The bench faces are nominally 40' high and 60' <br />deep. The process water is de-canted from the tailings and pumped back to the mill via an 1.25" HDPE <br />line, recycled for further use. <br />A description of the equipment used can be found earlier mentioned in 6.3.3(l)(e) and locatable in Exhibit E. <br />Due to the proprietary nature of the processing engineering we have done, it is our position not to specify anything <br />additional in the public record. We feel that the information provided is adequate for the DRMS to evaluate the <br />proposed operation. Items such as specific conveyor speeds, crusher feed rates, processing/conditioning times, ball <br />mill speed, etc. are variables internal to the process and only effect our production efficiency - not the resultant <br />waste stream composition. All chemicals to be used and quantities, however, have been reported. More chemical <br />• information can be found in 6.3.3(2)(a). <br />6.3.3(1)(n) <br />The mineral processing part of the operations will be extracting the following from mine waste rock and/or ore: <br />Primpa Commodities <br />Gold and Silver <br />Secondary Commodities <br />Copper, Lead, and Zinc <br />Incidental Elements <br />Iron (from collected pyrite/sulfide minerals), trace amounts of other various heavy metals <br />This material is extracted for economic gain and to generate an inert tailings for environmentally friendly <br />impoundment. The abandoned mine waste rock is polluting our properties and we have a desire to clean it up. <br />Being able to offset processing cost with profits gained from the sale of the concentrates makes this cleanup project <br />economically viable as a private business venture. <br />6.3.3(1)(o) <br />This operation as currently proposed will not require the use of explosives. <br />6.3.3(2)(a) <br />The processing plant facilities have been described at length in 6.3.3(l)(e) and 633(1)(m). <br />The following are chemicals to be used as part of operations: <br />• Water, approximately 18,000 gallons - for processing medium. <br />o Sourced from a municipal water supply, see 6.3.3(1)(h) <br />o Contained in a steel reinforced concrete pond, sealed with an asphalt emulsion. <br />• Diesel motor fuel, 300 gallons - for equipment fuel. <br />9