2012-10-01_REVISION - M1977284 (9)

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Mineral Joe Mine Environmental Protection Plan 8 Table 3. Samples Collected and Composited for Geochemical Testing Northing_y 584,750 584,830 584,910 Composite ID Samples MJ WRP1 MJ WRP MJ WRP2 MJ WRP3 Notes: WRP = representative underground mine waste rock composite Sample coordinates given in State Plane Colorado South NAD 27 ft The individual samples were crushed to -3/4 inch using a jaw crusher in Whetstone's geochemistry facilities in Gunnison, Colorado. The samples were subsequently split using a Versa Splitter (riffle -type splitter) followed by a cone and quartering method and then composited to develop the representative composite samples shown in Table 4. Cone - and - quarter compositing and splitting were performed by gathering the sample into a pile (cone), digging out the center of the cone and distributing the material around the edges of the pile in a ring, and gathering the ring back into a center cone. The procedure homogenizes the sample and was repeated three times. The cone was then split into equal quarters, and opposite quarters were combined to produce a representative split. Sequential generations of splits were combined until the sample for the composite was within the target weight. The samples were then crushed further to approximately minus 10 Mesh in an impact mill and split using the cone and quartering method to obtain the weights shown in Table 4. The final splits were sent to Energy Laboratories for analysis, with a request to process and analyze them in their entirety. These procedures were implemented to avoid potential sample bias related to shipping, settlement, and unrepresentative splitting at the analytical lab. The resulting composited samples are believed to be representative of the materials of interest. Table 4. Mass of Composited Samples Submitted for SPLP, Whole Rock, and ABA Analysis Composite ID MJ WRP Sample ID MJ WRP SPLP MJ WRP WR MJ WRP ABA Notes: WRP = representative underground waste pile composite SPLP = sample designated for synthetic precipitation leaching procedure WR = sample designated for whole rock analysis ABA = sample designated for acid base accounting analysis Easting x 1,073,240 1,073,195 1,073,160 Weight (g) 204.6 114.5 106.4 5.3.3.2 Acid Base Accounting Results Acid -base accounting (ABA) tests were used to evaluate the potential for ore and waste rock material to generate acid rock drainage. Acid -base accounting provides a theoretical estimate of the net acid - producing potential of rock materials by comparing the total acid generating potential (AGP) to total acid neutralizing potential (ANP). Test results are generally evaluated by calculating the net neutralizing potential (NNP = ANP -AGP) or by the ratio of ANP to AGP (ANP /AGP). Samples with NNPs greater than 20 and ANP /AGP ratios greater than 3 are considered to have low potential to produce acid. Samples 4148B.120927 Whetstone Associates