2014-10-21_REVISION - M1988044 (5)

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TR-07 MINING PLAN configuration of that particular deposit of sand, thus indicating the possible extent of the local deposit and providing some idea of where to start mining so the overall direction of mining can be achieved. Once the excavation begins it is then expanded, following the sand where it leads. When a deposit runs out and a new area needs to be found, the old area is abandoned and final reclamation implemented there. Thus, as a consequence of the nature of these deposits, mining areas can be large or small or any other size and may be separated by areas that remain undisturbed. Of course this limits pre-mine planning to a more conceptual approach than the more customary well defined, location dependent approach. That is, the overall conceptual processes for mining and reclamation are well defined, but the extent and actual application to any one area must remain flexible so the circumstances of each area and the defined mining and reclamation processes can be adapted to best suit each site. In the exploration of the remaining area to be mined in TR-07 it was found that the sand tended to be fairly uniform. However, the distance between the exploratory pits was so wide, finer scale variations could have been missed. In the existing pit, the deposit has been found to be more variable than the exploration showed it should have been. Those variations have occurred between two pits that showed a similar deposit. It can therefore be assumed that higher variability than was indicated in the exploration has a higher probability of being true than not. Finer scale exploration of new or adjacent mining areas tends to be reliable in detecting generally where the better sands occur and where thick clay layers or columns occur. But even that does not detect all the variations. Therefore, considerable flexibility must be allowed in exactly how an area is mined so as to extract the sand most efficiently and economically without the need to dig through large volumes of worthless material to gain access to better material. Mining Processes Pre-mining Treatments: No longer necessary for the land to be mined in this revised plan. Topsoil Removal and Stockpiling: REQUIREMENT 7: Topsoil removal will occur to the full depth of the soil. Topsoil stockpiling will occur on land adjacent to the anticipated mining area. REQUIREMENT 8: Topsoil stockpiling will occur on land adjacent to the anticipated mining area. These stockpiles will be located where erosion of the piles will not result in excessive sedimentation into adjacent drainageways. The stockpiles should be located where a need to relocate the stockpile is minimized and where replacement of the soil on backfilled land is comparatively easy. Coal Creek Sand Resource Amendment 3 (2005)- M-1988-044 Exhibit D Page 10