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M-97-032/Adequacy letter 11/18/98 page 3 Exhibit C -Mining Plan Please describe the ore bins named in the fifth paragraph. Are the ore bins covered? Is there any provision for protection of the ore from the elements at the surface (i.e., wind, precipitation)? What is or will be the gradient of the sideslopes of the dump during mining? The description of the present size of the dump seems to be the same as that shown on the reclamation map. If any dump expansion is anticipated, please salvage the topsoil first. Please describe how fuel, tube, antifreeze, etc., are to be stored at [he site. What other fluids or materials may require special storage or handling? Where are these items to be stored? When a new vent shaft is drilled at the east end of the mine, will it produce more waste rock than can be contained in a half acre? Please describe the drilling activity and configuration of the waste rock storage. The statement that power is supplied via EFN-owned transformers must be clarified, since EFN may not own these structures any longer. Likewise, please ensure that the commitment of complying with all water appropriation laws is updated to reflect NC's commitment. You stated that groundwater may be encountered, and utilized in the mining operation. Please verify that you are allowed to utilize this water, and that there will be no injury to water rights. Exhibit D -Reclamation Plan The reclamation costs must be calculated for this operation, based in large part on specifics of the reclamation plan. However, that plan must include more information about the site and the facilities, in order for the costs to truly reflect the reclamation tasks. To this end, please provide the following information: the volume (or dimensions) of the Van 4 Shaft, since it is to be backfilled; the volume of the dump material, since it must be sufficient to backfill the Van 4 Shaft; the volume of venthole waste rock, since it will be used to backfill the vent shaft; alternate method of shaft closure, if insufficient backfill material exists; dimensions of the buildings and their contents, since they are to be removed; descriptions of the foundations, if any, and construction of the buildings; descriptions of the ore bins, and proposed methods of removal; description of the headframe and hoist, and proposed method of removal; description of any known materials which may require special disposal; the volume of existing topsoil stockpile; which areas will receive topsoil, and which will not receive topsoil for revegetation; descriptions of the berms, water bars and ditches to be created on the dump surface; descriptions of any surface features at the vent shafts, such as collars, fans, etc.;