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5 , "EXHIBIT C" Detailed description of the Mining Plan to be employed. The ~:`;c method of operation to be employed in the n~*+ M;~;n~ 1 he rt„arryina Extraction of the crystalline rock will be accomplished by normal auarrv minine oroc durec, including dr' lin , blastingr, power-shovel loadino, and ~nck +ran~~nr+atinn, In Comp- liance with applicable mining regulations. Overburden, Hhich may be considered suitable for future use as top soil, will to stock- piled. The crystalline rock formation is irregularly fractured, but for the most part drilling and blasting will be required for extraction. Drilling will be performed with air-trac drilling equipment, generally producing 3 inch diameter holes, approxi- mately 20 feet deep, on 8 foot by 10 foot drilling patterns. Ammonium Nitrate and Diesel Pellets will generally be used as the blasting material, which will be detonated with Extra 60~ 2x8 S RS detonators and number 2, 4 and 6, (50, 100 and 150 millisecond) fuses. Most of the loading will be done with track mounted powershovels, and end dump trucks will be used for transporting the extracted material to the processing facilities. The processing plant will consist of a series of crushers, dry screening, and dry classifying facilities. R 'o of n t ns 'l1 be made by the re- moval of the csvstal~;na ro k ;n ano oximat lv 20 foot aYers to the desired elevations. All of th hichwalls w;i~ he limited to maximum ~~ slopes of 80 degrees,- The face of the highwall will be inter~er+°a by benches with a minim„m ,.,;,;th of 20 feet- These benches will be spaced at least every 50 feet in elevation but the various eleva- tions of e ene es will be staaaared cn as to reduce the appear- ance of continuous hor;,nn+al l;ne across the face of the hig- Each bench will have a slight slope from the outer edge of tie ~Tit~tt to the highwall to help control water errosion over the edge of the bench. Exposed rock surfaces in the highwall are stable, and there is no evidence of any need for special precautions to provide for errosion control of water runoff or air slacking, other than the above mentioned benches. Provisions have been and will be made to assure the flow of surface water in it's established channel by the installation of "French Drains and/or perforated pipe".