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<br />unnecessary compaction and contamination are minimized. In addition, <br />they are appropriately marked with a conspicuous sign constructed of <br />durable material. To prevent erosion, each stockpile will be seeded <br />with rapidly growing cereal grain species or an appropriate <br />perennial mixture. The topsoil handling plan is shown on Maps tJo. <br />19 and 20. Topsoil mass balance for the anticipated mine operation <br />is shown on Tables 2.05-4 and 2.05-5. <br />The next activity which is conducted is the removal of the <br />colluvium which lies above the overburden material. This is <br />accomplished utilizing front end loaders or a hydraulic shovel. <br />Once this material is loaded into end dump trucks it is hauled to <br />the backfill area. In addition, because the material is of a <br />gravel like consistency it is utilized for a road base during <br />construction of all in pit and out of pit roads. Larger sized <br />material is also utilized as rip-rap for lining diversion ditches, <br />• emergency spillways or other areas which potentially may have high <br />erosional characteristics. The colluvium is removed down to the <br />overburden which must be drilled and blasted prior to loading and <br />haulage to the overburden fill area. <br />Blast hole drilling is completed by overburden drills which typically <br />drill a 10' x 10' pattern to the top of the first coal seam. GEC <br />Minerals, Inc. currently utilizes two drills which drill 5 1/8" or <br />6 1/2" holes. As production increases through 1985, additional <br />equipment but similar in size and operation will be utilized. <br />Once a pattern has been drilled on the 100 foot wide bench it is <br />loaded with Ammonium Nitrate - Fuel Oil Blasting Agent (AN FO) in <br />preparation for blasting. GEC Minerals, Inc. currently plans to <br />use AN FO with cast primers and prima cord as the primary means for <br />fragmentation of the overburden. AN FO in the amount approximately <br />.6 lbs. per cu, yd. of overburden is planned to be used. An electric <br />blasting cap is used to detonate the prima cord trunk lines which in <br />• turn detonate each powder column. Each row of holes is typically <br />2.05-5 <br />