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etc. It is understood that oily wastes will not be placed in the pit. The trash pit will be backfilled when it is no longer <br />.needed. <br />The drill hole will be approximately 1100 feet in depth and have a nominal diameter of 6%. inches. The hole will be <br />drilled with either, air, water, foam or mist, or any combination of the various circulation media. Any wafer arising <br />from the drilling containing cuttings will be passed through the mud pits before being discharged from the site. After <br />the hole is completed it will be logged and then grouted from the bottom to within three feet of the surface. Apiece of <br />rebar will be placed in the top of three feet of the grout to act as a permanent marker, and the remainder of the hole will <br />be backfilled with soil. The required abandonment report will be submitted within 60 da}5 to the Division. <br />TCC proposes to install an additional subsidence test site above the 3rd Southwest panel to evaluate the possible effects <br />of surface subsidence from longwall mining on the base of a lattice-type electric transmission tower (MR95-125). The <br />site will consist of four buried concrete pilings, 18 inches in diameter, by 15 to 20 feet deep. Each piling will have a <br />survey marker placed in the top in order to measure any settlement caused by surface subsidence. <br />The site will be accessed by an existing road, except for a short segment from the road to the site. The drill rig will take <br />the shortest route between the road and the site. The holes will be drilled by an auger following topsoil salvage and <br />stockpiling. Cuttings from the holes will be raked back from the holes and scattered over the site. In mid-1996, at the <br />conclusion of the study, the site will be excavated to allow removal of the upper portion of the pilings, the site will be <br />backfilled, re-graded, re-topsoiled, and seeded with the appropriate seed mixture. <br />The reclamation bond for the activity can be found in Appendix A, Volume IA of the permit. <br />Twentymile Coal Company (TCC) does not plan to conduct underground mining operations within the Fish Creek <br />Tipple permit area. <br />.EASTERN MINING DISTRICT <br />The Eastern Mining District will add approximately 7,689 acres to the permit area, of which approximately 4,440 <br />are associated with the Eastern Mining District. The additional acreage was added to square up the permit area and <br />accommodate future panels to the north of the Eastern Mining District. The schedule for mining the Eastern <br />Mining District and the remainder of the districts within the permit area is provided on Map 23, Mine Plan. The <br />existing portals will be used to gain access to the Eastern Mining District. It is anticipated that the previously <br />approved eastern portal will be fully developed to facilitate mining in this district. Presently, only one of the two <br />entries has been broken out to the surface. The second entry will be developed and broken through when it is <br />needed. <br />i <br />During the five-year permit term (1993 - 1998) covered by this application, mining will continue in the Southwest <br />Mining District and extend into the gateroads SR to IOR, submain, North Main, and longwall panels 9 Right <br />through 7 Right. The remaining five-year blocks are shown on Map 23. The surface ownership for the eastern and <br />first north mining districts is shown on Map 1, Surface Ownership. The reader is referred to this map for location <br />of the parcels overlying the mine workings owned by various companies, individuals, or governmental entities. <br />The gate roads are comprised of three entries typicall}~ driven on 100 f~~qqt ce s~~ough the location of the entry <br />may vary depending upon ground control requirements as reflected in pillar`wrdtlrs between the entries. Including <br />the three 20 foot wide entries and 35 to 155 wide pillars, the gateroads will be approximately 230 feet in width. <br />Cross cuts are developed on both 100 and 200 foot centers along the length of the entry, except in the vicinity of the <br />start and stop rooms where the cross cut spacing is lessened. The submains will have up to six entries driven; the <br />entries will be on 100' centers. As stated previously, the submains driven off the north main may have up to seven <br />entries, plus a sump. Once the submains are driven to the southeast, there will be up to six entries established. The <br />longwall panels will have an 850 foot face and vary in length from approximately 10,000 feet to <br />APPROV~'7~ APR 2 4 1C90 <br />Permit Renewal No. 3 2.05-16 1/IS/00 <br />