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• r <br />MID-CONTINENT RESOURCES, INC. <br />•• ~ PRODUCERS OF THE FAMOUS COAL BASIN COKING COAL <br />BOX 158 <br />CARBONDALE, COLORADO 81623 <br />MID-CONTINENT RESOURCES. INC TELEDrIONE <br />7~S PLAINFIELD ROAO•SUITE 220 (~) ~~~ <br />wuLOweROOK auNOlseos?, May 9, 1984 o+o+me~ewX <br />TU( <br />~S-07?I <br />Mr. James Herron <br />Mined Land Reclamation Division <br />423 Centennial Bldg. <br />1313 Sherman St. - <br />Denver, Colorado 80203- <br />Re: Technical Revision - Tunnel to Wash Plant Conveyor System <br />File No. ~C-O1?-81 <br />Dear Jim: <br />Following are the answers to your questions of the <br />adequacy review comments letter of 4/23/84: <br />1. The detailed reclamation cost estimate has been <br />submitted. <br />2. Topsoil will be placed just above (north) of the main <br />transfer point (Geo-Hydro Sheet 3 of 7, revised). Eighteen <br />inches of topsoil will be removed from the conveyor route and <br />bin area, totaling 18,333 cubic yards. Twenty-four inches of <br />topsoil will be removed from the tunnel face-up area totaling <br />2,222 cubic yards; all this material will be in one stockpile <br />(20,555 cubic yards). <br />3. We are proposing to store the 64,000 cubic yards of <br />underground development waste generated by construction of the <br />new bins and conveyor tunnel at the rock tunnel existing pile. <br />We are also proposing to deposit an additional 60,000 cubic <br />yards of rock waste from the rock tunnel extension: i.e., the <br />No. 2 Mine slopes to the west side of Huntsman Ridge. We have <br />contacted Geo-Hydro to revise the design for the rock tunnel <br />storage area. They are presently waiting on us as we are try- <br />ing to finish the engineering design of the proposed tunnel <br />size, length, etc. This is not as easy as it might sound, as <br />it involves the proposed future air flow in No. 1 Mine and No. <br />2 Mine, as well as the possibility of No. 3 Mine. For this <br />reason we would request a 30- to 60-days delay on submitting <br />the pile re-design. <br />4. Maps showing pre-mining and postmining contours are <br />included 8~ x 11; they are copies of portions .of Sheets 3 of <br />? and 6 of ?. See originals in Geo-Hydro submittal. <br />~~:~ _ ... <br />