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III IIIIIIIIIIIII III <br />999 <br />NATIONAL KING COAL, INC. <br />1315 Main Av¢. - $UIl¢ 314 MINE OFFICE: <br />Post Ofllte Box 2905 4424 County Rtl. 120 <br />Durango, Color¢tlo 61302 Hesperus. Coloratlo 61326 <br />p~ <br />TELEPHONE: <br />(303)259-2416 <br />TELEPHONE: <br />(303)385-4528 <br />October 15, 1993 <br />°f= <br />State of Colorado ,'jC'~ ; S 199? <br />Division of Minerals and Geology <br />1313 Sherman Street ,.. <br />Room 215 -' ' (- . <br />Denver, Colorado 80303-2273 <br />Attention: Harry Ranney, Reclamation Specialist <br />Re: Third Quarter 1993 Surface Subsidence Inspection <br />Third Quarter 1993 Huntington Ditch Inspection <br />Dear Harry: <br />On September 28, 1993, I conducted an inspection of the <br />Huntington Ditch. The ditch was in good condition. A careful <br />inspection for evidence of subsidence produced no signs of <br />surface movement near the ditch. <br />One subsidence crack was observed during this inspection which <br />was not denoted previously on the subsidence map. This crack <br />begins approximately 600 feet to the north of the lined section <br />of the ditch and extends about 400 feet further north from point <br />of origin. Arrangements have been made with RLS Surveys to <br />locate and designate this fracture on the subsidence map at their <br />earliest opportunity. This fracture appears to occur over the <br />North end of pillared Section No. 3 Right but until an actual <br />survey is conducted, that assumption will be impossible to <br />verify. At any rate, the Huntington Ditch is in no immediate <br />danger of being intersected by subsidence fracturing. <br />On October 1, 1993, RLS Surveys, Inc. conducted a survey of much <br />of the area of subsidence concern, including locating and <br />surveying several existing subsidence monitoring stations. The <br />results of this survey are as yet unavailable. <br />If you have any questions or comments, please contact Tom Bird at <br />(303) 385-4606. <br />Sincerely, <br />T C-6- a <br />National King Coal, Inc. <br />