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III IIIIIIIIIIIII III <br />999 <br />-~ <br />BASIN <br />RESOURCES, wc. <br />a subsidiary of ENTECH, Inc. <br />Mr. Ken[ Gorham <br />RECEIVED <br />MAa 2 6 1998 <br />Division of Minerals 6 Geology <br />March 12, 1998 <br />Colorado Division of Minerals & Geology <br />1313 Sherman Street, Room 215 <br />Denver. Colorado 80203 <br />Re: Golden Eagle Mine: Permit No. C-81-O13 <br />Subsidence Survey Da[a <br />Dear Mr. Gorham: <br />14300 Highway 12 <br />Weston, Colorado 81091 <br />(719)868-2767 <br />Purchasing (719) 868-2768 <br />Fax (719) 868-2275 <br />Enclosed is the subsidence monitoring data for the thud and fourth quarters of 1997. The data for each <br />station has bee entered chronologically since the station was established. The data sheet then shows the <br />movement that has occurred since the baseline survey, the last survey, and the cumulative movement in the <br />last twelve months. <br />Technical revision 46 approved the discontinuation of surveying of many stations. These stations are <br />indicated, and were not survey in the fourth quarter of 1997 (after the TR approval). <br />The first quarter 1998 survey is scheduled for the week of March 9th. This will provide one year (four <br />surveys) of data since TR-46 was submitted. A preliminary review of the fast three surveys indicates a <br />cessation of subsidence in most areas. This will be addressed by a future TR submittal. <br />Please call me if you Rave any questions or require additional infomta[ion. <br />Sincerely, <br />Ronald G. Thompson <br />Property Manager <br />Enclosures <br />