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r <br />~T <br />CTL/THOMPSON, INC. <br />CONSULTING GEOTECHNICAL AND MATERIALS ENGINEERS <br />April 10, 1990 <br />Leadville Mining & Milling Corporation <br />700 Carr Street <br />Lakewood, Colorado 80215 <br />Attention: Mr. Don Wilson <br />Subject: Observation Hole <br />Leadville Mining & Milling Corporation Mill <br />Near Leadville, Colorado <br />Job No. 16,768 <br />Gentlemen: <br />CTL/Thompson, Inc. installed the requested observation hole downhill of <br />your tailings disposal area at the location shown on Figure I. The summary log of <br />the soils penetrated by the hole and its fitting to be an observation hole are shown <br />on Figure 2. <br />Please call if you have questions. <br />Very Truly yours, <br />CTL HOMPSON, I <br />/ ~ I <br />F ank J. Holl' ay, P. E. <br />rincioal~En ineer <br />FJH:dd <br />(5 copies sent) <br />1971 WEST 12TH AVENUE DENVER. COLORAD080204 (303)825-0777 <br />