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.~ <br /> <br />Mr. Dave Hyatt <br />Homestake Mining Company <br />August 6, 1984 <br />Page 2 <br />I recommend that five points be monitored: two below the smile <br />crack, two above, and one above the headwall crack. It would be <br />preferable if these were established points with an existing history. <br />These stations should be surveyed twice a year, once in the <br />spring and once in the fall. As I mentioned in our phone conversation, <br />a survey should be made prior to the August hearing so the current dis- <br />placement is known. <br />If you have any questions, please contact me. <br />Very truly yours, <br />Richard D. Call, P.E. <br />President <br />/ljm <br /> <br />