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Measurable subsidence continues to occur only at Monument "E", a <br />total of 1.63 feet to date. The measured displacement of the <br />monument during the reporting period was 0.94 feet, and is ex- <br />pected to continue to show only minor subsidence as the cave area <br />consolidates. All other water lines show only minor or no subsi- <br />dence (refer to Table 2), including Monument "F" which was ap- <br />proached by development mining operations. It is anticipated <br />that only minor subsidence will continue to occur at the water <br />line monuments. <br />Thompson Ranch Structures <br />All data pertaining to the three ranch structures is presented on <br />Table 3, Subsidence Monitoring Data Summary, for the period of <br />record. No subsidence was detected at any of the structures, <br />which is consistent with previous semi-annual periods. Only <br />minor subsidence is anticipated to occur in the area of the <br />structures. <br />Newlin Creek Monument <br />Data for the period of this report for the Newlin Creek Monument <br />is shown on Table 3, Subsidence Monitoring Data Summary. Total <br />displacement of the monument for the reporting period was only <br />0.03 feet, and total displacement to date has slightly decreased <br />as compared to the previous semi-annual report period. The New- <br />lin Creek stream channel in the area of the monument appears to <br />be stable, and only minor additional subsidence is anticipated to <br />occur. <br />Conclusions <br />The required subsidence monitoring program continues to monitor <br />displacement and orientation changes of structures and monuments. <br />No damage of the monitored structures has been observed to date. <br />It is anticipated that only minor subsidence will continue to <br />occur at the structures and monuments, and total subsidence will <br />be within values predicted in the mining permit. <br />