Laserfiche WebLink
<br />mining face at an overburden depth of 500 ft. Monitoring lines <br />"A", "B", "C", and "D" overlie old room-and-pillar workings in the <br />F-seam. The current subsidence data suggests that E-seam mining <br />may be impacting these old room-and-pillar workings. <br />Residual subsidence continued on the S1 through 512, T1, and T2. <br />The subsidence values noted in the tables for monuments S1~ through <br />S17 reflect the 0.1-ft survey accuracy rather than actual <br />subsidence. <br />Lyprus Empire <br />May 11, 1992 <br />Subsidence Report <br />page 2 <br />