Laserfiche WebLink
Spring 2008 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />• show rockfall /landslide activities increased significantly after longwall mining occurred beneath <br />Longwall Panel 22 and 23 and that there has been some minor changes since 2003 (i.e., compare <br />Figure 33, 34, and Figure 35). <br />C J <br />Figure 33. Pre - mining view (July 2003) of the norihem end of the headscarp area shown in Figure <br />32, <br />Figure 34. April 2007 telephoto view of the headscarp area shown in the preceding figure. <br />i s <br />831 - 032.791 Wright Water Engineers, Inc. Page 45 <br />November 2009 <br />