For Turtle Mountain we have incorporated data from 2000 to October 2006 to generate a deformation map utlizing the Permanent Scatter INSAR technique (PS-INSAR). This technique takes scenes of data from different time periods, identified permanent scatters/coherent targets) and tracks changes over time. This allows to better distinguish potential errors in the data (such as athmospheric effects) and allows to track movements with the resolution of a few millimeters per year.  In this image the green area has been set as the stable area and the other movements are in relation to this stable area.  There were three main areas (1 to 3) that we identified.  Areas 2 and 3 appear to represent shallow movement of talus on a side slope.  Area 1 is overlying abandoned underground coal mine workings (discussed on next slide).