Laserfiche WebLink
surface soils. It appears that the azea a[, and in close proximity to, Muffler Rock has a stability <br />factor that is close to and sometimes less than one. A stability factor of one means that the forces <br />that prevent slope failure are equal to the forces that contribute to slope failure. Viewing [he area <br />from aerial photographs and from a field evaluation confirms that the area is generally unstable. <br />The DMG in their January 22, 1998, response claims that the most recent incidence of movement <br />occurred at the approximate time that the mining companies long wall panel was mined directly <br />beneath the landslide mass. DMG concludes that subsidence may have accelerated the occurrence <br />of the most recent episode of landslide movement. OSM agrees with this evaluation by DMG. <br />What constitutes material damage to the land associated with this most recent movement of the <br />topography around Muffler Rock is a mater left to the DMG to be determined by their approved <br />Stale program and is not an engineering matter. <br />Should you have any questions concerning this matter, please contact Michael Rosenthal at 303- <br />844-1453. <br />3 <br />