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1 1 1 z general terms, the feasibility of the construction in the land- slide area and construction methods that might be required to prevent further deformations of the landslides or catastrophic movements that would endanger the proposed construction. During the first phase of our study, engineering geological mapping of the area has been performed; it consisted of visual classification of important morphologic and topographic features that are usually pertinent to landslides and of other factors that are important for the stability. No surveying was used as an aid during mapping except for surveying of several profiles that have been used for interpretation purposes and that will be used in Phase 3 of our study. The accuracy of the geotechnical map that has been prepared as a result of our mapping program is therefore limited. ~ To provide data on subsurface conditions, a total of six borings were drilled and six test pits excavated during Phase 2 of our study. Locations of the borings and test pits are indi- Gated on Plate 1 - Geotechnical Map. Three borings (P1, P2, P3) ~ were located at the axes of the originally assumed mine entries Nos. 5, 3, and 1 at the expected location of the portal cut. Three borings (A6, ~A7, AS) were Located along the alignment of ~, the proposed mine access road. Six test pits (T1 through T6) were excavated in the vicinity of the future mine portal cut. Detailed logs of borings are not included in this report; only data pertinent to the scope of this phase of work are presented. 2.0 LANDSLIDES AT THE SITE 2.1 GEOLOGY AND HYDROLOGY Rocks exposed at the construction site belong to the Mesa- verde Formation of the Upper Cretaceous Age. They are mostly aw«roeo m~ann ac