Soil nail in Jackson formation Soil nailing operation along lower bluff Soil boring operation on bench above lower bluff Placement of clay-gravel along upper access road Drilling equipment used in installation of soil nails Failing 1500 drill rig used for soil boring Split spoon sample from Jackson formation Down-hole hammer and drill bit used in soil nailing operation for advancing holes in the Jackson formation Fragments from soil sample taken in hard layer of Jackson formation Overall view from upper bluff Soil boring operation on bench above lower bluff Shotcreting operation along lower bluff Fractured face of Jackson formation Exposed face of Jackson formation Soft material on bench above lower bluff Soil drill rig stuck in soft material on bench above lower bluff Excavation through Jackson formation Drill stem and casing to be used during installation of deep soil anchors