2013-01-31_REPORT - M1973021 (2)

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Bench 7220 Foliation spacing ranges from approximately 4 inches to more than 2 feet, and foliation apertures were tight to moderately open and slightly rough to rough. The primary joint set strike ranges from 20 to 40 degrees and generally dips from 80 to 85 degrees northwest. A second primary joint set is evident in this area and exhibits a strike of 310 to 355 degrees with dips ranging from 55 to 75 degrees southwest. The spacing of the primary joint sets varied widely, but averaged approximately 18 inches. Joint apertures were tight to moderately open with slightly rough to rough faces. Adversely dipping foliation is present within this scanline primarily between approximate stations 2 +45 and 2 +70. Special care should be taken to avoid small scale slide and raveling that could occur in this area. • Stations 3 +45 through 4 +75 were unmappable due to nearly complete rubble and debris coverage. The condition of the highwall is unknown in this section. Due to the maximum height of the highwalls on bench 7450 and adjacent to the upper haul road, special care should be taken to avoid raveling from high on the highwall that could potentially extend 25 feet or more from the highwall toe, possibly extending onto Bench 7220. A berm at the base of the highwall will tend to restrict the range of the raveling rock. Figures 6 and 7 are a photo documentary of the features observed in the upper haul road highwall. The Bench 7220 scanline is approximately 410 feet long and is currently unmappable due to nearly complete debris and rubble coverage. The approximate orientation of the highwall is 340 degrees (north 20 degrees west). The condition of the highwall is unknown in this section. Due to the height of the highwalls above bench 7220, special care should be taken to avoid raveling from high on the highwalls that could potentially extend 25 feet or more from the highwall toe, possibly extending onto bench 7220. A berm at the base of the highwall will tend to restrict the range of the raveling rock. Figure 8 is a photo documentary of the features observed in Bench 7250. Bench 6700 The Bench 6700 scanline is approximately 300 feet long and was separated into 3 discrete sections. The approximate orientation of the highwall is 0 degrees (north). A nearly vertical granitic pegmatite was observed at approximate station 0 +40. This scanline is in addition to the scanline conducted at this elevation for the 2011 Annual Report. • Stations 0 +00 through 0 +40 consisted of highly fractured granitic gneiss. The foliation strike varies in this area due to minor folding and ranges from 320 to 350 6 Morrison Quarry Annual Report 2012 P \23514 \133- 23514- 13002\Dehverables\Dehv -01 -2012 Annual Report\Annual Report 20 12 Geolech doc January 2013