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i~ <br />' 5.0 Field Observations <br />' In addition to the field data collected, the following field observations were also <br /> used to evaluate the current quarry conditions: <br /> <br /> 1) Significant mining progress has occurred in the quarry since the previous <br /> annual report was prepared in April 2004 (L&A, 2004). In the southern <br /> expansion area, the third bench has been reclaimed, and the fourth is <br />' almost completely mined (Photo 3). Both the third and fourth benches have <br /> been reclaimed as the excavation has occurred (Photo 4). The fifth bench <br /> is currently being excavated along the eastern flank of the southern . <br /> expansion area below approximately the 6975 foot elevation. In the <br /> southern expansion area, discontinuities on advancing benches were <br /> mapped for north, southeast, southwest and east facing exposures. <br />t <br /> T'he middle level has also been mined since the 2004 annual report almost <br />' the entire level being excavated to the 6,480-foot elevation (Figure 2 and <br /> Photo 5). Rock exposures on advancing faces were mapped for west and <br /> south facing exposures at this level. The north facing wall was in an active <br /> mining area and was considered not safe for conducting field mapping. <br /> <br /> In the main pit, the base elevation of 6,340-feet has not changed since the <br />' 2004 annual report was prepared. Some mining has continued in the south <br /> central part of the main pit; however, no significant new exposures were <br /> available for mapping (Photo 6}. <br />' 2) The quarry walls appeared to be relatively dry, although judgment cannot <br />be made solely by observing the seepage conditions without the installation <br />of piezometers. Groundwater flow in rock is dominant by fractures not rock <br />' mass. Noticeably absent is any major seepage in the southwest corner of <br />fhe main pit, which had been documented in prior reports (Photo 7). <br />t -~o- <br />