Laserfiche WebLink
5.0 Field Observations <br />In addition to the structural geology data collected, the following field <br />observations were also used to evaluate the current quarry conditions: <br />1) Significant mining progress has occurred in the quarry since the previous <br />annual report was prepared in April 2005 (LF&A, 2005), primarily in the <br />southern expansion and mid-level areas. <br />2) In the southern expansion area, the fifth bench is currently being reclaimed <br />(Photo 4), and the sixth is more than halfway mined (Photo 5). An <br />approximately 10-15 foot high bench is currently being excavated along the <br />eastern flank of the southern expansion area below approximately the 6900 <br />foot elevation and is referred to in this report as the seventh bench (Figure 2 <br />and Photo 6). In the southern expansion area, discontinuities on advancing <br />benches were mapped for east facing exposures only. <br />The middle level has also been mined since the 2005 annual report almost <br />the entire level being excavated from 6,480-foot to the 6,400-foot elevation <br />(Figure 2 and Photo 7). Rock exposures on advancing faces were mapped <br />for north facing exposures at this level. <br />In the main pit, the base elevation of 6,340-feet has not changed since the <br />2003 annual report was prepared. Some mining has continued in the south <br />central part of the main pit and the exposures on the north facing temporary <br />wall were mapped (Figure 2, Station 1; Photo 8). <br />3} The quarry walls appeared to be relatively dry, although judgment cannot be <br />made solely by observing the seepage conditions without the installation of <br />piezometers. Groundwater flow in the rock mass is primarily in fractures and <br />not through the rock matrix. Noticeably absent is any major seepage in the <br />-10- <br />