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<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />data from 2003; and the diamond symbols represent the data collected for <br />annual reports from 1997-2002. By identifying the data associated with the year <br />obtained, deviations or trends in discontinuity orientations can be monitored as <br />mining continues and the pit is expanded. <br />In the southern expansion area, only a few temporary walls were exposed at the <br />time of our data collection (Figure 2, Stations 1-5), and approximately 82 points <br />were collected from this mining area. The remaining 64 datapoints were <br />collected from the middle level of the quarry, along temporarily exposed north <br />and west oriented highwalls (Figure 2, Stations 6-9). <br />Slone Geometry <br />An adequate evaluation of the structural geologic conditions of the quarry must <br />also include accurate information regarding the long-term orientations of the pit <br />walls. The wall orientations utilized in this report are based on the most recent <br />mine plan developed by Lafarge West, Inc. in December, 2003 and match the <br />current Colorado Division of Minerals and Geology mine plan (Figure 5). The <br />orientations used for this analysis are the same as the 2004 report. The dip <br />direction and slope angle utilized to represent the final quarry walls are <br />presented in Table 1 below. <br />Tabte 1: Representative Quarry Wall Orientations <br /> Quarry Wall Slope Direction of Walltti Slope Mgle (degrees)tz> <br />' East 242° 45° <br /> Northeast 175° 35°* <br /> Northwest 151° 35°* <br /> West 091 ° 45° <br /> West 120° 45° <br /> Southwest 036° 45° <br />' Southwest 016° 45° <br /> Southeast 335° 45° <br /> <br /> <br /> <br />Note: 1: Slope orientations are presented as dip directions measured from true north (0°). <br />2: Slope angles are measured relative to the horizontal. <br />Based on lower slope angles as recommended from previous studies <br />-8- <br />