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pressures, by current mining procedures, and by the current reclamation <br />process. <br />As a result of the 2003 geotechnical investigation and the mapping effort <br />performed for this 2004 annual report, an additional foliation orientation, F-2, has <br />been observed and documented within the quarry. To date, not enough data <br />has been collected to fully define the extent of the F-2 discontinuity set, nor to <br />delineate if both the F-1 and F-2 discontinuities occur in the same location <br />simultaneously, or if the localized faulting has resulting in "structural blocks" that <br />would create regions in which F-1 and F-2 would occur separately. These <br />questions will be addressed as more data are collected; however, to date the <br />stereographic analysis indicates that the F-2 discontinuity plane is having <br />negligible to no impact on the overall pit stability. <br />Relative to each of the quarry walls, the northern walls, with an overall slope <br />angle of approximately 35°, are currently stable, and as stated previously, the <br />slide that occurred on the northeast wall has shown no signs of continued <br />movement over the past four years. Based on data that indicates that a number <br />of relatively shallow foliation surfaces will be encountered below the current main <br />pit elevation, the north walls should be monitored closely as the final 200 feet of <br />excavation occurs in the main pit. The remaining walls also currently remain <br />stable, though the present analysis for the west wall and the southeast wall each <br />indicate the possibility for wedge failures, which should continued to be <br />monitored as the excavations continue. As documented in the past, localized <br />raveling, especially along the south walls is likely to continue. Although <br />continuation of the safety-minded policies, which limit the height of the exposed <br />highwall, and reclamation of exposed highwalls as soon as possible following <br />blasting and rock haulage, will aid in minimizing the potential for sliding. <br />3.0 Location and Geologic Setting <br />The Spec-Agg Quarry is located to the north of Interstate 70 near Jackson Gulch <br />on the east flank of the Rocky Mountain Front Range, approximately 3 miles <br />-2- <br />