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1 <br />1 <br />I <br />1 <br />1 <br />1 <br />~1 <br />1 <br />I' <br /> <br />1 <br /> <br /> <br />'~' <br /> <br />1 <br />Continuity was difficult to assess in the West PR due to the Ilmfted surtace exposure (less than 50 <br />feet). Shears and faults were isolated from the pole plots for respective drill holes in order to <br />attempt to assess a joint length. Faults and fault shears are generally more contfnucus feature <br />than joints, Figure 7a,b. Figure 7a represents the pole plot of all structures observed within D88- <br />61, 62, 63, 64 and 65. A joint set that parallels a shear is analyzed in greater detail since it implies a <br />structure chat may be critical to the overall pit height rather than limited to affecting the stability of a <br />single bench. The East Pit was characterized by a single stereonet that was based upon cell <br />mapping of outcrops, Figure 7c. The stereonets are summarized in Figures 7a,b,c. The design <br />sets are summarized in Table 1 for the diNerent structural domains. <br />TABLE 1 <br />SUMMARY OF DISCONTINUITY POPULATIONS <br />(f3iotite Gneiss Formation) <br />lACatlon <br /> <br />No. Dip Direction/Dip <br />(degrees) <br />No. No. <br />W <br /> NORTH WALL 1 276/14' 4 152/56 7 004/20 <br />E (D88-61) 2 222/44' S 352/76' 8 165/16* <br /> 3 120/58' 6 70/50' <br />S <br /> WEST WALL 1 184/32' 4 019/55 <br />T SOUTH WALL 2 270/10 5 074/58' <br /> (D88~2) 3 36/38' 6 060/84* <br /> FAST WALL 1 191 J50' 4 317/24' <br />P (D88f4) 2 228/60* 5 110/23 <br /> <br />I 3 255f45* <br /> EAST WALL 1 199/75' 4 270/06* 7 088/37 <br />T (D88fi5) 2 188/54 5 143/64* <br /> 3 228/53* 6 146/40* <br /> EAST PIT 1 178/36'* 4 348/58 <br /> 2 357/88 <br /> 3 240/37 <br />* faults/shears parallel to joint set <br />** length exceeds 50 ft. (mapping) <br />