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Pitch Reclamation Project April 29, 2004 <br />2003 Annual Reclamation Report Page 6 <br />-~ <br /> <br />Table 1 2002-2003 Survey Monument Displacement <br />Point ID Total <br />Displacement <br />ft Dip (deg.) Dip Direction <br />(deg.) <br />MP-59 0.17 -8 307 <br />MP-63 .24 -6 255 <br />MP-65 .18 5 225 <br />MP-66 .17 18 254 <br />MP-68 .10 -28 286 <br />MP-69 .21 28 242 <br />MP-79 .10 -30 305 <br />MP-83 .23 -16 220 <br />MP-85 .17 -25 244 <br />MP-87 .11 -3 262 <br />MP-91 .07 -60 282 <br />P-07 .40 -29 346 <br />P-08 .11 -10 297 <br />Note: 68 Monuments were included in the survey. Only the 13 <br />monuments with displacement greater than the survey error of <br />0.1ft/1000 ft are provided in this table. <br />4.2 Inclinometer Evaluation <br />Three (3) inclinometers were installed in October 1998 (I98-1, I98-2, and I98-3) to monitor any <br />subsurface movement within the south and east walls of the North Pit. Inclinometer 198-1 is <br />located on the lowest bench on the South Wall; I98-2 is located on the 10,600 ft. bench of the <br />South Wall and; 198-3 is located above the crest of the East Wall. Data collected in 1999, 2000, <br />2002, and 2003 from all three inclinometers indicate minimal subsurface slope movement (less <br />than 0.3 ft/year) and is consistent with the surface monument survey data. This movement is <br />within the instrument error for the inclinometer probe of + 0.3 inches per 100 ft. of depth. <br />Homestake will continue to periodically monitor these three inclinometers. <br />Two temporary inclinometers were installed in Piezometers P-8 and P-10 during the winter of <br />1997-1998 to provide data in the spring of 1998. These inclinometers were made redundant by <br />the installation of inclinometers I98-1, I98-2, and I98-3. The inclinometers in P-8 and P-10 <br />remain installed, but are not surveyed on a regular basis. Should surface monuments detect <br />increasing slope movement, data could be collected from these combination <br />piezometers/inclinometers. <br />4.3 Pinnacle Mine Workings Monitoring <br />A concrete plug was constructed in the Pinnacle Adit in September 1995. Authorization for the <br />placement of the Pinnacle Adit plug was requested by Homestake in April 1995, through <br />