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FIGURE 1. BAR-D PIT -- <br />Thalweg Changes Since 1977 <br />(Preliminary, Approximate) <br />6620 <br />6610 <br />6600 <br />c <br />0 <br />m <br />m <br />W <br />6590 <br />6580 <br />6570 <br />78.8 <br />79.0 79.2 79.4 79.6 79.8 80.0 <br />1977 River Mile <br />~- 1977 (USAGE, 1977) <br />- -~ - 199D (Goff, 1992a,b) <br />~~~ ~ 11/93 (Sandco; Lidstone & Anderson, 1996) <br />-~-- 1/96 pre•mining (Sandco) <br />-+-- 1/03 pre-mining (FCMI) <br />- <br />- <br />-- <br />--- - --- <br />- <br />- <br />-- <br />v <br />m - <br />- - - <br />~ <br />LL~ <br />_~ <br />_~____ /~ <br />.-.~.___~_ <br />H <br />~ ~ ___ <br />/,. . <br />~ ~/,. <br /> <br /> / <br />Of <br />~ <br />~ ~ <br />~ ~~ '. <br />_ ~ ~ _ -~_ 63+68.71 <br /> / /, <br /> <br /> <br />__.7-i. . <br />-~- -- <br /> .'. <br />/.~ <br /> ~, <br />.. <br /> /~. <br />~i ~/ <br />i'~ ~J <br />i' <br />i" <br />. • <br /> <br />10+00 <br /> pre-1996 deep-pit mining? <br /> <br />Note: Horizontal and vertical placement of Bar-D <br />cross sections (1/96 and 1/03) are approximate <br />therefore, apparent gradients between cross <br />sections are inaccurate and apparent elevation <br />changes with respect to earlier data are approximate. <br />Gillam to Hellige 11/28/03 <br />