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~• <br />IJ <br />..J <br />~- <br />r <br />r <br />L <br />L <br />r <br />L <br />f <br />I <br />L! <br />Sanborn Creek Subsidence Page 7 September 2, 1997 <br />Figure 2. Angles of draw with respect to overburden lithology. <br />W <br />Z <br />F <br />N <br />O <br />Z <br />Q <br />N <br />N <br />Z <br />W <br />V <br />K <br />W <br />6 <br />3.210 (>99%) <br />F)g. 2-Reported angle of draw versus percent sandstone and <br />limestone (Abel 8 Lee, 1984) <br />7 <br />PERCENT LIMESTONE <br />