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_1 Sanborn Creek Subsidence Page 7 September 2, 1997 <br />1 Figure 2. Angles of draw with respect to overburden lithology. <br />3.210 (>99%)_ <br />_1 <br />W <br />Z <br />F <br />1 0 <br />Z <br />1 <br />Z <br />W <br />W <br />d <br />1 <br />1 <br />1 <br />Fig. 2-Reported angle of draw versus percent sandstone and <br />limestone (Abel & Lee, 1984) <br />7 <br />PERCENT LIMESTONE <br />