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Sanborn Creek Subsidence Page 12 September 2, 1997 <br />1 Figure 3. Chimney collapse height cumulative frequency <br />distribution. <br />~' Cumulative percent of chimney collapse height <br />(Gray, Bruhn and Turka, 1977) <br />100 <br />90 <br />80 <br />,~ <br />W <br />> <br />Q 70 <br />J <br />W <br />~~ 60 <br />Z <br />W <br />~ 50 <br />W <br />a <br />w <br />> 40 <br />i- <br />Q <br />J <br />~ 30 <br />U <br />20 <br />10 <br />0 <br />lz <br />0 50 100 150 200 <br />HEIGHT OF CHIMNEY COLLAPSE (feet) <br />