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Sanborn Creek Subsidence Page 12 September 2, 1997 <br />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 />J <br />Q 70 <br />• <br />J <br />- W <br /> <br /> 60 <br />H <br />Z <br />W <br />~ 50 <br />"~ W <br />a <br />w <br />> 40 <br />H <br />a <br />i~ J <br />~ <br />30 <br />r ~ <br /> <br />U <br />• 20 <br />L <br />10 <br />L o <br />I <br />~, <br />r <br />V <br />12 <br />0 50 100 150 200 <br />HEIGHT OF CHIMNEY COLLAPSE (feet) <br />