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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 />Q 70 <br /> <br />r W <br /> <br /> <br /> <br />~ <br />i <br />60 <br /> <br />2 <br />W <br />~ 50 <br />W <br /> <br />I W <br />> 40 <br />H <br />Q <br />J <br />~ 30 <br /> <br /> <br />U <br />20 <br />10 <br />0 <br />lz <br />0 50 100 150 200 <br />HEIGHT OF CHIMNEY COLLAPSE (feet) <br />