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a <br /> <br />a <br />32000 <br />30000 <br />28000 , <br />260011 I <br />24000 ' <br />I <br />:., . 1 <br />22000 ~ / <br />11 / 1 /2001 <br />`-' ~ . <br />J <br />34000 36000 38000 40000 <br />Horizontal Displacement Vectors, Cover Depth Contours, and Subsidence <br />-0.15 <br />•1 <br />-3 <br />_c) <br />_.~ <br />.r. <br />q <br />Subsidence (ft) <br />(2 ft) <br />Horizontal <br />Displacement (ft) <br />-~_ <br />f .~i,ll <br />figure (~. t iorirontal displacement ~'eet01-, suLisidenre and overburden thickness for 'OO1 <br />survey durint• the extraction of D4 Panel. <br />Maleki lerhnulu~.!ics, Ini. I';i~~c <br />28000 30000 32000 <br />