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• <br />Figure 15. Vertical stress distribution on the Upper B Seam. <br />• <br />Stress, psi <br />12000 <br />1800 <br />1600 <br />1400 <br />1200 <br />1000 <br />J > <br />l? H) <br />Orr to.ior <br />? J? 5 <br />?F <br />5 <br />I?i??ur?• Ir,. I';Il;u? t?a?l??r-??i?-.at???t? t???,r ih? nr,un•. <br />• <br />Nlaleki I echnologies, Inc. Pa"e M <br />Scale, it <br />0 500 1000 1500 U(i <br />2000