Laserfiche WebLink
(y <br />,~ <br />0 <br />ti <br />T <br />a <br />c <br />~o <br />O <br />y0 <br />~~ <br />•\P'a <br />QO` <br />yJQ <br />Boren <br />member <br />F coal seem <br />/ <br />/ <br />/ <br />Affected / <br />Overburden ~ <br /> <br />`` Affected <br />Overburden <br />/ Unaffected \~ <br />/ Overburden <br />/ (no subsidence) ~ <br />caal~- safety zone -~~ coal <br />mined (50% of coal left in place) mined <br />out out <br />Fiqure 2: Idealized diagram of safety zone <br />under the Dry Fork of 1linnesota <br />Creek. <br />ccllapse zone <br />l~=) <br />