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<br />Petter O'Conner - King Coal - 3 - March 6, 1987 <br />Although the operator has previously committed to not undermining Pine Gulch, <br />information submitted by the operator indicates that coal extraction beneath <br />the gulch may occur. Preliminary investigations by the Division indicate that <br />there is, on the average, about 100 feet of overburden between the coal and <br />Pine Gulch. Given the minimal amount of overburden, surface expressions of <br />subsidence will certainly occur, possibly dewatering Pine Gulch and any <br />tributary alluvial /colluvial materials. The operator should supply enough <br />information to satisfy the requirements of sections 2.04.7(3) (if applicable), <br />2.05.6(6) and 4.20, if undermining of Pine Gulch is proposed. <br />cc: Fred Banta <br />Jim Pendleton <br />Mike Savage <br />/sk <br />7907E <br />