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DRMS SUPPLEMENTAL REPORT:Concerns in re COMPLIANCE RE BENCHING within HIGHWALL <br /> 12/6/18 MLRB 1978-208 Shaffers Crossing <br /> g) Finally Operator submits that,as evidence in the attached, the pre-existing condition of the <br /> property with the exposed mine face was such that in a number of areas the sections are <br /> approaching 90 degrees.Where this is evidenced by the attached survey by Faicon Surveying <br /> (2003)which indicates that the shallower section of the preexisting highwall had been over- <br /> excavated to approximately 79.87 degrees and that the contour interval in the survey <br /> demonstrated a concentration of contour lines on a 2'-0"ft. interval such that the contours tend <br /> to coalesce and obstruct a clearer view of the structure and components of the topography in <br /> the map.This data demonstrates that some of the highwall sections were already in a <br /> preexisting condition such that Operator was restricted in their options in pursuing an optimal <br /> solution such as declining the angle of repose on the highwall for these sections and thus was <br /> confined to pursuing the best alternative remedy in such cases. <br /> EXPLANATION <br /> I have reviewed (leave this up to Steve to add change etc.) <br /> ** ENDORSED AND STAMPED BY PROFESSIONAL ENGINEER, Steve BROCKMAN, BEI# <br /> 12/6/18**** <br />