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• This material apparently lends itself very well to the irregular more aesthetically pleasing <br /> blasting technicques deliberately employed in order to obtain an a more natural, less artificial <br /> appearance commonly found in decouple presplit shots.We believe that this has achieved the <br /> desired effect of a more natural, `softened'appearance for the final highwall,without sacrificing <br /> safety and while optimizing both the stability and extraction performance from the final pit <br /> limits. <br /> • As such and give the deposit is uniform, hard, durable and unremarkable in terms of any <br /> structural or chemical deformities or other irregularities,and is characteristized by being routine <br /> and unblemished,we are confident that this deposit presents the opportunity to develop a <br /> mined column depth of well in excess of 950 feet, a depth we are close to approaching at this <br /> time,with no exceptional or remarkable comments and a high degree of confidence.We hope <br /> very much you will concur. <br /> 0 2013 Colorado Forest Ag Management Plan <br /> • Jefferson Soil Conservation District Notes <br /> • UDFCD Drainage Management Criteria Runoff data <br /> • DAILY WORKPLACE INSPECTION REPORTS: HIGHWALL(3rd QUARTER PROVIDED:June,July,Aug, <br /> Sept 2018) Pursuant to 30CFR Part 56/57/58 & Part 62, Subpart B-Ground Control (Federal <br /> Metal and Nonmetallic Mine Training, Safety& Health Standards for Surface and Underground <br /> Mines) provided by Operator and produced each day in connection with daily safe workplace <br /> management practices <br /> I note that you should have in your possession the detail regarding the highwall,the topo and the <br /> technical revision with the weed plan, and of course the signage was addressed some time ago, in the <br /> possession of the DRMS at this time,these matters arising out of the January 28 2018 inspection earlier <br /> this year. I would really appreciate confirmation of those documents together with any comments or <br /> approvals to make sure they conform to your expectations. I am happy to send those also, however <br /> given the size of the documents (some of the attachments were dating back to the original 1979 <br /> drawings) may I offer them in a cloud based format such as drobox?They seem to be a little too large <br /> for conventional email <br /> THIS REPORT COMPRISES TWO PARTS AS FOLLOWS <br /> 1. A geotechnical,slope stability analysis and engineering report on the highwall—addresses the <br /> current condition of the highwall as an annual report requirement as outlined under the <br /> technical revision submitted 2006.This arose as the highwall was designed to accommodate a <br /> moderately steep angle of repose closer to 70 degrees and criteria established by the Division in <br /> establishing the safety factor,or degree of certainty with which the Operator can develop in <br /> predicting any likelihood of potential failure,was required which demonstrates that the <br /> lithology and its joint subsets can accommodate this geometrical configuration with a strong <br /> degree of confidence <br /> 2. GEOLOGICAL REPORT—this report addresses changes that have developed to the previously <br /> issued geological report arising from the advances in the mining and stabilization of the <br /> highwall,cleaning up and exposure of the substrate, indicating lithology types that can be <br /> extrapolated with a stronger degree of confidence throughout the adjacent deposit.The <br />