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Mr. Forrest Luke Page 3 of 3 July 2020 the analysis with Clover Technology's Galena software for verification purposes. Please include the profile geometries and the material properties used in the stability analysis, preferably in paper and electronic forms. Rule 4.16.3 Alternative Land Use DRMS August 2020 Trapper Mine received written concurrence from the Colorado State Land Board and met the criteria required for this rule and an associated proposed change in land use. Rule 4.21.4(7) Performance Standard Diversions DRMS August 2020 DRMS notes that three diversions are proposed for construction as follows: o No Name East Diversion o No Name West Diversion o Coyote Diversion TMI submitted SEDCAD modelling for all diversions. The above stated diversions are indicated on Map M51 and meet the performance standards required of this rule. Rule 4.23.2 Auger Mining DRMS August 2020 DRMS notes that as per the above referenced rule, auger mining shall maximize coal recoverability of remaining reserves after completion of mining. DRMS finds that there may be areas of undisturbed coal left in unmined sections that are in excess of 2500 feet apart. Given that the ownership is the State of Colorado with a Trapper Lease, please demonstrate: 6. Distances between centroids of coal sections meet the requirements of the above mentioned rule 7. That undisturbed areas of coal are a minimum of 250 feet wide between each group of auger openings 8. Or, that the coal reserves have been depleted. Revised Pages DRMS August 2020 DRMS notes that on revised Pg 3-44 Regrade of Boxcut Spoils, in paragraph one a change from 800,000 to 500,000 BCYs from Dec 2019 revised pages for PR9. 6. Does the change in BCY's take into account both I and J pits or only JPit? There may be additional adequacy questions associated with the Worst Case Bond scenario.