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RPM, Inc. <br />in order to dispose of waste rock in the mine workings. (b) Also, please claribi if the disposal of <br />waste rock underground has occurred at the Cross Gold Mine. <br />a. At present, we are aware of only two agencies Calais needs approval from in <br />order to dispose of waste rock or tails in the underground mine workings. These agencies are the <br />DRMS and the Environmental Protection Agency, Underground Injection Control Program. <br />Disposal of waste rock underground is not proposed at this time. However, Calais reserves the <br />right to dispose of waste rock underground, if necessary. Regardless, we will any mining waste <br />underground until we receive proper agency approvals. In addition, we do not plan to dispose of <br />tails (paste) in the underground workings during this phase of the operation since none will be <br />generated. A future permit revision will propose disposal of mill tails as a paste into the <br />underground workings. <br />b. Calais Resources Colorado, Inc. has not placed waste rock underground at the <br />Cross Mine. All material mined has been ore and has been shipped off -site for further <br />processing. <br />6. The proposed Amendment calls for constructing a new office and dry room. Please state <br />how the existing office and dry room will be utilized in the future. <br />The existing Cross Mine Office and dry room will be utilized as a Mine Shop /Office Facility. <br />7. The amendment area includes the Caribou Mine Office and a dry room. Please state how <br />the existing office and dry room will be utilized in the future. <br />The Caribou Mine Office and dry room are pre - permit structures which have some utility to the <br />on -going Cross Mine operations. The Office is presently used by Calais for storage, cataloging <br />and analysis of drill core. The Office is also used for office space and may continue to be used, <br />as needed. The dry room is likely not to be used, but is part of the existing structure. However, <br />depending on future mine plan development; the dry room could be placed back into use. <br />8. The Applicant has stated only one of the shafts will be utilized for ventilation and as a <br />secondary escape -way. Please specify which shaft will be utilized for these purposes. <br />The shaft located furthest north and west of the proposed location of the Cross Mine Decline <br />Portal is the secondary escape -way and is used for ventilation. This Shaft is called the Crown <br />Point Shaft/Raise. <br />9. The revised permit boundary now encompasses the Idaho Tunnel. (a) Please describe <br />how the Idaho Tunnel Portal will be utilized as it relates to the Mining Plan. (b) Also, please <br />provide the Division with a brief narrative of the history of the Idaho Tunnel Portal. <br />RPM, Inc., 9050 Old Tom Morris Cir., Highlands Ranch, CO 80129 Phone: (303) 854 -7499 E.4X:(303) 660 -3852 Email: hlhumphries2'acomcast.net <br />