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energy fuels coal, inc. <br />southfield mine • post office box 459 • fiorence, colorsdo 81226 • (719) 7846395 <br />July 30, 2014 <br />RECEIVED <br />Mr. Rob Zuber — Reclamation Specialist <br />Division of Reclamation Mining & Safety AUG 01 2014 <br />1313 Sherman Ave — Room 215 <br />Denver, CO 80203 Division of Reclamation, <br />Mining & Safety <br />RE: Minor Revision No.63 (MR -63) Request — Drillhole Sealing Procedure Revised <br />Energy Fuels Coal, Inc., (EFCI), Southfield Mine — Permit No. C -81 -014 <br />Dear Rob Zuber: <br />It was brought to EFCI's attention that the recently submitted map for MR -63, Mine Area <br />Surface and Underground Hydrology, Map 12, had been accidentally cropped during the map <br />copying process that omitted part of the title block and other information. Accordingly, a <br />corrected copy of Map 12 is enclosed herewith. <br />Additionally, revised pages (pages 4.07 -1 and 4.07 -2) concerning the drill holes /wells <br />sealing procedure is enclosed in which the length of the cement plug installed near the top of the <br />holes /wells is reduced from 20 feet length to 10 feet in length. <br />Further, a Non -Slip plug (oc -to plug) will be installed between the bottom of the cement <br />plug and the top of the bentonite slurry to assure that the cement plug does not settle into the <br />bentonite slurry. <br />Also, a list of holes /wells that were surveyed during the June -July, 2014 field <br />reconnaissance of drill holes has been added to the Southfield permit document in Section 4.07.3 <br />"Permanent Sealing ", Page 4.07 -2. The listed holes /wells were confirmed to be open during the <br />field reconnaissance (July 2014) and include the surveyed coordinates of the location of each <br />hole /well for ease of locating the sites in the field. <br />If you have any questions or need additional information please contact me. <br />Sincerely, <br />,a�ge V P; erson <br />Energy Fuels Coal, Inc. <br />Enclosures: Replacement pages 4.07 -1 and 4.07 -2 to be replaced in Section 4.07.3, <br />"Permanent Sealing "; <br />Updated map, Mine Area Surface and Groundwater Hydrology, Map 12. <br />