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/~ <br />~~ <br />XBOW MINING, LLC --~ <br />3737 Hwy 133 P.O. Box 535 Somerset, Colorado 81434 USA Tel (970)929-5122 Fax <br />(970)929-5177 <br />July 5, 2007 <br />Mr. Jim Stark <br />RECE;1/ED <br />Environmental Protection Specialist ,J(f ~ ~ 9 2~~~ <br />Colorado Division of Reclamation, Mining and Safety Divisbn of Reclamation <br />1313 Sherman Street, Room 215 Mining and Safety <br />Denver CO. 80203 <br />Re: Oxbow Mining LLC, Permit No. C-1981-022 <br />TR-57 Application for Mine Plan Chance, Additional Gob Vent Boreholes. <br />Dear Mr. Stazk, <br />The purpose of this letter is to request Technical Revision No. 57 to the Oxbow Mining LLC <br />(OMLLC) Permit No. C-1981-022. This TR provides for 1) the relocation of one gob vent <br />borehole site and 2) the addition of two (2) gob vent boreholes to the mine plan, all located on <br />USFS managed lands. <br />Gob Vent Boreholes <br />Two additional gob vent boreholes (GVB-LW9-O1B and GVB-LW9-02) will be necessary to <br />vent accumulations of methane gas from Pane19 gob areas located on USFS lands. To avoid <br />delays in approval of GVB's on other lands, these two sites have not been included with current <br />gob vent borehole approvals (TR-56 for example). Oxbow has been working these two sites <br />through the USFS approval process first prior to submittal to CDRMS. <br />One gob vent borehole pad will need to be re-located to facilitate the drilling of two angle <br />boreholes (GVB-LW10-Ol and GVB-LW10-02). <br />The sites are shown on the attached Drawing 2.05-MI, Sheet 6 of 6, "General Facilities, Gob <br />Yent Boreholes." In addition, we aze submitting revised PAP pages 2.05-SOa, Exhibit 2.04-E3, <br />Item 9 -Methane Drainage Well Information. <br />OMLLC has previously permitted gob vent borehole programs (TR 46, 48, 53, 54 and 56). The <br />subject of this TR is consistent with the previous submittals. <br />• Page 1 <br />