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~~; ~d~ <br />>/ <br />~~ Banks and Gesso, LLC <br />.~ <br />May 5, 2006 <br />720 Kipling St.,Suite117 <br />Lakewood, Colorado 80215 <br />(303)274-4277 <br />Fax (303)274-8329 <br />www. ba n ksan dgesso. com <br />RECEIVED <br />Tony Waldron i~MAY 0 5 2006 <br />Division of Minerals and Geology ~~ <br />1313 Sherman Street, Room 215 vbivision.f Minerals and Geels~y <br />Denver, CO 80203 <br />Subject: Oglebay Norton Industrial Sands, Inc., Jemadojin Sand Mine, Permit <br />No. M-2006-017, Response to Adequacy Review Comments 1/ <br />Dear Mr. Waldron: <br />On behalf of our client, Oglebay Norton Industrial Sands, Inc. (Oglebay/Applicant), this <br />letter responds to the Division's adequacy review comments in your letter of April 27, <br />2006. Our responses are listed in the same order as in your letter (included as an <br />attachment for reference purposes), excluding those exhibits that have already been <br />deemed complete and adequate. <br />6.4.4 EXHIBIT D -Mining Plan <br />Volume of Reject Material: Mined material will be sorted into three categories in the <br />approximate percentages listed below: <br />1. Saleable product - 50-55% of total volume <br />2. Reject generated during the on-site screening process - 35-40% of total volume <br />3. Reject generated during final off-site processing and returned to the site for use <br />in reclamation - 5-15% of total volume <br />At any given time, there is expected to be no more than approximately 118,000 cubic <br />yards of reject material stockpiled on site, as the material will be used throughout the <br />mine life for reclamation activities concurrent with mining. If there is additional reject <br />material available once mining activity has ceased, it will be used during reclamation to <br />minimize depth of the final depression and/or to make the reclaimed slopes less steep. <br />Imported Material: Once mining commences at the Jemadojin Sand Mine, sand from <br />this site will be the only source of material processed at Oglebay's Colorado Springs <br />facility for the foreseeable future. If reject material originating from another site is <br />expected to commingle with reject from the Jemadojin site, Oglebay will notify the <br />Division as required by Rule 3.1.5(9). <br />P <br />