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J. J. Dudash -3- April 25, 2007 during idle periods. Explosive and cap storage will be in accordance with applicable regulations. Rule 2.10 -Maps and Plans 9. DRMS: Please revise the pertinent maps to show the new permit boundary, as required in Rule 2.10.1(3). As has been done in the past, the maps can be submitted alter the adequacy review is finished but before a proposed decision is made. BRL: BRL will submit the affected maps after the adequacy review is finished and prior to the proposed decision. Rule 4.02.6 - Blasting Signs and Rule 4.08 -Use of Explosives 10. DRMS: Because explosives will be used in the construction of the Hubbard Creek vent shaft, Rule 4.02.6 and certain portions of Rule 4.08 will apply. Please provide the details of the blasting plan and state which sections of the blasting rules and Section 2.05.3(6) of the Bowie No. 2 permit application are applicable to TR-47. The plan details should include, but not be limited to, the anticipated maximum size of each blast, approximate distances from the blast area to active and abandoned underground mines, any required permits, certifications and record keeping, flyrock prevention safety measures for the public and for any livestock, the county road closure plan and county approval of the road closure, public warning signals and any required blasting notices. BRL: A formal blasting plan will be drafted once a contractor is selected. There is a blasting plan in the permit, pages 2.05-42 through 2.05-44 that will be referenced as the plan is drafted. All record keeping requirements listed in the permit will be followed except seismographic and air blast records. The size of the blast will be greater than 5 pounds so blasting will be conducted according to the schedule required by Rule 4.08.3. The approximate distance to Oxbow's underground mining is 800 feet and the blasting will be within 540 feet of the abandoned U S Steel workings. Section 2.05.3(a)(iii) addresses the safety prevention measures for the public and livestock as well as the plan for Hubbard Creek Road closure. The only approval required from the County is to notify them prior to commencement of the blasting operation, and to use correct signage. Please see the attached email from Ralph Clark (Delta County Road & Bridge Foreman). A public notice similar to the one shown on permit page 2.05- 42 will be used for this blasting operation. Sections 2.05.3 (a)(iv through vii, shown on pages 2.05-42 through 2.05-44) will apply and will be part of the blasting plan once a contractor is selected and the plan is drafted. Signs will be posted in accordance with Rule 4.02.6. 11. DRMS: In the Division's letter dated March 30, 2007, a copy of Oxbow Mining's comment letter concerning TR-47 was mailed to BRL. In that letter, Oxbow commented that they did not want any changes or limits to their access to conduct mining operations due to proposed activities in TR-47. Considering that explosives will be used for the vent