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blasting area within 500 feet of an active or abandoned underground mine, no <br />monitoring is proposed. As blasting will not be conducted within one-half mile <br />of any dwellings or structures, no pre-blast surveys are anticipated to be <br />conducted. <br />To ensure compliance with restrictions on peak particle velocity, any blasting <br />at the mine will comply with the limitations on maximum weight of explosives <br />contained in Rule 4.08.4(10)(c)ii). <br />Blasting Schedule <br />National King Coal will publish a blasting schedule between 10 and 20 days <br />prior to initiating the surface blasting program in the Durango Herald, the <br />newspaper of general circulation in the area of the mine. <br />The blasting schedule will: <br />• identify the location of blasting <br />• time periods during which blasting will occur <br />• measures to control access to the blasting area <br />• the pre-blast warning and all-clear audible signals <br />• the unavoidable hazardous conditions which would require blasting <br />outside the approved blasting schedule <br />If changes to the blasting schedule are necessary, the blasting schedule notice <br />will be republished. <br />Unavoidable Hazardous Conditions <br />Blasting will occur during times indicated in the blasting schedule unless <br />dangerous atmospheric or site conditions, as determined by the blaster-in- <br />charge, require detonation to avoid accidental detonation. If so directed by an <br />authorized law enforcement or regulatory agent, blasting may occur outside the <br />times specified in the blasting schedule. <br />Air Blast Limitations <br />Air blast will not exceed the limitations described in Rule 4.08.4(6)(a). <br />Oa-Site Explosive Storage and Handling Facilities <br />There will be no on-site explosive storage and handling facilities. The licensed <br />blaster will provide storage. <br />National King Coal LLC King II Mine <br />Section 2.05.3 <br />Page 7b April 2007 <br />