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Federal Mine Safety and Health Act, shall be cause for detonations under emergency conditions: <br />a. Damaged or deteriorated explosives or detonators; <br />b. Misfires and/or undetonated explosives <br />c. Presence of static electridry or stray current conditions; <br />d. Weather conditions that may indicate a potential safety hazazd; <br />e. Operator safety of safety considerations for the general public. <br />Should such detonations occur between sunset and sunrise, in addition to the required wanting <br />signals, oral notices will be provided to all persons within one-half mile of the blasting site other than <br />the employees of the mining operations and a complete written reports of blasting at night will be <br />filed with the Division not later than three days afrer the night blasting. The report shall include a <br />description in detail of the reasons for the blast, including why the blast could not be held over to the <br />next day, when the blast was actually conducted, the warning notices given, and a copy of the blast <br />report required by 4.08.5. <br />An example of the blasting schedule to be initially published may be found in Attachment 142. Also <br />enclosed in this attachment is Figure 142-1, Blasting Schedule Distribution Area. Blasting azeas <br />• specified in the blasting schedule notice are identified on the figure. The figure also shows the azea <br />where blasting schedules and instructions on how to request a preblast survey are required to be sent <br />if dwellings exist. <br />Blasters <br />All surface blasting activities will be conducted by experienced, trained, and competent persons who <br />understand the hazazds involved. Persons responsible for blasting operations at a blasting site shall be <br />familiar with the blasting plan and any site-spedfic performance standazds. The blaster and at least <br />one other person will be present at the firing of a blast. Each person responsible for blasting <br />operations shall possess a valid certification in accordance with appropriate Federal and State law. <br />Blast Desitms <br />Except where lesser distances aze approved by the Division, based upon apre-blasting survey, seismic <br />investigation, or other appropriate investigation, blasting will not be conducted within 1,000 feet of <br />any building used as a dwelling, school, church, hospital, or nursing facility, and not within 500 feet of <br />• facilities including, but not limited to disposal wells, petroleum or gas-storage facilities, munidpal <br />waste storage facilities, fluid transmission pipelines, gas or oil collection lines, or water and sewage <br />MR-24 7 Revised 9/05 <br />