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All blasting will be conducted to prevent personal injury and damage to property. Blasting will be <br />conducted in such a manner as to ensure compliance with the ground vibration limits set forth in Rule <br />4.08.4(10). Blasting will be conducted in accordance with the following equation: <br />W = (D/Ds)2, where <br />W = the maximum weight of explosives, in pounds, that can be detonated in any 8- <br />millisecond period during a blast; <br />D = the distance, in feet, from the closest blast hole to the nearest dwelling, public <br />building, school, church, or community or institutional building; <br />Ds = the scaled-distance factor, using the following values as described in Rule <br />4.08.4(10): <br />50 = when the distance from the closest blast hole to the nearest dwelling, <br />public building, school, church, or community or institutional building is 0 to 300 <br />feet; <br />55 = when the distance from the closest blast hole to the nearest dwelling, <br />public building, school, church, or community or institutional building is 301 to <br />5,000 feet; <br />65 = when the distance from the closest blast hole to the nearest dwelling, <br />public building, school, church, or community or institutional building is 5001 feet <br />or greater. <br />3.4.4 Records <br />The record will contain the following information (refer to Figures 3.4-2 and 3.4-3): <br />1. Name of operator conducting the blast. <br />2. Location, date and time of blast. <br />3. Name, signature, and license number of blaster and the names of blast helpers present. <br />4. Identification, direction, and distance, in feet, from the nearest blast hole to the nearest dwelling, <br />school, church, or community or institutional building either, a) not located in the permit area, or b) <br />not owned or leased by Trapper Mining Inc. <br />5. Weather conditions, including temperature, wind direction and approximate velocity. <br />6. Type of material blasted. <br />7. Number of holes and spacing. <br />8. Diameter and depth of holes. <br />3-32 <br />APPM r <br />APPro`r?: