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Flyrock Control Plan: <br /> Flyrock is defined as dirt, mud,stone, or fragmented rock that is propelled from the <br /> blasting area by the force of the blast. Flyrock is never expected in a blast, but due <br /> to the nature of explosives it can happen. Flyrock can be minimized and eliminated <br /> by following the basic blasting guidelines below. Transit Mix Concrete Company <br /> adheres to these guidelines for all blasting competed onsite. <br /> • Proper blast pattern design including proper burden and spacing based on <br /> hole size and by ensuring there is adequate space in front of the pattern to <br /> allow fractured material to move horizontally. <br /> • Proper blast hole loading,ensuring hole quality is adequate and explosive <br /> column height and stemming material heights meet calculated requirements <br /> for safety. <br /> • Setting up blast patterns so that the direction of the blast will be away from <br /> permanent manmade structures. <br /> • Using appropriate blast pattern timing sequences so the pattern is shot <br /> systematically and in proper order. <br /> Documentation: <br /> The third party blasting contractor will prepare a paper record of each blast that is <br /> completed at the quarry. Copies of each blast report will be kept on file in the scale <br /> house/office building for reference.All records, including blast statistics and blast <br /> monitoring,will be kept on file for a minimum of 3 years. Forms to be used for data <br /> collection will be the same or similar to the example form shown on the following <br /> pages. <br />