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Key Elements of a Blasting Plan <br /> Page 2 <br /> g. Diameter and depth of holes; <br /> h. Types of explosives used; <br /> i. Total weight of explosives used per hole and maximum weight of explosives used per 8- <br /> millisecond period; <br /> j. Initiation system; <br /> k. Type and length of stemming; <br /> I. Mats or other protections used; <br /> m. Type of delay detonator and delay periods used; <br /> n. Number of persons in the blasting crew; and <br /> o. Seismographic records where required including: <br /> i. Type of instrument sensitivity and the calibration signal of the gain setting or <br /> certification of annual calibration; <br /> ii. Exact location of instrument,the blast date and time, and the instrument <br /> distance from the blast; <br /> iii. Name of the person and firm taking the reading; <br /> iv. Name of the person and firm analyzing the seismographic record; and <br /> v. The vibration level recorded <br /> C:IUsersltc1lDocuments\Technical\Blasting\Key Elements of a Blasting Plan.docx <br />