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Transit Mix Concrete Co. <br /> 444 E.Costilla Street,Colorado Springs,CO 80903 Office: (719)475-0700 Fax: (719)475-0226 <br /> • Total weight of explosives used per hole and the maximum weight or explosives <br /> used per 8-millisecond period <br /> • Type of Initiation system <br /> • Type and length of stemming used <br /> • Mats or other protections used <br /> • Type of delay detonator and delay periods used <br /> • Number of persons in the blasting crew <br /> • Reasons and conditions for each unscheduled blast <br /> Report forms to be used for data collection will be the same or similar to the example <br /> form shown on the following pages. <br /> 17 <br />