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Today's Date: Time of blast: <br />Record Keeping <br />keeping must never be tolerated. In the event of litigation, the <br />absence of such documentation places a defendant in an extremely <br />precarious position. <br />One point that sometimes causes a certain amount of confusion, <br />and that can lead to argument, is the "shot to structure or <br />instrument" distance. The regulations require recording the <br />direction and distance from the nearest blast hole to the nearest <br />structure. From the point of view of vibration data collection and <br />vibration prediction, where the scaled distance is the basic <br />criterion, it is important to measure the distance from the center <br />of the group or row of holes that represent the maximum charge <br />weight per 8 ms delay. It may be that two or more groups of holes <br />having similar charge weights per delay may have to be considered. <br />In that event, the distance recorded would be that distance - and <br />charge weight per delay - that resulted in the lowest scaled <br />distance. In most cases, only academic differences will be <br />observed; but in case significant differences do appear, both <br />distances should be recorded and identified: <br />REPORT OF BLASTING OPERATION <br />(Military) <br />(Time ) Location of blast: <br />Supervisor, in- charge of blast: Name: Signature: Lic.P <br />(bo not /ncludiT <br />Commercial or (Company Owned or) <br />Distance form nearest hole to: (Circle one) Dwelling, School, Church,lnetitutional bldg.: ft.(Leneed Property) <br />Direction to property: !ISSN Weather Conditions at time of blast:( ) Cloudy ^_, Clear , Partial Overcase <br />Temp. , Barometric Reeding , Wind Description Remarks <br />Material blasted:( ) Overburden, Parting , Other Explain <br />Total number of holes shot: Burden ft. Spacing ft. <br />Depth of holes: From: ft TO ft. Diameter of holes: inches. <br />Type of explosives used:( ) AN- FO- Bagged_, Bulk , Other Explain <br />Total weight of <br />Explosives used: ff Decking: Yes No <br />Max. pounds detonated within any 8 ms period: P Max. number of holes detonated with any 8ma period: <br />Method of detonation:( ) Nonel , Electric cap , Other , Explain <br />Type of circuit used:( ) Series , Parallel , Nonel , Other Explain <br />Stemming information: Type used: ,Depth: ft., Was protective cover used? Yes No <br />Type of delay detonator used: . Minimum delay periods millisecond. <br />Distance from nearest hole to seisteccor: ft. Exact location of seisteccor: <br />Name of mine personnel servicing seisteccor: (print) <br />Name of firm analyzing seistector print -outs: <br />O V <br />u m Name of person analyzing print -outs: <br />p°p a e i Seistector reading of this blast: <br />g.%4 <br />Figure 50. <br />Typical blast record form. <br />103 <br />County: <br />State: <br />Permit: <br />'lwp : <br />Mine 1DA <br />