Laserfiche WebLink
velocity does not exceed 1 inch per second at a 95% confidence interval, the standard equation <br />W = (D /DS)z ,'will not need to be used. See subsection 4.0 for an explanation of how blasts are <br />designed at New Horizon North. <br />Seismographs will typically be placed at the closest non - company owned structures to the <br />actual blast site or at some point in between a blast and a non - company owned structure. A <br />typical seismic machine report is shown in Appendix 2.05.3(6)(a) -3, along with a description of <br />the device including capability and sensitivity. In addition, all seismic report(s) will be attached <br />to the regular blast report that is kept on file in the mine office. <br />WFC has five (5) blast monitoring devices at present time. These machines will usually be <br />placed at the nearest inhabited dwelling(s) along with other none inhabited structures such as <br />sewer pipelines, irrigation ditches and other structures. The closest structures will take <br />monitoring precedence over further structures due to the limited number of monitoring <br />machines. <br />A sample blaster's form is attached as Appendix 2.05.3(6)(a) -5. <br />3.1 Structures with 1000 feet of Blasting Operations <br />68) Antonelli, Thomas & Mary <br />P.O. Box 578 <br />Nucla, Colorado 81424 <br />65) Bortles, Ken <br />26491 Z Rd <br />P.O. Box 97 <br />Nucla, Colorado 81424 <br />64) Zunich, Charles & Katherine <br />26585 Z Rd, <br />' W = maximum weight of explosives (lbs) that can be detonated in any 8- millisecond period; D = the <br />distance (ft) from the blast to the nearest structure; and DS = the scaled distance factor (see Rule <br />4.08.4(10)(c)(ii)) <br />SECTION 2.05.3(6)(a) PAGE - 3 - JULY 2013 <br />OZ <br />APPS <br />/7 Jul ' Zol5 <br />