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L:R. Perino ► Page 6 .rril 27, 1993 <br /> Figure 1. Blast damage zones in massive rock adjacent to a <br /> fully-coupled blasthole (Morhard et al, 1987, p 175) <br /> ~� Legend <br /> 1 Crushed Zone <br /> 2 Setweir Fractured Zone <br /> 3 Moderately Fractured Zone <br /> ( ` < Least Fractured Zone <br /> 1 <br /> t S Rode Undamaged <br /> Original i 1 <br /> 1 <br /> Radius i ©1 . 2•. ; S <br /> 3 l < <br /> Expanded - <br /> Borehole <br /> after <br /> Oetonatfoa / I <br /> � / <br /> i / <br /> i <br /> le <br /> i <br /> .01 <br />