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    Construction waste is defined as relatively clean, heterogeneous building materials generated from the various construction activities (Tchobanoglous et al., 1993).Possible sources of generating construction waste can be classified under six main categories (Al-Ansary et al., 2004a; Gavilan, 1994), namely: design source, procurement source, handling of materials


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    The next sequence is the slowest operation, the blocks pass. However, this pass moves most of the material. It involves using the key to access to bottom of the material to lift it up to spoil or to an elevated bench level. The final cut if required is a

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