Ann: Quarterly Report, page-2

An uplifting Quarterly. Current drill program very exciting.


From the Q.
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Nagambie Resources envisages that the TBM-generated PASS rock from the North East Link will average around 1.0 million tonnes per year and that the two TBMs required will be operating continuously 24/7 as the tunnelling is the major critical path activity. At any particular time, both the TBMs could be tunnelling through PASS rock which would create significant operational issues in terms of PASS management.

When both the TBMs are simultaneously excavating PASS 24/7, the PASS rock will need to be trucked away continuously and managed 24/7 in accordance with the EMP procedures that apply at the receiving sites. Nagambie Resources considers that only underwater storage sites can accommodate such a large-scale 24/7 requirement by the project managers.


Lime treatment of PASS rock on a continuous 24/7 basis would have to cope with issues such as heavy rainfall, rainfall runoff, consistent lime blending / retention in soil and rock piles, and effective pH measuring of all the product heaps as they progress through treatment in order to test for acid drainage formation. Another significant environmental issue is the emissions produced by the lime treatment sites in Melbourne. Nagambie Resources has calculated that they produce more than four times the total equivalent carbon emissions than an underwater storage site such as the Nagambie Mine. The equivalent carbon emissions from the production of lime needed to treat the PASS, and the lime blending process itself, are more than five times greater than the additional equivalent emissions resulting from the longer trucking distance to Nagambie.

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The above extract from the Qtrly brilliantly summarises the situation regarding PASS and the problems created by large volumes being generated 24/7. It puts NAGs pits at the forefront of storage options available to the consortium, when it considers PASS disposal. Every other option has to be seen as inferior.

Nanu