Namibia – During the June 2015 quarter Bannerman Resources, the ASX/TSX/NSX-listed uranium company, achieved a significant milestone, notably the successful commissioning of the Etango heap leach demonstration plant and completion of Phase 1 of the demonstration plant programme.
On 15 July 2015 Bannerman announced positive results from Phase 1 of the Etango heap leach demonstration plant programme which strongly support the assumptions and projections incorporated in the definitive feasibility study (DFS). The results include:
- Fast, high and uniform leach extraction on a 121.6 t sample – within 20 days average total leach extraction of 94% for the four cribs (a type of testing not previously conducted) and 93% for the columns (similar to that achieved in previous laboratory testing).
- Low sulphuric acid consumption – on average less than 16 kg/t (compared with DFS projection of 18 kg/t).
- Geotechnical stability – visual observations during the unloading of the cribs confirmed the uniform percolation through the material, integrity of the agglomerate and geotechnical stability of the heap.
- The similar performance of the four larger scale (30 t sample) cribs to the eight (200 kg sample) columns may be an indication of potential upside related to the projection of the previous column testing results to the full scale heap leach pad performance in the DFS.
“The company has made significant progress during the quarter with the successful commissioning of the heap leach demonstration plant and the announcement of the exciting results from Phase 1 which strongly support the assumptions and projections incorporated in the DFS. Post quarter end we commenced Phase 2 which aims to replicate the results in Phase 1,” says Bannerman’s CEO, Len Jubber.
“Further, the project optimisation work on the resource modelling and mine planning aspects of the DFS is progressing well and it is anticipated that updated mineral resource and ore reserves estimates will be released by the end of the December 2015 quarter.”
“The Etango project continues to progress and remains one of the very few globally significant uranium projects that can realistically be brought into production in the medium term. The heap leach demonstration plant programme further de-risks the Etango development path and will assist Bannerman to attract JV / funding partners.”
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