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The project was suspended by Chatham Rock Phosphate (CRP) in November 2017. At that time, phase 1 was partly finished and steps 1-3 of phase 2 were done. The prototype guidelines were not drafted yet. The results were reported in an internal memo and steps 2 and 3 of Phase 2 are reported in a technical report of Antea Group, to whom this part of the work was subcontracted. In the results section, only part of phase 1 and part of phase 2 is summarized.  

 The results are reported in the Final report.