During the detailed engineering phase of the project, consideration would be given to using new flotation technology that is currently undergoing full scale testing.

I don't know what this is, but it is interesting to read how they envisioned improving the project from the pre-feasibility stage. I'm not sure whether these measures were incorporated.

• Further improvements to the process design based on additional metallurgical test work, for example:
  • optimizing primary and secondary grind size -- thus reducing grinding circuit size and power;
  • optimizing rougher and cleaner flotation circuits -- thus reducing both size and number of flotation cells;
  • optimizing concentrate grades;
  • optimizing solid/liquid separation -- thus reducing size of thickeners and filters.
• Optimize tailings deposition method;
• Optimization of mill location;
• Inclusion of revenue from rhenium;
• Increasing the overall resources of the deposit;
• Conversion of Inferred Resources into Measured and Indicated Resources; and
• Sharing of infrastructure development costs and power with neighbouring potential producers and other stakeholders.