Ann: Pre-Feasibility Study Completed for Mackay SOP Project, page-126

So what I want to know is how are Agrmin getting a 50% recovery from the in situ 20Mt for the 0-3m zone. The specific yield or drainable figure is 12.5% (of total volume) or circa 5Mt from 20Mt of contained brine so obviously that figure is meaningless...in specific yield equivalent terms they are now getting 25% instead of 12.5% so essentially double. Is this just a function of brine and rain outside of the modelled zone recharging it ? imo companies need to provide more detail on this in the DFS as they are essentially saying we can extract double the drainable figure and possibly even more considering the comments in the PFS. cheers