First of all, the statement, if I can just say it again, is that the lack of science at the beginning caused the situation where there was underestimation of the size required for the tailings ponds. When you put the tailings in tailings ponds, the fluid tailings stay in the pond for a very long time before they compact. So they needed more and more tailing ponds.
It may not have been expressed very well here, but the lack of science at the beginning in understanding the clays, rather than the fines, created that.