Can anyone assure me that the higher harvest grade will indeed...

Can anyone assure me that the higher harvest grade will indeed be acheived or have I been invested in a dud project the last 5 years? Am I the only one concerned here?

"Results of the trial are encouraging although the harvest grade of 5.4% K (12.0% K2SO4) is relatively
low. However, the laboratory trial was by necessity a single pass test. The Company believes that
harvest grades in excess of 8% K (17.8% K2SO4) will be achievable in the production phase by control of
brine flow and back mixing of process brines.
The next phase of pilot evaporation trials on Lake Disappointment will better define the evaporation
parameters, harvest products and yields. A schematic outline of the currently proposed flowsheet is
provided in Figure 2."