RE:RE:RE:RE:Zinc at 1.82 - unreal. Forgot to add, grades are important but not the deciding factor to a profitable mining operation. Even if one has bonanza grades, if there's no infrastructure or is deep in the ground, PEA may result it not being as great a return as lower grade but with infrastructure already built or near surface. There are profitable mining operations for surface mining, and there are different processes for underground mining. Blanket statement on grades doesn't mean much.
PEA will determine the IIR which deems the project's feasibility and profitability.