It's a collaboration pact and not a requirement to seek regulatory approvals outside of the existing provincial and federal ones. The decision to proceed with a project requires regulatory approval before you commit spending any significant amount of money. That's the situation Teck has encountered in Chile awaiting QB1 permits before they submit the QB2 SEIA. If the project economics look good enough then filing the EA is the next step. We should get some idea when the optimization work is done.