Clarification. There is no legacy for there is no mine, yet.
NDM estimate at $620 million (SEDAR) excluding investment/expenditure by Teck ($ unknown); Mitsubishi ($ unknown); Rio (est. $131 million); Anglo (est. $541 million) and Quantum (est. $37.5 million). Anglo produced some level of feasibility, as well, likely Rio. The proponent has stated expenditures exceeding $1 billion-unable to precisely allocate.
A resource is worth nothing other than measured/inferred (unknown economics) discussion. Basically it's metal in the ground. A proven/probable mineral ore reserve is worth something. The worth is demonstrated by a Preliminary/Final Feasibility Study meeting regulatory standards which the proponent has stated has not been completed. Understanding these simple regulatory and economic classifications as identified by both Canadian and U.S. SEC regulation is basic to any mineral development economic discussion.
Investing in potential mining companies requires a basic understanding of exploration, feasibility, permitting, construction and operations.