Greenstone will hold for the life of the mine, imo I was rereading an article from December 1, 2017. It said that "Greenstone remains a long-term and supportive shareholder with significant stakes in two of the companies that spoke at the Mining Capital event, Excelsior Mining and Coro Mining."
The article also said that "Greenstone had looked at around 1,000 companies and that so far had chosen nine to invest in."
My take on this: Greenstone has reached the same conclusion as me - it is smarter to hold MIN and not hope for a buyout. Why? Because after you are bought out, where will you put your money? Greenstone already checked out the other companies. I know some on this board think they will find the next multi-bagger, but that is not guaranteed, and there is a lot of risk involved. MIN has such low risk (because of the low production cost per lb. and low political risk) that it is foolish to go elsewhere.
MIN will be spitting out money for 24 years, even if copper prices take a dive. Probably a lot more money than people are guessing. Why would you give that up?