This is something very basic, that I should already know, but I'm actually uncertain.

IF Cliffs were to buy one of KWG or SPQ and not the other, and proceeded to turn BD into a mine, what happens to the remaining company?

If the "outside" company still owns 27% of the deposit, how does that benefit the company? If Cliffs has control by owning 73%, can they do anything underhanded such as "selling the deposit for $1" to another company, and shutting the 27% owner out completely?