Don't forget the veins that haven't been tapped. I would assume we have possible hidden treasures deep within the mountain which need to be explored.
I am not a geologist, but with the new technology we have today compared to 1903, I bet there is far more AU,AG than we realize.
I posted something a few months ago on an African mine which found deep within the earth a huge vein of gold. The mine is running 135 tons of ore a day.
I am speculating that with the early buybacks, I think an outside source is taking serious look at SFMI. It benefits PQ to buyback shares ASAP.