Hafnium

When this interview came out in September, I was pretty busy with other stuff. So I just listened to it again and (around 10:30) learned something new: They are looking at the possibility of producing Hafnium (up to 300 tons).  Question still is whether they can do it economically.

Same problem of course with tantalum (12:15). Looks like we will start with a plant that won't produce either, but leaves the option to later add a circuit or two ...  

IIRC from some older discussions, recovering the discussed 50% of the contained tantalum (which was the most feasible number) could add up to 30 mio revenue / year. Hafnium seems to trade around 900 US$ (99%), so 300 tons would translate to 27 mio revenue.