Warren Buffett values tungsten the way other investors value gold.
Which makes sense because tungsten has more primary uses then gold.
Tungsten, not so easy to get ahold of. Critical for power generation in 2nd half of the 21st century. Critical for aerospace and spacecraft construction for similar reasons.
I must thank the investors who pointed out WFEMF to me as one of the most promising early stage tungsten plays that is entirely run within the boundaries of a civilized westernized nation.