I found this Wired article from 2018 with interesting information https://www.wired.com/story/book-excerpt-science-of-ultra-pure-silicon/ https://www.wired.com/

I found this Wired article from 2018 with interesting information https://www.wired.com/story/book-excerpt-science-of-ultra-pure-silicon/ https://www.wired.com/story/book-excerpt-science-of-ultra-pu.... But I cannot find actual numbers to help understand how important that mine is. Are we talking about 1, 10, 50, 70+ percent of the ultra pure quarts market? From what I can see the US doesn’t seem to be a large player