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The worst part is that most of number 3 is self imposed by the ridiculous amount of environmental review and litigation delays surrounding that process. Sure, cost of labor is some of it, but really it's not very much in comparison.
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Having seen some former open pit mines I'm not entirely sure the environmental review is "ridiculous." One of them was basically a huge open pit full of acid.
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Mine the metal or do without the tech that uses it. You have to choose. Years of environmental review do not help.
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That pit also happens to be a great place to do rare earths extraction since there is zero chance of it ever being cleaned up.

The acid is natural btw just from things leeching out of the rock walls.

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Tungsten demand is real and bulk sources are quite scarce, today. It would be helpful if the historical charts went back farther than 2016. Where did the US get Tungsten in the 80s and 90s? South Korea, China, and Russia. The US and Canada had Tungsten mines, but the value wasn't there due to international pricing undercutting the industry. America's dogged federal agenda to break free of all Chinese influence or Capitalism, which will go first? We know the answer.
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