USA’s Strategic Metal # 1 Manganese

Kitco.com reported on USA’s Strategic Metal # 1 Manganese:

Back in 1987 the American government classified a number of metals that were and still are considered strategic war & economically important metals. At that time as today, Manganese was in one of the top spots. But surprisingly many knew long before then about the relativity of Manganese availability to productivity in many sectors of military security and steel production as well as many other modern day uses. Was this 1987 classification a new revelation?

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