U.S. Government Officially Declares All Three Superalloy
U.S. Government Officially Declares All Three Superalloy Metals from Nebraska Project as “Critical Minerals”
https://globenewswire.com/news-release/2018/05/17/1508575/0/en/U-S-Government-Officially-Declares-All-Three-Superalloy-Metals-from-Nebraska-Project-as-Critical-Minerals.html