fyiOne of the largest users of APT tungsten concentrate in the US is Elmet, https://www.elmettechnologies.com/. Elmet is located in Maine and Sisson is 20km from Maine. Other large users of tungsten concentrate APT are found in Michigan, Ohio, Pennsylvania, New York(do your DD). Sisson would be the largest miner of tungsten ore and producer of APT in North America. At the moment, tungsten is not mined at all in the USA. Two small mines are in the planning stage. The US DoD is very much into securing supplies from Canada which include Fireweed in the north and Sisson in a geographical location that would allow it to service the USA and close to the Atlantic to service Europe. I just hope the Canadian politicians wake up.