First tungsten from Rwanda arrives in Pennsylvania. Image from Trinity Metals. The first shipment of tungsten concentrate (WO3) from Trinity Metals’ Nyakabingo mine in Rwanda arrived this week at Global Tungsten and Powders’ (GTP) plant in Towanda, Pennsylvania. Officials from Trinity Metals, GTP and Traxys were joined at the facility by the US Ambassador to Rwanda and The Deputy Rwandan Ambassador to the US to witness the arrival. Under the commercial agreement reached in August, GTP’s processing facilities have begun receiving material from Rwanda for processing into high-quality tungsten and tungsten carbide powders that are used to produce finished components for industrial end uses.