Materials to be processed include tungsten concentrates (Wolframite and Scheelite) and tungsten carbide hardmetal scrap. Materials are sourced by parent companies, Sumitomo Electric Industries, Ltd. (Japan) and Buffalo Tungsten, Inc. (USA) and sent to Niagara Refining for toll processing.

Finished tungsten products are (1)Ammonium Paratungstate, (2)Blue Tungstic Oxide, and (3)Yellow Tungstic Oxide.