HOUSTON, Sept. 4, 2025 /PRNewswire/ -- Metallium, Ltd. (ASX: MTM; OTCQX: MTMCF), the company that extracts high-value critical minerals such as gallium, germanium, antimony, rare earth elements and gold from feedstocks including refinery scrap, e-waste and monazite, announced the appointment of Travis Langster to the Advisory Board of Flash Metals USA. Flash Metals USA is Metallium's 100% owned U.S. subsidiary commercializing the Flash Joule Heating (FJH) technology. Travis Langster Michael Walshe, Man ...