With the decline of the nuclear power industry subsequent to the Three Mile Island accident and the Chernobyl disaster, Westinghouse abandoned the Large facility by the early 1990s, and space was leased to a range of commercial tenants. In 1994, a group of former employees at the site formed Pittsburgh Materials Technology Inc. (PMTI) to build upon the capabilities developed by Westinghouse, including advanced refractory metal alloys. In 2007, PMTI is still melting, processing and testing alloys such as niobium-base, tantalum-base, and vanadium-base compositions for a range of customers in both the aerospace and industrial sectors.