Alcoa (headquartered in Pittsburgh, Pa.; announced that its Alcoa World Alumina and Chemicals affiliate has signed a memorandum of understanding (MOU) with Vietnam National Coal-Minerals Industries Group (Vinacomin) to explore the feasibility of creating a joint venture to develop a bauxite mine and alumina refinery in the Dak Nong Province of Vietnam. The joint venture would be 51 percent held by Vinacomin and 49 percent held by Alcoa. Alcoa will be responsible for the marketing of alumina produced by the refinery.