UPDATE 1-Alcoa's spinoff plan sparks dispute with Australian partner Alumina
May 30, 2016 at 09:57 AM EDT
MELBOURNE, May 30 (Reuters) - Australia's Alumina Ltd has "serious concerns" about the impact of a demerger plan of U.S. partner Alcoa Inc on the pair's bauxite and alumina production joint venture, the Australian company said on Monday.
