(MB) A 9% jump in the US Midwest-delivered premium this week has further fueled a bullish sentiment in the global aluminium market. US premiums hit a two-and-a-half year high following Section 232 developments Rotterdam premiums move up alongside US increases, with speculation material could be routed to US Premiums in Asia remain steady, though market bullish as a result of US increases Brazilian premiums expected to stay flat until after Carnival holidays US premiums hit May 2015 high The US Midwest-delivered aluminium premium jumped 9% to a two-and-a-half-year high of 10.25-10.75 cents per lb on Tuesday January 16, up from 9.5-9.75 cents a week earlier, as producers aggressively offered higher numbers on the possibility that US government could soon implement stiff tariffs. There has been growing speculation that the US government could impose protectionist measures following its Section 232 probe into aluminium imports. The US Department of Commerce has until January 22 to submit its findings to the White House, which will then have 90 days to act.