U.S. aluminum premiums have fallen to their lowest in more than three years as imports and scrap supplies remain high and merchants unwind long positions, extending an unprecedented, months-long rout. The premiums that fabricators and merchants pay on top of benchmark London Metal Exchange prices for delivery in the U.S. Midwest have dropped to 8-9 cents per lb from 9-10 cents last week and 13-14 cents a month ago, traders said. Those are the lowest prices since early 2012.
