The resilience of the London Metal Exchange base metals to the decline in copper prices suggests investors remain positive towards these markets, a broker says. "Scale-down buying and bargain hunting is being uncovered at every attempt to push the base metals lower, particularly aluminum and nickel," the broker adds. LME aluminum trades last at $2,719 a metric ton, down 1% on the day but up 2% on Wednesday's low, while LME nickel is last at $32,500/ton, down 1% on the day but 4% higher than Wednesday.