Copper prices rose again on Tuesday with investors weighing prospects for a fast-tracked stimulus package in the US.
On the Comex market, copper for delivery in March advanced 1.5% to $3.723 a pound ($8,190 a tonne). If it closes at these levels it would be the highest since February 2013.
The metal has rallied on hopes that economic stimulus in the US will further boost demand, and underpinned by decade-low China stocks.