Copper jumped to $4.24 a pound ($9,359.23 a tonne) on Friday, the highest in 14 months.

The rally began in early February on mounting risks to supply.

At the same time, there has been a return to growth in the manufacturing sector, which has strengthened demand for copper.

The base metal is used in a plethora of manufacturing processes, so commodity analysts keep a close eye on manufacturing data to get an idea in which direction copper prices are headed.