US copper futures fell more than 2 percent early Friday as waning confidence in the global economic outlook and stalled congressional talks surrounding a US $700 billion financial rescue plan re-energised the metal's downtrend, traders said.
Copper for December delivery slipped 6.30 cents to $3.0715 a lb by 10:22 am EDT (1422 GMT) on the New York Mercantile Exchange's Comex division.