US copper futures fell again on Thursday, pushing below support that held a day earlier and triggered automatic sell orders. But traders said they mostly viewed copper losses as a drift down within its wider price range, pressured by a jump in exchange warehouse inventories and the lack of a prop as a Chilean labour strike ended this week.
Copper for July delivery fell 6.50 cents to $3.7690 a lb on the Comex metals division of the New York Mercantile Exchange. Range extends down to low at $3.7530 from high at $3.8510 a lb.