US copper futures opened with another round of sharp losses on Tuesday as fears over the economic impact of a potential flu pandemic and renewed jitters in the financial sector weighed on sentiment, but a slide in the dollar trimmed early losses. Copper for July delivery was down 4.00 cents, or 2 percent, to $1.9455 a lb by 10:20 am EDT (1420 GMT) on the New York Mercantile Exchange's COMEX division.
Morning range from $1.9990 to $1.9005, its lowest level since April 3.