COMEX Copper futures plummeted after a surge above $6 per pound failed to hold. Strength in dollar overseas also contributed to the slide in red metal which is quoting at $5.99 per pound, down 2.8% on the day. MCX Copper jumped 8.57% to trade at Rs 1435 per kg yesterday. Meanwhile, the Dow ended the day up 55.96 points or 0.1 percent at 49,071.56, while the S&P 500 closed down just 9.02 points or 0.1 percent at 6,969.01. The tech-heavy Nasdaq ended the day more firmly negative, down 172.33 points or 0.7 percent at 23,685.12, although it had tumbled by as much as 2.6 percent.