COMEX Copper extended sharp gains from previous session and surged past the crucial $6 per pound mark on Tuesday morning in Asia. Tight inventories and new age demand drivers are boosting gains in the red metal. Besides, overnight equities in US regained ground supporting the commodity. The Dow jumped 594.79 points or 1.2 percent to 48,977.18, the Nasdaq advanced 160.19 points or 0.7 percent to 23,395.82 and the S&P 500 climbed 43.58 points or 0.6 percent to 6,902.05. The counter has zoomed near record highs and currently trades up nearly 1% at $6.03 per pound following a sharp spike of 5% yesterday. On MCX, Copper futures are trading around Rs 1299 per kg.