Copper Advances as Dollar's Drop Increases Demand

Sept. 20 （Bloomberg） -- Copper climbed for a third day in London as the dollar weakened, boosting demand for raw materials as alternative investments. Zinc and lead advanced.

Aluminum prices may be supported from as many as two exchange-traded funds in the metal later this year, Societe Generale said.

 --Copper rose $75, or 1 percent, to $7,795 a metric ton on the London Metal Exchange at 7:07 a.m. Relative Strength Index 65.3.

 -- Aluminum gained 0.7 percent to $2,196 a ton. RSI 62.

 -- Zinc jumped 2.1 percent to $2,196.5 a ton. RSI 59.3.

 -- Lead rose 0.5 percent to $2,227.75 a ton. RSI 60.

 -- Nickel gained 0.9 percent to $23,401 a ton. RSI 66.2.

 -- Tin was unchanged at $23,600 a ton. RSI 75.5.