On Jan. 21, 2013, the copper 3-month price experienced the biggest change, rising 1.6 percent on the LME to $8,050 per metric ton. Also on the LME, the cash price of primary copper increased 1.6 percent to $8,084 per metric ton.

The prices of US copper producer grade 110 and 122 inched up 0.5 percent, while the price of US copper producer grade 102 finished the market day up 0.4 percent per pound.

For the fifth day in a row, the Japanese copper cash price remained essentially flat.

Chinese copper prices were mixed for the day. Chinese copper bar prices inched up 0.1 percent. The Chinese copper cash price rose 0.1 percent. The price of Chinese copper wire held steady. The price of Chinese bright copper scrap saw little movement.