KGHM Copper Miner Advances Most in Week as Metal Gains on Greece

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KGHM Polska Miedz SA, the copper producer with the biggest European mine output, climbed the most in a week as the metal advanced after Greek opinion polls showed greater support for pro-bailout parties.

The shares jumped as much as 2.1 percent, the steepest gain on a closing basis since May 21, and traded 1.7 percent higher at 120.2 zloty as of 9:36 a.m. in Warsaw.