Copper prices in London eased slightly on Wednesday, as traders and investors exercised caution ahead of the release of key economic data in China and in the United States. Three-month copper on the London Metal Exchange dipped 0.1% to $8,443 per metric ton by 0159 GMT, while the most-traded October copper contract on the Shanghai Futures Exchange rose 0.4% to 69,390 yuan ($9,525.05) a ton. The dollar index was almost unchanged from its previous close, as traders were cautious ahead of a slew of key U.S. economic data to be released later in the week, which could give further hint to how interest rates will move. A ... (full story)