Copper prices fell on Thursday as a surprise interest rate hike by the Bank of Canada fuelled fears of hawkish central banks, while investors and traders cautiously awaited top consumer China to roll out further stimulus measures. Three-month copper on the London Metal Exchange was down 0.3% at $8,271.50 a tonne by 0452 GMT, while the most-traded July copper contract on the Shanghai Futures Exchange eased 0.2% to 66,540 yuan a tonne. LME aluminium dipped 0.2% to $2,214 a tonne, nickel eased 1.3% to $21,150 a tonne, zinc declined 1.2% to $2,369.50 a tonne, lead fell 0.5% to $2,035 a tonne and tin dropped 1.1% to ... (full story)