Copper prices in London hit their lowest in seven weeks on Tuesday under pressure from a weaker yuan, which reduced the purchasing power of top metals consumer China, and rising inventories. Three-month copper on the London Metal Exchange (LME) fell 2% to $9,706 per metric ton by 1004 GMT after hitting $9,691, the lowest since April 23. “Base metals prices continue to come under pressure after having rallied sharply through May,” Standard Chartered analyst Sudakshina Unnikrishnan said. Copper, used in power and construction, touched a record high of $11,104.5 on May 20. “While copper benefits from a supportive ... (full story)