Shanghai copper hit its highest in more than nine years on Tuesday while prices in London rose for a fourth straight session on tight supply and expectations of strong demand. The most-traded April copper contract on the Shanghai Futures Exchange SCFcv1 rose as much as 3% to 68,090 yuan ($10,542.21) a tonne, its highest since August 2011. Three-month copper on the London Metal Exchange CMCU3 rose 1.3% to $9,214 a tonne by 0252 GMT, having hit a 9-1/2-year high of $9,269.50 a tonne in the previous session. LME cash copper was at a $35.50 a tonne premium to the three-month contract CMCU0-3, showing tight nearby ... (full story)