LME 3-month Futures LME Spot/3-month B/CCopper 3195/3215 c 35/30.8 cTin 10550/10750 b 22/43 bLead 1111/1121 c 8/3 cZinc 1113/1123 c 24/18 cAluminium 1380/1390 c 34.5/32.5 cNickel 11250/11450 c 76/46 cc for contango,b for backwardation