,                        ,,                        ,, LME : Zinc 15-Month    ,, LME : Zinc 27-Month    ,
                    , LME : Zinc Cash        ,, LME : Zinc 3-Month     ,,                        ,,                        ,
                    , Zinc; Nearest expirati ,, 2nd nearest expn       ,, Third nearest expn     ,, Fourth nearest expn    ,
                    , on                     ,,                        ,,                        ,,                        ,
                    , Jan.1989 to Mar.28.2013,, Jan.1989 to Mar.28.2013,, Jan.1989 to Mar.28.2013,, Jan.1992 to Mar.28.2013,
                    ,                        ,,                        ,,                        ,,                        ,
2013.1              ,             1870,  ---  ,             1898,  ---  ,             2007,  ---  ,             2048,  ---  
2012.4              ,             2027,  ---  ,             2044,  ---  ,             2120,  ---  ,             2190,  ---  
2012.3              ,             2087,  ---  ,             2112,  ---  ,             2192,  ---  ,             2257,  ---  
2012.2              ,             1842,  ---  ,             1839,  ---  ,             1882,  ---  ,             1900,  ---  
2012.1              ,             2002,  ---  ,             2009,  ---  ,             2043,  ---  ,             2033,  ---  
2011.4              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2011.3              ,             2467,  ---  ,             2489,  ---  ,             2555,  ---  ,             2584,  ---  
2011.2              ,             2314,  ---  ,             2331,  ---  ,             2382,  ---  ,             2395,  ---  
2011.1              ,             2337,  ---  ,             2356,  ---  ,             2417,  ---  ,             2439,  ---  
2010.4              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2010.3              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2010.2              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2010.1              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2009.4              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2009.3              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2009.2              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2009.1              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2008.4              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2008.3              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2008.2              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2008.1              ,             2391,  ---  ,             2412,  ---  ,             2422,  ---  ,             2390,  ---  
2007.4              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2007.3              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2007.2              ,                    na,  ,                    na,  ,                    na,  ,                    na,  
2007.1              ,             3467,  ---  ,             3440,  ---  ,             3165,  ---  ,             2830,  ---  
2006.4              ,             4331,  ---  ,             4251,  ---  ,             3803,  ---  ,             3368,  ---  
2006.3              ,             3360,  ---  ,             3346,  ---  ,             2918,  ---  ,             2418,  ---  
2006.2              ,             3260,  ---  ,             3260,  ---  ,             2757,  ---  ,             2290,  ---  
2006.1              ,             2690,  ---  ,             2680,  ---  ,             2368,  ---  ,             2023,  ---  
2005.4              ,             1712,  ---  ,             1717,  ---  ,             1590,  ---  ,             1465,  ---  
2005.3              ,             1411,  ---  ,             1410,  ---  ,             1368,  ---  ,             1285,  ---  
2005.2              ,             1223,  ---  ,             1232,  ---  ,             1230,  ---  ,             1168,  ---  
2005.1              ,             1349,  ---  ,             1365,  ---  ,             1370,  ---  ,             1318,  ---  
2004.4              ,             1270,  ---  ,             1257,  ---  ,             1208,  ---  ,             1145,  ---  
2004.3              ,             1079,  ---  ,             1097,  ---  ,             1133,  ---  ,             1133,  ---  
2004.2              ,              967,  ---  ,              988,  ---  ,             1013,  ---  ,             1017,  ---  
2004.1              ,             1086,  ---  ,             1104,  ---  ,             1092,  ---  ,             1053,  ---  
2003.4              ,             1008,  ---  ,             1021,  ---  ,             1013,  ---  ,             1003,  ---  
2003.3              ,              825,  ---  ,              842,  ---  ,              878,  ---  ,              900,  ---  
2003.2              ,              783,  ---  ,              797,  ---  ,              832,  ---  ,              858,  ---  
2003.1              ,              763,  ---  ,              782,  ---  ,              815,  ---  ,              830,  ---  
2002.4              ,              749,  ---  ,              763,  ---  ,              790,  ---  ,              808,  ---  
2002.3              ,              735,  ---  ,              756,  ---  ,              810,  ---  ,              845,  ---  
2002.2              ,              796,  ---  ,              817,  ---  ,              872,  ---  ,              903,  ---  
2002.1              ,              825,  ---  ,              846,  ---  ,              902,  ---  ,              933,  ---  
2001.4              ,              767,  ---  ,              783,  ---  ,              842,  ---  ,              873,  ---  
2001.3              ,              782,  ---  ,              799,  ---  ,              860,  ---  ,              898,  ---  
2001.2              ,              870,  ---  ,              890,  ---  ,              957,  ---  ,              982,  ---  
2001.1              ,              977,  ---  ,              993,  ---  ,             1038,  ---  ,             1053,  ---  
2000.4              ,             1021,  ---  ,             1042,  ---  ,             1080,  ---  ,             1093,  ---  
2000.3              ,             1185,  ---  ,             1152,  ---  ,             1137,  ---  ,             1113,  ---  
2000.2              ,             1148,  ---  ,             1161,  ---  ,             1155,  ---  ,             1120,  ---  
2000.1              ,             1098,  ---  ,             1116,  ---  ,             1135,  ---  ,             1125,  ---  
1999.4              ,             1239,  ---  ,             1245,  ---  ,             1178,  ---  ,             1150,  ---  
1999.3              ,             1180,  ---  ,             1200,  ---  ,             1142,  ---  ,             1103,  ---  
1999.2              ,             1008,  ---  ,             1031,  ---  ,             1067,  ---  ,             1088,  ---  
1999.1              ,              990,  ---  ,             1008,  ---  ,             1042,  ---  ,             1075,  ---  
1998.4              ,              916,  ---  ,              934,  ---  ,              995,  ---  ,             1040,  ---  
1998.3              ,              971,  ---  ,              995,  ---  ,             1068,  ---  ,             1110,  ---  
1998.2              ,              989,  ---  ,             1015,  ---  ,             1075,  ---  ,             1092,  ---  
1998.1              ,             1093,  ---  ,             1116,  ---  ,             1155,  ---  ,             1180,  ---  
1997.4              ,             1091,  ---  ,             1113,  ---  ,             1178,  ---  ,             1203,  ---  
1997.3              ,             1456,  ---  ,             1358,  ---  ,             1340,  ---  ,             1320,  ---  
1997.2              ,             1423,  ---  ,             1428,  ---  ,             1332,  ---  ,             1267,  ---  
1997.1              ,             1259,  ---  ,             1279,  ---  ,             1233,  ---  ,             1185,  ---  
1996.4              ,             1046,  ---  ,             1065,  ---  ,             1103,  ---  ,             1122,  ---  
1996.3              ,              991,  ---  ,             1016,  ---  ,             1090,  ---  ,             1113,  ---  
1996.2              ,             1017,  ---  ,             1041,  ---  ,             1117,  ---  ,             1152,  ---  
1996.1              ,             1066,  ---  ,             1089,  ---  ,             1125,  ---  ,             1132,  ---  
1995.4              ,             1001,  ---  ,             1025,  ---  ,             1070,  ---  ,             1090,  ---  
1995.3              ,             1017,  ---  ,             1038,  ---  ,             1108,  ---  ,             1125,  ---  
1995.2              ,             1015,  ---  ,             1037,  ---  ,             1078,  ---  ,             1098,  ---  
1995.1              ,             1043,  ---  ,             1067,  ---  ,             1105,  ---  ,             1117,  ---  
1994.4              ,             1135,  ---  ,             1159,  ---  ,             1169,  ---  ,             1162,  ---  
1994.3              ,             1007,  ---  ,             1030,  ---  ,             1063,  ---  ,             1075,  ---  
1994.2              ,              948,  ---  ,              971,  ---  ,             1023,  ---  ,             1060,  ---  
1994.1              ,              938,  ---  ,              957,  ---  ,             1015,  ---  ,             1057,  ---  
1993.4              ,             1001,  ---  ,             1019,  ---  ,             1078,  ---  ,             1126,  ---  
1993.3              ,              893,  ---  ,              907,  ---  ,              967,  ---  ,             1009,  ---  
1993.2              ,              922,  ---  ,              940,  ---  ,             1015,  ---  ,             1070,  ---  
1993.1              ,              982,  ---  ,             1001,  ---  ,             1077,  ---  ,             1128,  ---  
1992.4              ,             1058,  ---  ,             1075,  ---  ,             1143,  ---  ,             1188,  ---  
1992.3              ,             1289,  ---  ,             1285,  ---  ,             1255,  ---  ,             1249,  ---  
1992.2              ,             1352,  ---  ,             1312,  ---  ,             1230,  ---  ,             1225,  ---  
1992.1              ,             1267,  ---  ,             1265,  ---  ,             1240,  ---  ,             1240,  ---  
1991.4              ,             1178,  ---  ,             1118,  ---  ,             1135,  ---  ,                    na,  
1991.3              ,             1016,  ---  ,             1036,  ---  ,             1075,  ---  ,                    na,  
1991.2              ,             1065,  ---  ,             1074,  ---  ,             1105,  ---  ,                    na,  
1991.1              ,             1196,  ---  ,             1185,  ---  ,             1165,  ---  ,                    na,  
1990.4              ,             1251,  ---  ,             1251,  ---  ,             1245,  ---  ,                    na,  
1990.3              ,             1397,  ---  ,             1385,  ---  ,             1310,  ---  ,                    na,  
1990.2              ,             1767,  ---  ,             1660,  ---  ,             1370,  ---  ,                    na,  
1990.1              ,             1605,  ---  ,             1549,  ---  ,             1290,  ---  ,                    na,  
1989.4              ,             1338,  ---  ,             1280,  ---  ,             1185,  ---  ,                    na,  
1989.3              ,             1679,  ---  ,             1680,  ---  ,             1470,  ---  ,                    na,  
1989.2              ,             1730,  ---  ,             1608,  ---  ,             1415,  ---  ,                    na,  
1989.1              ,             1778,  ---  ,             1752,  ---  ,             1360,  ---  ,                    na,