Commodity2005200620072008200920102011
Unrefined copper; copper anodes for electrolytic refining$213,536,395$391,158,880$252,968,220$319,030,086$28,677,683$43,731,817$36,540,607
Total$213,536,395$391,158,880$252,968,220$319,030,086$28,677,683$43,731,817$36,540,607