Commodity2005200620072008200920102011
Unrefined copper; copper anodes for electrolytic refining$10,781,359$8,275,205$2,657,949$4,001,990$5,660,110$16,342,838$17,971,487
Total$10,781,359$8,275,205$2,657,949$4,001,990$5,660,110$16,342,838$17,971,487