Commodity2005200620072008200920102011
Copper waste & scrap$1,718,270$4,662,011$6,302,448$6,669,068$2,149,624$8,127,794$6,979,543
Total$1,718,270$4,662,011$6,302,448$6,669,068$2,149,624$8,127,794$6,979,543