Copper Base Scrap Index Falls 4.7% in May 2011

June 15 2011 – The Producer Price Index for finished goods rose 0.2 percent in May, seasonally adjusted, the
U.S. Bureau of Labor Statistics reported today.

Crude core: The index for crude nonfood materials less energy moved down 0.9 percent in
May. For the 3-month period ending in May, crude core prices decreased 0.7 percent after
advancing 10.0 percent from November to February. A major contributor to the monthly decline
was the index for copper base scrap, which fell 4.7 percent. A decrease in the index for corn also
was a significant factor in the crude core decline.