Aluminum is a partial substitute for copper; currently copper is more then two times more expensive then the same weight of aluminum. Aluminum is also a component of the Deutsche-bank commodities index DBLCI which is tracked by the DBC ETF. [Blockierte Grafik: http://photos1.blogger.com/blogger/7214/1988/1600/SharpChartv05.jpg] source: http://cmd-chart.blogspot.com/
