Considering the revelations in the linked article, miners are very clearly and grossly undervalued given the huge savings in energy costs (from lower oil prices), expecially as compared to their generally lower valuations.

Take the following chart, for example. It compares an oil market index to a copper miners index, showing miners doing worse by a broad margin.

Draw your own conclusions, but something HAS TO change here. The only question is when?

http://finance.yahoo.com/echarts?s=COPX+Interactive#{%22range%22%3A%226mo%22%2C%22lineType%22%3A%22combo%22%2C%22scale%22%3A%22linear%22%2C%22comparisons%22%3A{%22^XOI%22%3A{%22color%22%3A%22%23cc0000%22%2C%22weight%22%3A1}}}