In case you haven't noticed, a mini boom is emerging in some areas of the commodities market, especially in the arena of base metals! Prices for copper hit their highest level in nearly three years Monday, and zinc sits at its highest price in a decade. Aluminum climbed to a three-year peak last week, and iron ore has rallied 35% since the end of May. Shares of miners like Freeport McMoran also have soared 28 percent.