This article at FP Posted is clickworthy for anybody who needs real-world examples that a bull market in something results in increased supply — which ultimately will end said bull market. At current zinc prices, small zinc miners are in in financial trouble. But while prices are down 60% from their peak, they are only back at 2005 levels. Obviously, these companies had established these mines under the premise of high prices. And going forward? Any recovery in prices will ultimately mean the taps get turned back on, putting a drag on price recovery.