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Introduction
Imagine it's January 1848 and you're a construction worker building a timber mill in the Western foothills of the Sierra Nevada mountains. Your boss is splashing around frantically in the water running through the canal at first It looks like he's lost something important But when he finally stops splashing all he's holding is a handful of pebbles. Next thing you know, he's down on his knees pounding on one of the pebbles with a large rock. He holds several yellow nuggets each about the size of a pea You study them frowning Oh to me. It looks like iron pyrite fools gold - that's what I thought too. Look at this one your