Trading in the overall market was relatively normal yesterday; your average worry about the fiscal cliff and Europe snuck their way in, but there was nothing out of the ordinary. That is, until you looked at Freeport-McMoRan’s (FCX) stock for the day. This major copper and gold producer was absolutely slaughtered, as investors participated in one of the nastiest sell-offs we have seen in recent weeks. But the  massive drop had nothing to do with the commodities they produce, but rather a questionable business move that left many scratching their heads [for more copper and gold news subscribe to our free newsletter].