Every fellow Idiot Waver has been watching BHP Billiton $BHP for many weeks now, waiting for a good spot to get short. Those who got short on the reversal in early October were shaken out by the post-election surge, but that set up an even better entry: short below $37.40 (protective stop at $40.xx). This is a weekly chart, a very long-term set-up, if it works out it will take *months* to do so, not a "day trade."
What's important about the whole play is how it shapes your thinking towards industrial metals, Australia, China, Brazil, currencies, The Donald playing a completely unsuitable (and potentially catastrophic) role, etc. You don't need to take the trade, just keep it in the back of your mind.