Well, they were saying this about nickel prices about a year ago...

Well, they were saying this about nickel prices about a year ago when it was $16000/ton. That the nickel prices were not sustainable.

Look at where it is today : $34000/ton.

Today's nickel prices are due to supply shortage. The same problem facing zince.

Predicting the top of a cycle is very difficult and cycles have a tendency to run much further than expected.

Are things looking shakey in China and India - not from what I can see. Global economies still looking good.

Short term spot price fluctuations are easily manipulated by hedge funds etc. But its better to look at the overall big picture to see where things are going.