Mining Companies Getting Top Heavy?

It may be time to pair back on mining companies:

"The chief executives of the world’s three largest mining companies have decided to bow out this year, prompting speculation that they are quitting before the commodities bubble bursts."

The charts of BHP, RTP and AAUK do look top heavy. A break of the 200 day moving averages, along with weak technicals, might signal a good short entry.