I posted a few charts of seasonality for miners previously and below is a link to some more plus other shares, and also one for the Gold Bugs index. Sell at the beginning of June and Buy at the end of July?

Here is a link to more charts: http://charts.equityclock.com/metals-mining-industry-seasonal-chart

And more details on the one for gold bugs index up to 2010.  http://charts.equityclock.com/amex-gold-bugs-index-hui-seasonal-chart-2