Over the many of my years i have watched these trend lines in the minerals groupings. Each of the many facets actually, production prices, volumes of production volums, price gaps and a lot of the indicator facets of telling the story around mineral ore/ores etc from Ag to Zr. One note from a memo from JB&BOD about economice was the mention of increasing prodiction of concrete, that when concrete volume spikes to look for minerals/metals particularly to follow the spike trend which seems to indicate higher levels following the increase of concrete production. (makes sence to me)

You lkely know very well about the cycles, deep valleys then acending peak, levels and then anon. About as long as charting has been has been the history of minerals. Ups and down cyclings. The one very good thing IMO is that being in our most recent full down since the 2000 market crash thru 2001 we are equal in the trending for a return back up the hillside for a trend that could continue to follow the histrionic LINEs of mineral trendings ete/al. Easy from your Yahoo info. On that line if NOW is the time to accend then a good ride should ensue for possibly beyond a decade, whoever gets cycled into the rise and i do mean the Majors and so many Juniors that just happen to slice out a good Wave for themselves. This could be the background to support heavy investments coming into the Minerals arena. That being bottom of the Wave and a long Historic ride to the High Plateaus.

http://www.freedoniagroup.com/World-Cement.html