I guess I am naive, but on top of that I am puzzled. I am an...

I guess I am naive, but on top of that I am puzzled. I am an inexperienced investor that has been buying more and more shares over the years since CDU was AUM. Like others believing that the copper was in the ground, so regardless of delays it would eventually repay my patience. What puzzles me is that the result is so poor - with all the conspiracy theories in the world, I can not see what anyone would have to gain by over estimating and publicly continue to suggest the value was there if the result was the reverse. Now - like others - I am trying to decide whether the time to sell is now to avoid a further drop, or to wait. Surely there is more to it than this - is the result an underestimate of the true value? There is no reason to fool minor (or major) investors when you will be found out so easily - so is there an upside - or am I naive?