Sorry, KO, I don't I know what you mean by "as safe money yields disappear."  There will always be what is called "safe" money yields, whether or not the return is positive or negative.  Otherwise, I think you are correct by implying that the appetite for speculative investments in gold and silver mining will be going up with increasing demand for shares in gold and silver producers. 

I do not think this extends as well to producers and explorers of base metals as these are much less likely to have positive responses to deflationary pressures.