collapse of jr NA cobalt miners stunning

I am curious as to why Junior North American Cobalt miners stock prices have basically collapsed. Many are trading at 52 week lows. It's just not First Cobalt but a large number. You would think with issues in the Congo and China's cornering of 65% of the world's cobalt production that North American miners would be a sought after investment. Is it worth while staying the course and hope for a stellar recovery? I am hoping to see stock price improvements by fall. These current prices make no sense. We should be seeing Strong Capital inflows into this mining space.