RE:RE:RE:TV's SPI'm not sure I fully agree with your assessment. In 2016, the story was absolutely that there would be a shortage of zinc. Inventory levels had been falling ever since their highs in 2013, and the story was all about the coming inventory crunch.
However, at the same time, there was already plenty of news about how new mines would be coming online around 2020 to make up for that shortfall.
The story had always been this, and it in fact materialized as reality in early 2016. Things would have likely continued from there had the trade wars not put the stops on it.
Depending on how the Democrats play things out, 2021 could absolutely return us back into the golden days - tariffs being lifted should send metal prices soaring.
All this being said - I still don't plan on buying any shares in this company any time soon. I still have no faith in Trevali management, and continue to believe that they are surviving in spite of their efforts, and not because of them.