Shares in small nickel and cobalt explorer GME Resources also jumped as much as 53%, apparently driven by the similarity of its stock ticker code to the US videogame retailer.
The company has named a new chief operating officer and a chief executive for its Australia business, as the miner works to rebuild partnerships with Indigenous groups.
Smelter benchmark at decade lows after what was supposed to be a year of mined supply growth turned out to be the second consecutive year of zero growth.