Brazilian metals and mining company Vale SA (<a href="https://www.b3.com.br/en_us/market-data-and-indices/data-services/market-data/quotes/?tvwidgetsymbol=BMFBOVESPA%3AVALE3" target="_blank">BVMF:VALE3</a>) will be working with Swedish firm GreenIron H2 AB in an attempt to decarbonise the mining and metals supply chain.