Have seen this, but the environmental implications (energy usage...

Have seen this, but the environmental implications (energy usage and toxic waste) to do this seems to be unfavourable in a world that wants to see greener, cleaner mining.
Responsible investment practices might mean that superannuation investment money isn't invested in companies like these, and instead diverted to sulphide miners like ourselves who don't need to use incredible amounts of energy and create insane toxic waste.

^{"Initiatives by Tsingshan, the world’s largest nickel producer, highlight some of these environmental challenges. For example, Tsingshan is spearheading one of Indonesia’s five hydrometallurgy projects through PT Huayue, a joint venture that is using high-pressure acid leaching (HPAL) to produce Class 1 nickel from laterite resources, which are generally used for Class 2 nickel production. Even if in the long-term HPAL in Indonesia can be decarbonized, the process produces “toxic waste that is difficult to manage” and poses environmental risks, like many traditional metal smelters in Indonesia.Similarly, Tsingshan has also converted Class 2 nickel pig iron (NPI), which is mainly used to produce stainless steel, into nickel matte, a higher-grade form of the material. This process has raised even greater concerns given that matte production from NPI results in nearly three times as many greenhouse gas emissions per unit of nickel as HPAL processing."}