Evidence based speculation, page-15

The thing is it's all doable viz pyro whatology -if the example of laterite is applicable
see how quickly AUZ set up a pilot plant in WA to produce Ni, & Co sulphate- the technology is available and has improved from the early days ,and there is expertize. The plant can be built to the required size.The key components are the autoclaves which operate by batching.They are built to order and don't come cheap, but once the process line is working , more can be added.