Frank K.Crundwell, Michael S.Moats, Venkoba Ramachandran, Timothy G. Robinson, William G. Davenport. Extractive Metallurgy of Nickel, Cobalt and Platinum-Group Metals. Elsevier. 2011.

“So much useful information packed into a book. If you're looking for a book on the extractive metallurgy of nickel, cobalt or platinum group metals, this is the book for you. So much useful information packed into a book” http://amzn.to/1QPX7JP