You raise a good point Precipitate. Currently I included all the...

You raise a good point Precipitate. Currently I included all the costs of the chemical recovery of V, Ti, Fe, Mg and Al under the heading "acid leach". As I have only costs for V based on operations elswhere, the costs for the recovery of the other commodities is an inspired guess. Whislt there will be some common costs such as the initial acid leach there will be commodity specific costs as part of the refining process. So you are right Precipitate, in order to do a balanced "what if" comparision, the spread sheet would benefit by a section on refining costs (for want of a better term) for each commodity. Thank you for your contribution.