Excellent Article 

Thank you for highlighting it.

I particularly liked liked the following and have added it to my "rules of thumb list"

Nickel is likely to be at or near its price base area here however I am not as certain – but I can say that at current prices in AUD terms - each 1% of nickel grade is equivalent to approximately 14 grams per ton of gold to mine. So 2.5% nickel is equivalent to 35 grams per ton which is a very healthy level – any mine close to this nickel content is going to be robust and able to withstand these price levels and yet several have been hammered due to poor sentiment. This is another case in point where I would point out that mining activities and share prices are two different activities.  Share price activity is a derivative of mining and can dislocate for periods of time before snapping back to more realistic share price levels.