re: apg signs deal with worlds largest nickel prod Seik, If you want to do the calcs from the supply side a 700000 tonne acid plant will cost A $70 m approx if it is at 30 percent concentrate and then another A$70 m to make the hydrogen plant to make the acid. APG have never said they are into hydrogen plants so the benefit to them should be say a 3 percent royalty,ie $2,100,000 per annum