SK were never going to fund the entire mine. The strength of...

SK were never going to fund the entire mine. The strength of their commitment to purchase product combined with an equity stake to provide a guarantor effect is what they are about. The equity stake being the “deposit” on the car which would have been handed over to AUZ to secure finance so they can get the build underway. 
It would have been nice for them to fund but that’s not the real world. They take advantage of a country’s regulatory framework wherever they invest. Research their Hungary investment methodology and note the kind of govt incentives they were granted, same with Georgia where the local government bent over backwards with incentives in the hundreds of millions.