you can see from Nevsun's Bisha history that a similar scenario is being played out with STB. In fact the final buy in price was still not finalised until 6 months into commercial production. So people who think that the current situation is going to slow things up are dead wrong.
January 2010: construction...
http://www.nevsun.com/news/2010/january21/
February 2011: commercial production...
http://www.nevsun.com/news/2011/february22/
June 2011: still negotiating final buy in price
http://www.nevsun.com/news/2011/june30/
Aug 2011: finalisation of deal with ENAMCO
http://www.nevsun.com/news/2011/august23/
note how the structure of the deal changed over time and wasn't concluded until 6 months into production...also the buy in was negotiated to come from after tax cash flows.
STB Price at posting:
44.0¢ Sentiment: LT Buy Disclosure: Held