No - pretty sure plant with additional capacity was installed at extra cost to the original BFS during the initial construction phase, with the specific aim of reducing the cost of expanding capacity to 16mtpa. Check announcements in archives. Whilst I haven't been happy with the lack of progress on this project - I did think this was the smarter thing to do.
GBG Price at posting:
3.5¢ Sentiment: Hold Disclosure: Held