It's based on the statement in the June 17 press release " The Company's focus in the next quarter; working with our partners to implement the optimization and explorations activities outlined to date on three of its four copper projects" and the fact that the optimization work commenced in March 2014. By the end of September 2015 that's 18 months. Teck said it would take 12- 18 months to due a PreFS on Relincho so it's reasonable to expect the optimization to be done this year. There should be a quarterly JV meeting coming up in October(the last one was mid July) and it would be nice to hear something definite instead of "optimization work is ongoing". Yes there's some wishful thinking on my part but really it's time to stop cutting bait and start fishing at SC.