The optimization work includes "resource modeling" and a review of the " size and location" of a number of site facilities. Any significant changes to these areas would require an update to the feasibility study before filing an EA. An example can be found here where YMI carried out optimization work, updated the FS and then filed an EA in BC. http://www.yellowheadmining.com/s/NewsReleases.asp?ReportID=669601&_Type=News-Releases&_Title=Updated-Positive-Feasibility-Study-for-the-Harper-Creek-Project-2014-Second...

It also provides a good example of how little metal in the ground is valued when there is no clear path to production. The JV agreement specifies that any production decision be based on an approved FS. The FS prepared by Copper Fox does not appear to be "approved" as far as Teck views it since they did not indicate acceptance of a positive FS within the time limit in the Salazar agreement and haven't booked any reserves from SC for either copper or gold. So I'm looking to see if the JV announces a plan to update the FS which would be carried out next year at Teck's expense and separate from the annual work plan. We need some indication that the development of SC is going forward under Teck. Our current share price reflects that uncertainty.