Ann: Bankable Feasibility Study Update, page-42

I haven't done any sensitivity analysis on the resource risk CuB. I'm really just trying to get a feel for what Echo will deliver in their BFS. Whether they actually deliver in production what they say is another question! I'm not sure it would be possible or useful (based on public information) to model how much costs would go up if grade undershot by 20% say.

I've tried to be relatively conservative in using costs higher and production lower than what was previously announced.