If the goalposts keep moving e.g. drilling finds more and more, waste pit turn out to have good minerals, latest technology finds more interesting areas worth exploring (MIRA etc.) how can you not move deadlines if the cost benefit outweighs upsetting a few retail investors when your main investor (EE) continues to bankroll further exploration and proving up the the benefit of all who hold on for the long term after doing their own personal DD and deciding on their own personal risk level. It is a Venture stock after all.
I like to think that our heads are not in the sand, more like in a lovely combination of abundant copper, moly, gold and silver, with a wee bit of rhenium etc thrown in for sprinking on the top of a delicious cake of moolah.
All IMHO of course.
Max