Ann: Trading Halt, page-24

We will never know what went down leading up to the blood letting of the TD and resignation of the MD . I don't think we should assume too much too early.

I do not know , but it is not unreasonable to suspect that there has been "slippage" in the construction schedule which will increase cost. The project management iron triangle of scope , cost and schedule persists. You cannot change one without affecting another while maintaining quality .
There have been a number of factors , imo that could have come into play being weather , departure of TD and MD and hence (possibly) inadequate project controls and monitoring of progress , etc.

The only other scenario really (given the wording of the Trading Halt) is that the schedule has been able to be reduced due to some risk / reward scenario that has gone our way which would reduce the cost. Theoretically , given the announcement of only a few weeks ago that everything is ahead of budget , schedule , etc., one would think that this is the case.

Either that or they now have a new MD who has reviewed the scope , schedule and cost and come up with a different answer given that the scope and quality do not change ?

My opinion only , dyor.