The date is July 6th 2009. 

 The Participants' continuing interests in the Gahcho Kué project will be Mountain Province 49% and De Beers 51%, with Mountain Province's interest no longer subject to the dilution provisions in the 2002 Agreement except for normal dilution provisions which are applicable to both Participants."

This means if Debeers does not go ahead MPV can and Debeers interest will be diluted accordingly putting MPV in the drivers seat. That will not happen.