This is what I mean Salpetie: thicker cover if you drill from NE to SW, but less likelihood of drilling problems in a fault zone (though of course my 'drillholes' are purely schematic, and would in fact be collared far closer to the Tetris anomaly, from within the Antipa tenement that contains it).
Whilst we are at it though, I wonder where the depth-to-basement contours came from on that image. They must have been significantly revised using subsequent drillhole data (possibly from Havieron area), as they actually show a cover depth of 1,000m above the Tetris magnetic anomaly.
One would hope / expect the 450m depth of cover in the last announcement is based on more recent drilling data and higher resolution ground geophysical modelling.
Once can but wait. And get on with something more useful..
(20min delay)