very large previously unmapped structures

In the ann from 24.07.07 it says:

"The surveys consist of the onshore West Anketell Aeromagnetic Geophysical Survey of 8,000
line kilometres in EP 448 and the West La Grange Aeromagnetic Geophysical Survey of 3,000
line kilometres in EP 438."

In todays 'Cracking the Canning' ann:

"In addition to the drilling results, ARC has acquired over 850 kilometers of new
seismic data since its exploration program commenced. The new data has revealed
very large, previously unmapped structures in areas with proven oil and gas potential,
confirming the very underexplored nature of the Basin."

I can't find where this 850 K seismic was done.
Does it relate to the 11,000 K in EP 438 and 448 or somewhere else?
Does anybody know?