New discoveries correlate with Watchorn Exploration Targeting using Yilgarn Seismic Tomography from 300 km depth. 22 April 2021 by Robert Watchorn Exploration targeting using Yilgarn Seismic Tomography from 300 km depth. Analysis of where the new discoveries in the SW Yilgarn Craton correlate with Watchorn targeting from 3 years ago. Like it? Share it!