It's on various presentations as far back as October '08. Maybe the new geological model that management has figured out has made the 6 level and the 334 vein significant as the 334 shear zone shows up on one of the Hinge axis in this presentation

page 13

http://sangoldcorp.com/assets/files/SGR102708.pdf

cross reference on the current presentation, page 5

http://www.sangoldcorp.com/assets/files/San%20Gold%20April%2024%202010_website.pdf

also the Fact Sheet has been taken off the website