Ann: Achievement of Major Milestone for Project Kachi, page-185

Video of Kachi site development with a date stamp at the top & highlighting of new areas in yellow, fading to white lines. Gives a good indication as to when there were site activities - towards the end you can see the development zone shift South late last year, earlier this year.
Argentina has a long list of companies vying to produce lithium from brine - albeit some of the larger holdings appear to be private. Lake's combined interests are up there in terms of location & hectares for a publicly listed company.
With Kachi & this announcement, they are further advanced when you look at the stage many of their peers are at.