I read on a few other company threads that the grade had fallen...

I read on a few other company threads that the grade had fallen to 100 ppm as the brine was being diluted with the Lithium resource grade depleting ,I never checked this tho.
I do know that the grade was 300 ppm in 1988 with a feed grade of 6000 ppm to the plant.
The feed grade from the Paradox basin brines of a starting point of only 100 ppm ,using the IX process rather than ponds its a more like 10,000 ppm to 15,000 ppm.
But I guess another posters 30 year old info is more accurate than our own research.