Ann: UPDATED TRANSIT RECEIVES STATE APPROVAL FOR , page-11

re: Ann: UPDATED TRANSIT RECEIVES STATE APPRO... I seem to be missing something!

"The Exploration Target assumes a grade-thickness cutoff of 32% KCl-m, below which mineralization is excluded from the estimate."

But:
" Potash Beds 13 and 18 of 2.5 to 3.8 billion tonnes of sylvinite ore at an average grade of 19% to 29% KCl has been delineated within the Project."

Anyone know what "KCL-m" means? I assume 19-29% KCL is above the cutoff of 32% KCL-m.