I think EMP have a brine depletion problem also and as you saw in their PEA that opex goes up over $4k were as ASN will not have any depletion issues ...
Plus ASN phase 2 will expand to 30ktpa and begin Bromine production plus boron all things going to plan over at East PARADOX... and ASN do have Iodine, which was around $70k per tonne the last time I looked.
Btw all the extra mineral credits have been extracted successfully in the past.
(Information on that can be found in Anson's PEA )....
