on potashblog, page-15

donwijeratne,

While the ELM grade is higher, STB will be making the premium product SOP with the the "lower" grade Carnallite and Kainite resources. (Much cheaper than the current energy intensive Manheim process). Being Open pit and being close to Asia can be better than having a higher grade imo.

From today's announcement-

"In addition, the mineral Kieserite (MgSO4 x H2O) occurs in significant
amounts predominantly with the Carnallite mineralisation which is favourable for SOP production. The
production of SOP and other potassium-magnesium products from the extensive Carnallite and Kainite
resources will be important for the long term expansion of the Colluli production base."