The polyhalite-based Poly4 product that Anglo American will market if its bid for Sirius Minerals is successful emits significantly less carbon dioxide (CO2) per tonne relative to both of the other two main fertiliser products.. Poly4 emits 93% less CO2 than the more elaborate processing of sulphur of potash (SOP) and 85% less CO2 than the high-volume muriate of potash (MOP), Anglo American CEO Mark Cutifani said on Monday when he announced that the board of Sirius Minerals is supporting Anglo’s cash offer of $525-million for all of its shares.
