Polyhalite volume in the North York Moors '70% higher' than estimate
Sirius Minerals believes there could be 2.2 billion tonnes of high-grade polyhalite waiting to be mined within its core area in the North York Moors.
Sirius Minerals believes there could be 2.2 billion tonnes of high-grade polyhalite waiting to be mined within its core area in the North York Moors.