Polysulphate
We are the world’s first and only producer of Polysulphate In a world where populations are continually rising and the demand for food is ever-increasing, it’s essential to farm as efficiently and sustainably as possible. This is where Polysulphate comes into play.
Introducing Polysulphate
Polyhalite was formed approximately 260 million years ago during the Permian era, when Europe was located much further south. At that time, Boulby was positioned at the edge of a vast, shallow ocean known as the Zechstein Sea. The hot and arid conditions of the era caused the water to evaporate faster than it could be replenished, resulting in the deposition of polyhalite and halite minerals that we now extract.
Boulby Mine's
Remarkable Journey
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What is Polysulphate?
Polysulphate is a unique fertiliser which is mined from deep underground only here at Boulby Mine and nowhere else in the world. This mineral (Polyhalite) is located more than 1,200 meters beneath the Earth’s surface, specifically under the North Sea along the North-Eastern coast of England.
The natural mineral is almost entirely composed of four of the essential major nutrients used as fertilisers: potassium, magnesium, calcium, and sulphur. Not only does this rare mineral provide four major nutrients, but it also releases these into the soil over several weeks, matching the growing period of the plants so that they have a continuing supply of nutrients.
What’s the difference between
Polysulphate & ‘normal’ fertiliser?
The lowest carbon footprint fertiliser
As well as minimal processing requirements, Boulby’s access to billions of tonnes of Polysulphate ore are accessed via the existing shafts from the previous potash mine, repurposed to mine the Polysulphate. Relatively little new energy has been required to create this unique Polysulphate mine and the production process uses increasing proportions of non-fossil generated electricity and effectively no fossil fuel.
The lowest carbon footprint fertiliser
As well as minimal processing requirements, Boulby’s access to billions of tonnes of Polysulphate ore are accessed via the existing shafts from the previous potash mine, repurposed to mine the Polysulphate. Relatively little new energy has been required to create this unique Polysulphate mine and the production process uses increasing proportions of non-fossil generated electricity and effectively no fossil fuel.
The lowest carbon footprint fertiliser
As well as minimal processing requirements, Boulby’s access to billions of tonnes of Polysulphate ore are accessed via the existing shafts from the previous potash mine, repurposed to mine the Polysulphate. Relatively little new energy has been required to create this unique Polysulphate mine and the production process uses increasing proportions of non-fossil generated electricity and effectively no fossil fuel.