The world's only producer of

ICL Boulby Mine is an underground mining operation and processing facility located along the North Yorkshire coastline. We are the world’s first and only producer of the multi-nutrient, low-carbon fertiliser, Polysulphate. 

The 260-million-year-old raw mineral deposited by an ancient sea called the Zechstein Sea, polyhalite, is extracted from 1,300 meters beneath the Earth’s surface and distributed worldwide from our Teesdock Terminal.

Since the discovery of polyhalite in 1999, we have been committed to expanding the Polysulphate market through continuous research into its potential. Polysulphate and Rock Salt is mined, refined and distributed through our deep sea terminal at Teesdock.

ICL Boulby is proud to be the largest employer in East Cleveland, committed to supporting our workforce and playing a vital role in the local and regional economy. We actively contribute to the community through financial donations and volunteer efforts with local groups.