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Compass Minerals operates the UK's biggest rock salt mine and is Britain's largest supplier of natural rock salt, which is used by winter maintenance professionals to thaw icy roads in wintry weather.

Rock salt from Compass Minerals plays a major role in protecting life and keeping Britain's roads open in icy weather. A worldwide leader in the production and distribution of inorganic minerals and a business with a long history in salt mining, Compass Minerals is based at the Winsford Rock Salt Mine, in Cheshire. The company produces salt year round, building stock levels through the spring, summer and autumn, for use by governments and local authorities during the winter months.

The company works in partnership with local authorities and private contractors across Britain, to find practical solutions for the local supply, safe storage and spreading of rock salt.

In addition to supplying rock salt, Compass Minerals has a number of other associated products and services that have been developed following many years of research and following close consultation with customers. 

You can find more about these in our Salt Products & Services section.