But where does it come from? We go underground in Cheshire to see Britain’s biggest salt mine – and the vast space left behind. With the recent wintry weather, Highways Agency and council ...

Cheshire's salt mines date back to the Triassic geological period, some 220 million years ago, when the county's weather was very different to what it is today. The importance of salt to Cheshire ...

From here, beneath the ground in Winsford, Cheshire... De-icing or gritting salt is nothing like the white grains we use to season food. Made from crushed rock salt carved out of underground mines, it ...