Where does gritters’ salt come from? The secret behind what’s spread on our frozen roads

The UK’s grit has a surprising origin - (PA)

Snow and ice have brought disruption across the country as Britons get their first taste of winter – with more forecast for the weekend,

Any driver will be familiar with the grit that sees off pesky ice at this time of year. This salty substance prevents slippery roads by melting frost and making it easier for cars to move safely.