Salt production has been increased at a mine in the North East in a bid to stop national supplies running out.
The Cleveland Potash mine will almost double its output to produce a total of 30,000 tonnes following a request from the Department of Transport.
The appeal to provide an extra 14,000 tonnes was made on behalf of the Salt Cell - which has managed the national reserves throughout the icy winter.
The new salt total would be enough to grit 150,000 miles of road. Potash is mined to make fertiliser and rock salt is a by-product of the operation.
Mine managing director Graham Clarke said: "We have been responding to the demand for salt supplies throughout the winter - in fact since the start of December to today our salt output has increased by 22% compared to the same period last winter."
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