Twenty-five mile salt mine at Kilroot
Carrick’s salt mines were found to stretch for 25 miles, according to a report in the East Antrim Times in 1968.
Principal geologist PI Manning from a geological survey which was being carried out across Northern Ireland, reported the findings to a meeting of Carrickfergus Professional Women’s Club.
The survey team was employed by the Ministry of Commerce.
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Hide AdMr Manning said, that as a result of this survey, several industries had decided to locate in Ulster.
The salt mine opened in 1965. It is part of a salt bed stretching to Russia.
It was formed during the Triassic Period 220 million years ago.