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In 1786 a tunnel was built at Coalport, in the Ironbridge Gorge, Shropshire, England. During construction a spring of natural bitumen was discovered which was subsequently tapped and the tar sold for medicinal purposes or boiled into pitch.
October 8th, 2012
Viewed 36 Times - Last Visitor from Telford, Telford and Wrekin - United Kingdom on 08/14/2014 at 4:08 AM
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