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John Loudon McAdam

John Loudon McAdam

John Loudon McAdam was born on September 21st, 1756, the son of a landed proprietor, James McAdam who was one of the founders of the Bank of Ayr, and the niece of the 7th Earl of Dundonald, Susanna Cochrane, in Lady Cathcart's House, which still stands on the Sandgate in the town of Ayr. Famous as an engineer and road-builder, he both invented and pioneered a new and improved method for constructing roads which were smooth, hard-wearing and less likely to become muddy tracks than the existing roads of his day. This new process became known as "macadamisation" and was used throughout the world. Although he did not use tar in the manufacture of his own roads, the modern road surface has became known as 'tarmac' or to give it its full title 'tarmacadam'.

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