1905: Edgar Purnell Hooley patented Tarmac in 1902. The story goes that Hooley, a county surveyor, came upon a hard-wearing and dust-free stretch of road. Tar had been spilled on the surface and slag from a nearby ironworks used to cover it. Hooley set up a company to exploit his discovery – The Tar Macadam (Purnell Hooley’s Patent) Syndicate Ltd., which in 1905 was renamed Tarmac Ltd.
Source: J.B.F. Earle, A Century of Road Materials: The History of the Roadstone Division of Tarmac Ltd (1971), pp. 16–17