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crushed rocks, and blast furnace slag) in a steam heated mixer, at 212 F, and through a heated reservoir, conduits, and meshes, create a machine and material that can be applied to form a road surface. He filed a UK patent, in 1902, for his improvement. Hooley founding a UK company to market the technology, where the term tar macadam, shortened to tarmac, was coined, after the name of his company Tar Macadam (Purnell Hooley's Patent) Syndicate Limited,

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