Tomorrow's Engineers on X: "You probably use his tar macadam invention (tarmac) every day. Scots engineer John Loudon McAdam born #onthisday in 1756 https://t.co/u4LRGioRqL" / X
File:Lauterbach 2 Potholes across merging Water Bound Macadam Forest Road Mar b.png - Wikimedia Commons
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Talk:Key:surface - OpenStreetMap Wiki
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File:Macadam Building, King's College London.jpg - Wikipedia
File:Macadam.jpg - Wikipedia
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Macadam - Wikipedia
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John Loudon McAdam - Wikipedia
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