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Runways are made of concrete as far as I can tell, and since there is an oligopoly on cement throughout most of the world I think you can guess why (expensive).
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[–] 8424133? 0 points 2 points 2 points (+2|-0) ago
Runways are made of concrete as far as I can tell, and since there is an oligopoly on cement throughout most of the world I think you can guess why (expensive).