Coal and LimeTrivia brain teasers have some element of trivia in them, but they are not just pure trivia questions.
In some European countries, if coal is transported in open railway trucks the top is sprayed with a solution of lime. Why?
AnswerThe lime solution covers the coal with a white film. If coal is stolen after loading, it is evident that the theft was committed in route and is easily discovered as the train passes by stations on its way to its destination.Hide What Next?
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