Explore The Great Smog of London
Coal
Coal is a combustible black or brownish-black sedimentary rock, formed as layers called coal seams.
Coal. 2 connected concepts: Clean Air Act 1956 (related to), Great Smog of London (related to).
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Explore The Great Smog of London
Coal is a combustible black or brownish-black sedimentary rock, formed as layers called coal seams.