<P> The chimney ( smokestack or stack in American and Canadian English ) is the part of a steam locomotive through which smoke leaves the boiler . Steam locomotive exhaust systems typically vent cylinder exhaust through the chimney to enhance draught through the boiler . Chimneys are designed to carry exhaust steam and smoke clear of the driver 's line of sight while remaining short enough to clear overhead structures . Some chimneys included features to avoid dispersing sparks . </P>
<P> The chimney ( smokestack or stack in American and Canadian English ) is the part of a steam locomotive through which smoke leaves the boiler . Steam locomotive exhaust systems typically vent cylinder exhaust through the chimney to enhance draught through the boiler . Chimneys are designed to carry exhaust steam and smoke clear of the driver 's line of sight while remaining short enough to clear overhead structures . Some chimneys included features to avoid dispersing sparks . </P>
what comes out of a steam train funnel
what comes out of a steam train funnel
smoke
smoke