text: According to the OSM wiki, the current tagging should be ok.
  
  "A chimney is a structure which provides ventilation of hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere. [...] Please only map huge industrial chimneys (for example of factories), not normal chimneys of houses - approximate height at least 10 meters."
  https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dchimney
  
  I couldn't find a tag that would match better: "man_made=tower" might be fine as well, but would be quite generic, wouldn't it? I added "historic=yes" at least for now. Please re-open, if you'd prefer a different solution.