Answer: refiners

AnswerCrossword Clue
REFINERSOil companies
REFINERSOil or sugar men.
REFINERSProcessors of oil.
REFINERSSome oil companies
REFINERSEmployees in the sugar industry
refinersto teach good manners, taste, etc.
refinersto free from impurities or error
refinersREFINER, one that refines (to free from impurities)