mines Thành ngữ, tục ngữ
back to the salt mines
back to work, humorous expression to express going back to unpleasant work Well, lunch is over so let
back to the salt mines|back|mine|mines|salt|salt m
informal Back to the job; back to work; back to work that is as hard or as unpleasant as working in a salt mine would be.

An overworked phrase, used humorously.
The lunch hour is over, boys. Back to the salt mines! "Vacation is over," said Billy. "Back to the salt mines."