I saw that too lol. Looks like it was a transcription error by whomever copied this from its original source. It originally said "forty cents": http://moses.law

I saw that too lol. Looks like it was a transcription error by whomever copied this from its original source. It originally said "forty cents": http://moses.law.umn.edu/darrow/documents/Children%20Coal%20mining.pdf http://moses.law.umn.edu/darrow/documents/Children%20Coal%20...