Brian Dumbrill used slur towards colleague at Hexcel Composite, tribunal heard
Offensive term usually used to insult white youths who adopt black youth culture
His colleague Kevin Angus, who has a black wife, reported incident to his bosses
Mr Dumbrill, who worked at firm s Duxford site in Cambs, was fired from his job
Now an employment judge has dismissed Mr Dumbrill s claim of unfair
dismissal