Coal face is an metaphor :) It means that labour in this discipline will produce many new products and results https://en.wiktionary.org/wiki/at_the_coal_face

Coal face is an metaphor :) It means that labour in this discipline will produce many new products and results https://en.wiktionary.org/wiki/at_the_coal_face https://en.wiktionary.org/wiki/at_the_coal_face