A Coalface

1. (mining) The surface of coal exposed by mining, or a part of a coal seam that is currently being mined.
2. (mining) The end of a drift, entry, or room in a coal mine.
3. (figuratively, UK) A place where difficult or strenuous work is done.
4. (figuratively, UK) Where practical work is done, as opposed to theoretical or managerial work.