Definiciones
1.NounThe surface of coal exposed by mining, or a part of a coal seam that is currently being mined.
2.NounThe end of a drift, entry, or room in a coal mine.
3.NounA place where difficult or strenuous work is done.
4.NounA place where more tangible, practical, or direct work of an activity is done, as opposed to theoretical or managerial work.