Here the wealth of the land lies below the surface in rich coal seams and the mining villages have grown into busy towns around iron and steel foundries, chemical works and oil refineries.

• 这里，土地的财富埋藏在富有煤层的地表以下，而且采矿的村庄已发展成为繁忙的城镇，内有钢铁业、化工业和炼油业。