Six workers died and another five were injured, one of them seriously, following a methane gas leak on Monday afternoon at the Hullera Vasco-Leonesa coal mine in Llombera de Gordón, León.
Six workers died and another five were injured, one of them seriously, following a methane gas leak on Monday afternoon at the Hullera Vasco-Leonesa coal mine in Llombera de Gordón, León.