My Lords, in memory of Mansel Aylward, who, as a medical student, was the person who crawled into the school only to discover that the children were all dead, as was the teacher, what research is being undertaken now to look at more effective ways of monitoring the coal tips? With the change in climate, we have ever-increasing rainstorms and the water flow, which was partly responsible, is creating a greater, not lesser, danger in those valleys, where the memory of what happened in Aberfan remains as sharp today as it ever was.