At that date children began to work in mines at the age of four or five, and large numbers of girls and boys were labouring in the pits by the time they were eight. For twelve or fourteen hours a day these poor little toilers had to sit in the mines, opening and shutting trap doors as the coal was pushed along in barrows. All alone, with no one to speak to, sitting in a damp, stifling atmosphere, the poor children had to stay day after day; and if they went to sleep they got well beaten. Rats and mice were their only companions, and Sunday was the only day on which they were gladdened by the daylight.