Digging a Hole to HeavenAt 12 years old, Conall has already worked in the coal mines of West Virginia for two years. He spends his days deep underground with his faithful mule, Angel, carting loads of coal back and forth between the coal seams and the main shaft, where elevators take the coal up to the surface. One day, a tunnel collapses, and his brother is trapped with others on the wrong side! How can Conall and Angel help to save them? Mixing archival images with his