The stope was deeper now than on the first day, but not enough to make up for the vast amount of ore which had been taken out of the mine in the meanwhile.

On the floor were tons of the metal, ready for tramming.

Harry looked at them, then at the stope again.
"It ain't coming from 'ere!" he announced.

"It's--" then his voice dropped to a whisper--"what's that ?" Again a rumbling had come from the distance, as of an ore car traveling over the tram tracks.

Harry extinguished his light, and drawing Anita and Fairchild far to the end of the stope, flattened them and himself on the ground.