"Hold on, whoever you are, or I'll shoot!"
"Quick! There's the shaft!" exclaimed Dick, pointing to where the big bucket rested at the bottom of the opening.
The boys made a rush for it. At the same instant a shot rang out in the darkness, the flash from the revolver lighting up the mine cavern with sudden glare. They could hear the bullet strike far above their heads with a vicious "ping!" Clearly, Smith was only firing to scare them, and did not want to run any chances of hurting them, as he had aimed high.
Then a strange thing happened. The cable, attached to the bucket, began to wind upward. There was considerable slack to it and the bucket did not immediately follow. It was evident that the machinery at the shaft mouth had started and that the ore-carrier was about to be hoisted up. An inspiration came to Dick.
"Into the bucket!" he called. It's big enough to hold us all and we'll be hauled to the top! We can escape that way!"
Tim and Frank needed no further urging. They clambered over the iron sides of the bucket, followed by Dick. And not a second too soon, for, as he set his feet on the iron bottom, the cable tauted and the bucket started upward.
"Come back here!" yelled Smith, reaching the bottom of the shaft just in time to see the conveyor disappearing. He made an ineffectual grab for it, but, as his torch flared up when he threw
