Descending the second slope into the lowest level of the mine, Tom Evert and his party made an examination of the place in which they were to work. The new excavations on this level were of limited extent, work having only recently been begun on them; but a powerful pump had been placed at the top of the slope leading down into them, and it was to bring the accumulated water in the old workings within reach of it that the mine boss had sent them down.
Going up the old gangway, past the chamber at the foot of the air-shaft which Derrick had such good reason to remember, they soon came to the fallen mass of rock, coal, and earth through which they were to cut a channel and insert a pipe for the release of the water beyond. The material was too loose for blasting, so the work had to be done with pick and shovel, and the debris removed with wheel-barrows, and distributed along the gangway. It was hard, dangerous, and exhausting work, and at the end of three days Derrick was heartily tired of it.
Still the rain poured steadily down, and people in the upper world began to talk of danger from floods, and great damage to the ungathered crops. Even in the mine the effect of the heavy rain began to be noticed. The drippings from the roof fell thicker and faster, the tricklings down the walls became little rivulets, and the black streams in the ditches swirled along angrily. The great pumps worked steadily, night and day, at their fullest speed, and from the mouths of the waste-pipes young rivers of black water were poured; but the mine grew constantly wetter and more uncomfortable.
Finally the mine boss decided that it was almost time to temporarily abandon the lower workings, and allow them to fill up, so that the whole force of both pumps might be directed towards keeping the upper level free of water. He spoke to Tom Evert of this, and the latter begged for just one day more, as he thought he had nearly cut through to the water, and was anxious to get the pipe laid, and have that job off his hands.
"Very well," said Mr. Jones, "you may have one day, Tom, and no more until after the rain stops; for without both pumps in the upper level we shall, very soon, have to shut down altogether."
During the morning of that fourth day they uncovered a wall of rock, which barred their way completely, and Tom Evert decided that at least one blast would be necessary to force an opening through it. After lunch-time he left the other miner, with the two helpers, to drill a hole in it, while he went up into the village to procure some powder and fuse for the work.
Those left below had not been long at work when Derrick noticed a little stream of water spurting out at one side of the rock. He called the attention of the miner to it, and he, without a word, sprang to the place and tried to check the stream, first with earth, and then with strips torn from his shirt, but could not. As he stopped its flow at one point, it burst out at another.
Finally he exclaimed, "It's no use, boys! we'll never be able to draw this water off through any pipe; it's going to take that business into its own hands, and the best thing we can do is to get out of here quick as we know how."
Even as he spoke there came a rattling rush of earth and loose rock, followed by the roar of angry waters, as they leaped out of the blackness like a savage animal upon its prey. The long pent-up waters, swollen by the heavy rains and scorning any effort to draw them off gradually, had burst forth in all their fury, and in less time than it takes to write of it, the old gangway was filled with the surging torrent.
At the first outbreak Derrick and his companions started to run for their lives down the gangway, but as they reached the door of the Mollies' meeting-room the torrent was upon them. They had barely time to spring inside the door and close it as the mad waters swept past. The door offered but a momentary protection, but ere it had been crushed in they were climbing the old air-shaft towards the upper level. It was a desperate undertaking, for the few timber braces left by those who had cut the shaft were so far apart that often they had to dig little holes for their hands and feet in the coal of the sides, and thus work their way slowly and painfully upward. It was their only chance, and they knew it, for they could hear the detached bits of falling coal and rock splash into the water as it rose in the shaft behind them.