“Since the sand is water-soaked above us the compressed air we use to hold back the weight of the water blew an opening right through to the sea bottom. The wooden barricade sealed the opening temporarily while the Gowan stabilizer could be brought up. Those drills are hollow and as soon as they were driven home liquid nitrogen was pumped through them. This fluid has a temperature of 345.5 degrees below zero and it instantly freezes everything around it. The pipe you see there pumped in a slurry of mud and water which froze solid and plugged the opening. We shall keep it frozen while we tunnel past this dangerous area and seal it off with the castiron sections of tunnel wall. All’s well that ends well—and so it has.”

“It has indeed, and for your head ganger as well. How fortunate the boat was nearby.”

Washington looked at the other keenly before answering. “Not chance at all as I am sure you know. I do believe the last letter from the directors drawing my attention to the wasteful expense of maintaining the boat at this station was over your signature?”

“It was, sir, but it appeared there only as the drafter of the letter. I have no responsibility in these matters being just the vehicle of the directors’ wishes. But with your permission I shall give a complete report of what I have seen today and will stress how a man’s life was saved because of your foresight.”

“Just good engineering, Mr. Drigg.”

“Foresight, sir, I insist. Where you put a man’s life ahead of money. I shall say just that and the matter will be laid to rest once and for all.”

Washington seemed slightly embarrassed at the warmth in Drigg’s voice and he quickly sought to change the subject.

“I have kept you waiting too long. It must have been a matter of some importance that has brought you personally all this distance.”

“A communication, if you please.” Drigg unlocked the portfolio and took out the single envelope it contained. Washington raised his eyebrows slightly at the sight of the golden crest, then swiftly broke the seal and read the letter.



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