"I hope we won't have any trouble while we are working here," said Bob thoughtfully.

"So do I. It is a hazardous calling that you and I have chosen, old man. Between cave-ins, dynamite explosions, falling cages and other troubles we shall have to keep our eyes open."

"Yes, and we have got a bad lot of men about us," added Jarvis.

"The foreigners, you mean?"

Bob nodded.

"Yes, they are a choice lot of anarchists," continued Steve. "Many of them have leanings in that direction. Between the Finns, the Huns and the Italians the company has its hands full."

"It is a pity they do not clean out that crowd. These fellows will cause trouble some time."

"That is what I think. And, between you and me, Bob, something is going on in these mines."

"What do you mean?"

"Something is doing——"