"As you wish," said Carnally. "I had figured on our sleeping and getting breakfast in the shack."

"Heavens, no!"

Andrew lighted his pipe.

"I've recovered enough to feel curious. How did the accident happen? The men who use it must know that the fumes of giant-powder are dangerous; why didn't they wait?"

"It might be better if I let the man responsible explain."

Carnally beckoned the foreman.

"Mr. Allinson wants to know why you didn't keep the boys back until the fumes had cleared."

"I gave them about the usual time; but it looks as if I'd cut it too fine. Guess the damp and there being no wind stopped the gas from getting away. Besides, we're not using a high-grade powder."

"But if there was any doubt, couldn't you have given them another few minutes?" Andrew asked.

The foreman smiled.