"Get in!" They entered the little building.

The office contained the engineering staff and several others.

Tobacco smoke lay thick in the room.
Outside, the faint whining sound was growing steadily in volume until at last it deepened into a roar very like that of an approaching express train, as Pat had suggested.

Followed a smart blow on the shack.

Then it reeled and the night was filled with a howling tumult that deafened the men inside; the blizzard had burst upon the mesa.
Through the windows one could see nothing, for the air had become a black maelstrom of whirling snow and darkness where a choked roar persisted as steadily as the bass thunder of Niagara.