held tight. He felt the swerving motion, and suddenly the car moved out of the tunnel into the open night air. He climbed up the side and peered over the edge. There were five cars in the consignment; he was on the last. Travelling almost at Road speed along the auxiliary cutoff. Swiftly they moved along through the night, through the edge of the Pittsburgh steel yards. Outside he fancied he could hear the rattle of machinery in the yards, the shouts of the men at their work. Making steel was a twenty-four hour proposition.

Then they were clear of the first set of yards. The car made another switch, and Krenner's heart beat faster. A white sign along the side said, "Private Property. Keep off. Markson Foundries Line." Soon now they would come to a crunching halt. Men would be there, but his gun was intact. No matter how many men he met, he had to get to Markson.

The car shuddered a little, but the acceleration continued. They were rising high in the air now, above the foundries. He looked down, and could see the mighty furnaces thrusting their slim necks to the sky.

A bolt of fear went through him. How far did the automatic system go? Automatic loading of coal from the fields, automatic switching onto the Rolling Roads. Automatic transfer of cars onto a private line which led the cars to the foundries. Where did the automatic handling stop? Where did the men come into it? Twenty-seven-year-old concepts slid through his mind, of how freight was carried, of how machines were tended, of how steel was made. In a world of rapidly changing technology, twenty-seven years can bring changes, in every walk of life, in every form of production—

Even steel—

A voice from within him screamed, "Get off, Krenner, get off! This is a one way road—" He climbed quickly to the top of the car, to find a place to jump, and turned back, suddenly sick with fear.

The car was going too fast.

The first car had moved with its load to a high point on the elevated road. A thundering crash came to Krenner's ears as its bottom opened to dislodge its contents. Without stopping. Without men. Automatically. From below he could hear a rushing, roaring sound, and the air was suddenly warmer than before—

The next car followed the first. And the next. Krenner scrambled to the top of the car in rising horror as the car ahead moved serenely, jerked suddenly, and jolted loose its load with a crash of coal against steel. 

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