caption: The image shows a black and white photo of two men working on a train in a factory. The man on the left is sitting on a stool and holding a pipe in his hand, while the other man is standing on the right side of the image. In the middle of the picture, there is a machine and a ladder, and on the floor there are pipes. On the left side, there are windows and a wall, and at the top of the roof there are lights.