Public domain photos

The image shows a group of men in gas masks standing next to each other, with one person holding an object in their hand. On the right side of the image there is a cylinder, and in the background there are lights, pipes, and other objects.

The image shows a group of men in gas masks standing next to each other, with one person holding an object in their hand. On the right side of the image there is a cylinder, and in the background there are lights, pipes, and other objects.Open in library