I think that this might be the answer, but will stand corrected.

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Perhaps a better example...

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By jove, I believe you've solved the mystery. Possibly the photograph was taken from a bridge structure. :notworthy

Nailed it, good find C.

That's so cool! I've seen those before and wondered about them but never realized that it had to do with the bridge.

Speedy...

I didn't know they labeled steam engine with day and night signals as to whether the were going forward pulling the train, or running backward pushing the train.
The pulling engine was also marked as to whether there was one pushing or not.

I can understand if an engineer suddenly sees another engine on the same track facing him, it's nice to have signals to tell him if it's pushing a trrain or to bail out. But I don't see why the pulling engine would be labeled that there's a pusher at the other end?

Now this shows four engines pushing a big plow but they're all facing forward.

Oh, and the boilers are designed for the type of coal available, Anthracite being high-test and preferable, with more heat for the weight so better mileage and less shoveling. Places like India where the coal is very low grade they might have there own designs.

Drag race, rollin' coal...

Attachment 65070

The filename says bridgewashedout...I make no guarantees as to the veracity of the description of the water-spanning device.

Looks like a scene from Culverts Travels.

Thermite welding...

The muscle memory in those guys. They just keep working, with no wasted movements that I can see.

That oughta hold 'er.
Looks like about ten specialized tools.

I freaked out a bit with the face-level blowtorch, but I expect the perspective made it look much closer to the other guy's head than it actually was.