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Turning train carriage to unload coal.
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Previously:
Coal barge hull failure - GIF
Coal car loading - GIF
Coal conveyor fire - GIF
Coal mine canary reviving chamber - photo
Coal mine overburden conveyor - photo
Coal train dust mitigation - GIF
Loaders sifting coal - GIF
I have experience with these things. They're very neat. Unfortunately the one in the video is in quite a state of disrepair. I have some videos of much better rail dumpers, but unfortunately I think some clients would get upset if I uploaded them.
What will really blow your mind is the larger units that are designed to rotate about the coupling on the rail cars. Why? Because a lot of rail cars use couplings THAT CAN SWIVEL. That allows you to shift the train forward (usually two cars at a time) and unload rail cars without uncoupling them.
Edit: Here are two videos of rail dumpers that do not decouple the cars.
https://www.youtube.com/watch?v=DbJl_Astx_w
https://www.youtube.com/watch?v=D_92umYUNv0
I'd say that not only is the first one in need of work it is also more crudely designed and constructed.