This is a functioning industry-enabled facility for unloading coal from trains. Because of the dighole required for the pit, the rotation of this model is limited, and only allows the model to be aligned north-south. See kuid2:124017:10123:1 for a version that can be aligned east-west.
The industry supports moving unloading. I set the maximum allowed speed for the unloading somewhat high (~ 11 mph) so that you don't need to be extremely precise with your speed, but for more realistic operation, try to stay around 5 mph while unloading trains.
This model is basically like kuid2:124017:10119:1 without the coal stackers.