This is a functioning industry-enabled facility for unloading Iron Ore from trains. The Iron Ore storage piles are animated so that they grow and shrink in size as deliver and remove Iron Ore. Because of the dighole required for the pit, the rotation of this model is limited, and only allows the length of the model to 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.
Iron Ore storage capacity = 95,000 tons (= 86,000,000 kg) (= 100,000,000 L)
max unloading speed = 11 mph (= 18 km/h)