I build a lot of mine models and have always found it tedious to get the upright supports on the side of the ore bins correct. Lots of sanding and fitting.
But then I found this photo on the internet of an ore bin that uses a different technique for supporting the ore bin floor.
Instead of using one heavy beam to support the ore bin floor, this bin has two lighter beams. One of each side of the upright beams.
Using this method will make building ore bins easier.