The problem:
When you assign 30, 40, 50 trucks to one tower, they are all individually listed. This means you're always scrolling up, and down, to edit the parameters of that mining tower. Which you'll be doing all the time if you have that many trucks assigned lol.
I don't need to know every single individual truck that's assigned to this tower. Displaying every single truck does not provide any useful information, especially not when there are 30, 40, 50 of them.
Suggest: implement item stacking. When you have more than some number of the same truck, let's say 10 or 15, it displays just one icon of that truck, with some text over it saying "x57" showing how many are there.
Example:
