Jason,
I just watched the video again and went thru the build thread, very cool!
Did you start with a scale/plan in mind when you drew it up? Do you plan to park dump trucks under it, or separate the piles with concrete barriers and then load out with a wheel loader or possible use roll off dumps?
How tall is it overall and if you are scale I assume you are trying to match the bruder and tamiya stuff?
I'm just trying to figure out a few of those things before I try to hack something together.
Did you consider a jaw crusher for part of this setup? I wonder how hard it would be to build something in that scale and have it perform well?
Thanks!