I'd try teaming up with some big name mining companies or showing off live updates of what's going on with my setup so they can see it all for themselves.
If OP can do that, I doubt going to the forum and looking for investors is an upgrade of what he's done. Working with companies usually means a solid connection, so looking for investors would be easier compared to posting on a forum with a newbie account with little to no details about the project. Even someone who needs less than $10k needs more than a PDF to convince people to support their project.
I'd make sure to show them a simple list of what everything costs, how much money we could make back and what i'll do if things go sideways.
I'd honestly expect more than just "simple" things if I need to spend a million to kickstart a company.