I know all about the plans that Micheal Rabbit offers.
Welllll, excuse me.
The 1/2 of HO = N dirty conversion would have been much easier and plenty close enoughconsidering the scale of steel plants
If that's all you want pick up a copy of Plastruct's Cyclopedia of Industrial Modeling. It's all steel, all Freytag, all the time and everyting in it is built with Plastruct parts, and each project includes handy lists of what item numbers you need.