Updated 4/7/2013:
I am declaring victory (or at least a halt) on this module. For now, I am postponing the super-detailing (minor ground changes, slag, ballasting, ground cover, etc.) in order to work on structures hemmed in by Standard Slag.
Here are some photos of the "finished" area.
This is the slag pit with the power shovel in the foreground and a dumping slag car at the top right.
This show shows the steel pilings (before I put the green tank in place).
This is the cabin car track at Weirton Junction Yard.
This is a shot of the dump track at Standard Slag. Two Lionel slag cars (with molten loads) are getting ready to dump their slag. Note the green tank at the end of the spur - that is prototypical. Weirton Steel used compressed air to assist in dumping their hot slag cars.
Slightly closer look at the hot slag cars.
This is a wider look at nearly the entire module. The mills in the background are scratch built foam core structures with Plastruct & Evergreen sides and roofs. On the left is the Blooming Mill; to the right is the Open Hearth.
George