Left over kit pieces or scrap can be used to create gondola scrap loads.  spray the pieces brown or gray and add your pigments, rust, dirt, or grime as you wish.

Hopper Weathering Clinic II
By Bill Mock
December 2009

So here's how those BN Hoppers turned out after the surface rust dried. Not bad. I'll [ ... ]

The more I research the buildings involved in baseball, the industry, the more I realize two things.

1. The types and variety of buildings reflect all [ ... ]

This is the first mainline run without any of the extras.