Small Industry, Many hoppers

[cacole]

That looks like a fertilizer or cement unloading facility, with all of the trucks parked around the area to deliver the material after it is unloaded from the covered hoppers.

[ericsp]

If you are like most model railroaders you are probably looking for a small industry with large quantities of train cars. I found an aerial photograph of one in Cerritos, CA.
TerraServer Satellite Photograph

Live Maps Bird's Eye View (Added 02/22/09)