This is an interesting piece that uses an MTH grainery that is kit bashed into a coal bunker. It uses the walls for the elevator part and the top floor and roof above the silos. Would they have used stone in a prototype? probably not above the silos due to the weight but it does have an interesting look to it. The silos are pvc pipe and part of the coal chutes are 3d printed by Ed Traxler. https://www.shapeways.com/shops/fuzzypossum
The metal roofing was sanded off and replaced by peel and stick shingles by Builders in Scale.
Ed also made me some great lamp shades in G gauge and many products in O scale. 
