This bunker has an oil hatch on top, of the bump required for the Soundtraxx Mini Cube Speaker, but any fuel can be added by the modler over this to make your shay coal or wood fired as you wish.
The Coffee Creek Shay Kits turn the Atlas N Scale Shay into a Hon30 Shay based on a contractors 13 Ton or 20-22 Ton B Type. The boiler is designed with shelfs for a Digitrax Tiny Decoder, and bunker for Soundtraxx Mini Cube and a DIgitrax Soundbug. To assemble the Model you require 4 parts of the various options:
1-Hon30 Coffee Creek Shay Frame
1-Hon30 Coffee Creek Light Shay Bunker
1-Hon30 Coffee Creek Light Shay Boiler (Plastic or Metal)
1-Hon30 Coffee Creek Light Shay Cab (Steel, Wood, or Old Wood
Optional stacks and box headlight
Please download the instructions here: https://www.shapeways.com/forum/t/hon30-coffee-creek-light-shay-instructions.98958/