RMA wrote:Is that to sift the unburnt coal from the ash?
You could use it for that but I'd venture to guess it was meant for use with regular coal. Basically a small screening "plant". The breakers use the same thing. The screen you see inside it vibrates inside a large plant, you can actually see the building shake over at Hudson.
If you were able to get your hands on some unsized coal you could run it through that, even if you were cracking it yourself. For example if you went to the breaker and asked they may let you scrape up all the breakage and waste from various places at a considerable discount. Just an easy way to separate all the dirt and dust so nothing left but Pea or larger.