SAU wrote: and I know you guys clean your coal but didn't know the process until now.
I guess it could be classified as cleaning but the cleaning is when it goes to the sizing plant. They run it over screens and use water to help get the smaller stuff to go through the screens. Anthracite when completely processed is quite uniform in size and won't have much dirt and dust at all. When it exits the breaker it's pretty much a perfectly sized and clean piece however further breakage occurs from there simply from it dropping from the chute, the loader moving it around, breakage during delivery. etc. Where I was getting my coal they cleaned it one more time right before it went in the truck, they loaded it into a separate hopper and it went over a screen with spray bars. If you have really clean product that hasn't been messed with much you might end up with a shovel full of dirt and dust over a 5 ton load.