'A sheltered conveyor brings the Disco product from the carbonizers to this sheltered mechanical cooling wharf. A method of careful cooling in motion prevents spontaneous firing of the fuel and avoids injury to the structure of the product. The wharf is contructed of a series of grates, which are successively raised and lowered in a wavelike manner to keep the Disco product in motion and convey it slowly, while it is being cooled, down to the discharge end of the wharf.
'Same story as shown in views of our lump and egg. Stove coal is evenly sized and perfectly prepared. Loaded with booms just the same as other sizes. To be doubly sure no impurities get into the railroad car, we wash this size at two White Oak mines. Treated for dust if desired.'
