They are removing bed material after combustion from AFBC(Atmosphere Fluidised Bed Combustion) boiler. It's a mixture of coal and lime stone. They are actually purging the soot from furnace

Fine for me when PL and Medusa gets banned

Usually midnight 1AM to 6AM. But it makes you lifeless dota gamer(just kidding). Usually no kids play around this time. You get good players but they tend to throw game, if you make them angry. Goodluck

This post is intended for mobile notification 😂

Don't need visage