RotoGrate Technicolor A colorful boiler is a happy boiler! RotoGrate systems remove ashes from the boiler firebox by revolving the bottom of the system to let the fly ash drop into a hopper. This greatly increases boiler efficiency. Similar Images ...based on the tags: boilers, bokeh, bolts, doors, machinery, rusty, stokers, switches... The machine shop today. Some of the internal staircases were fitted with cages that wound round down the stairs to deter suicidal patients from taking a dive. The incinerator’s hardened steel door… useless, but still sexy in a heavy-industrial kind of way. Peeling paint reveals the room numbers of the past. Kodak Trix-400 on Canon T40. A photo from my first trip, although very little has changed in this area of the building except for the level of graffiti. I love skylights, don’t you? Chairs facing the stage in the old cafeteria. Fuji FP100c in Fuji GX680. This picture tells half the story about the size of half of the complex. For Port Arthur, it’s average, but this would be a fantastically large elevator if it were anywhere else! These stairs lead to the balcony. Off the beaten path is this old LTV sign. Now it points to a ghost town and dead dock.