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. Related Similar Images ...based on the tags: boilers, bokeh, bolts, doors, machinery, rusty, stokers, switches... Outside the locker room without the sandwiches and beer… plenty of glass shards, though, if you feel like it. A hydraulic ‘bridge’ couple lower onto the tracks to bring mine cars into the shaft house, presumably for repair. I haven’t found this system anywhere else, but it makes a lot of sense. The engine room. An old nurse’s station (you can tell because of the half-door with table) with torn-up tiles. Notice through the curved doorway that even the ceiling has a curvature. The modern morgue, a replacement for the original morgue which has since been turned into a kitchen area. Looking through a launcher doorway at an outbuilding… the fire truck garage, if I recall correctly. Fomapan medium format in Pentax 67. Inside the pilot copper concentrator. If it weren’t for the fact there were trees growing from it, and that I cropped out the end of the rail approach, one might think this is still used occasionally. After Wilson Bros moved out, a furniture company moved in.