Blast Door II One of the many blast doors. Note the plunger to seal off the airflow in the event of an attack or accidental explosion. Related Similar Images ...based on the tags: blast-doors, green, grimy, rusty, steel... A crack in a window in a wall. What’s this doing here? Worm in the path of raw ore where it would be dumped from rock cars into the silo below. Taken at a junction in the tube world. This is where the lime would spill out. Days after the long-flooded basement was pumped out. Note the water lines! A colorful makeshift wall. “The fresh snow mixed indistinguishably from the ashes of the half-demolished power plant.” I wonder what this guy is thinking, walking through the complex. Interlocking bricks at the mouth of the stoker-less boiler.