Extractor could also have been brought in as parts and assembled/bolted on site. Can only imagine the damp, hot and humid conditons of a laundry located in a second level sub-basement.
You'll notice each laundry has an extractor, which we can assume the washers only washed and or spun very slowly, if at all.
Had an ironing table similar to the one in the last photo built in my laundry area for doing linens. Can do large bed sheets, table cloths and the like faster than using my ironers.
Still cannot imagine ironing an entire daily hospital's worth of linens that way.