this place is huge. It is the inside of this bulding (simply called warehouse E) [link]
There are 8 floors in all and what you are seeing is floor 1 and the ceiling of what would have been floor 2. Floor 2 was wooden and you can barely see where it was mounted half way up the pillars. The salvage company has already claimed all the wood from this old barrel warehouse. all the even numbered floors are gone. Look way to the right and you can barely see the fire extinguisher still mounted on the pillar for 2nd floor access.