The elevator was "außer Betrieb" (out of order) according to the sign placed on it, so I had to use the staircase.

On the second floor (eerste verdieping). Some long low rooms on the left with no obvious use.

In the centre of the buildiing I found more mechanical rooms.

Fans, not bombs.

Same place

Down a small stair, along some fans, turn right, down a narrow passage, turn right again and end up in a small room with an electric motor driving some kind of equipment (more fans probably). It's a dead end so I turned back.

The rest of the second floor is pretty much the same as the ground floor, exept for the holes in the floor.

More of the same, except for the airconditioning tubes.

"Linde Antriebsmotor" is written on that Energol oil-can. The oil itself has ended up on the floor.