On the third floor, go west(left side of statues), there in one room there should be a magnet(if I am not wrong, a ladder also), the first door on left. Then, towards the bottom right of screen, there is a big went, click on it, use the pickaxe. Go there, you will see the chest, use the magnet on the chest. That for a Val page. Go to the southside of the went, use the ladder on the welder. Then, all you have to do is go to Buddy in the forest with the "Metal Ladder."
lord92 , you also check it out as well.