You push the button. I could be evil and say that the room filled with jello that suffocated you, but instead what happened was that doors to Nuclear Plant 7 and 8 opened up.
INVENTORY:
47 HP
Armor Rating 2
50 Armor Points
1 Standard-Issue Pistol
1 Shotgun
1 Unusual Shotgun
3 Standard-Issue Armor (100, 34, 19)
1 Heavy Armor
Stimpack (3)
Medikit
Mod Toolkit (1/0/0/0)
Dirty Porno
Pumpkin
Darkvision Goggles (?)
Nuclear Red Keycard
Gone Fishin'-brand Nuclear Reactor Core Owner's Manual
Opened Box
116 Bullets
15 Shells
174 Experience Points
73.5 Rage Points
65 Over Points
EXITS:
^Nuclear Plant 4
Nuclear Plant 7
Nuclear Plant 8
Just so it's on the record, I'm not responsible for what happens if you walk into four imps while at less than 40% health.