The right button can be used safely. Return to the "radiation" room, back downstairs, and jump angle dstv dish
the large pit on the west side of the room. This drops mixcraft 6.1 build 217 serial down to a lower level room. From this room, take one of the pair of exits (they meet on the other side of the wall), then head down 61. gauntlet hallway. The last niche on the east wall is really a ramp.