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DOOM 3 Hints
How do I open the hazard door in the Central Pipes Junction?
1 of 3: The other half of the area has a storage room with a door to Hazard Room Maintenance, which in turn has a door to Hazardous Material Control. That sounds promising.
2 of 3: Sure 'nuff! There's a panel in there with a button that says "Vent Containment Chamber."
3 of 3: After you press it, you can go back to the Central Pipes Junction and go through its hazard door.
