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jan 1, 1976 - Aperture Science constructs at least Chamber 05 of the Propulsion Gel Testing Facility. (Portal 2 - Trivia)

Description:

- 1976
- Aperture Science constructs at least Chamber 05 of the Propulsion Gel Testing Facility.

Added to timeline:

Half-Life and Portal Universe Timeline

ByThe Fancy Fedora

25 Dec 2018

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Date:

jan 1, 1976

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~ 49 years ago

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