Object:Subterranean extension
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| Subterranean extension | |
| |
| Characteristics | |
| Category | Planetary base extension |
| Value | 56999 |
| Volumen | 2000 |
Planetary base extensions can be installed on a planetary basis. They increase the available space of the base. Each extension is limited to the type of environment on the planet.
Planetary base extension. Installable on any kind of environment planets.
Installation requirements
| Power | 120 |
| Personnel | 50 |
| Space | 0 |
Resources needed
 |
Metals | 600 |
 |
Silicates | 2000 |
 |
Carbon compounds | 600 |
 |
Inert gases | 300 |
 |
Water | 800 |
 |
Rare earths | 300 |