Plutonium

Plutonium is a metal added by GregTech, which main purpose is fueling a nucear reactor.

Processing
Unlike most Metals, Plutonium can't be smelted, but needs to be Compressed into ingots. Plutonium also has no nugget form. The primary Plutonium source is Uranium.

Usage
The main usage of Plutonium is fueling a nuclear reactor: