During the early years of the Galactic Civil War, Emperor Palpatine stationed work crews on Gargon to mine the element. The ore on Dor was processed and mixed with doonium compounds, which in turn, were used to coat the power core of the second Death Star.
- Star Wars: Knights of the Old Republic II: The Sith Lords
- Star Wars: The Old Republic
- Star Wars: The Old Republic: Rise of the Hutt Cartel (Mentioned only)
- Star Wars: The Old Republic: Galactic Strongholds
- Star Wars: Clone Wars Adventures video game
- Star Wars: Yoda Stories (Non-canonical appearance) (Mentioned only)
- The Glove of Darth Vader (First appearance)