The Klegger Corp Mining Facility, also known simply as the Klegger Mining Facility, was a mining facility on Mustafar built on the side of a mountain, overlooking a lava river. It was owned by Klegger Corporation, a subsidiary of the Techno Union.
Toward the end of the Clone Wars, it served as the headquarters of the Separatist Council. The Council members were slain there at the hands of Darth Vader. The deaths of the Separatist Council transformed the area into a dark side nexus, similar to the Dark Side Cave of Dagobah.
The mining facility was destroyed when it was host to the violent duel between Darth Vader and Obi-Wan Kenobi in 19 BBY. The two disabled the facility's shields by damaging the control room, causing the complex to quickly melt into the environment.
For two months, it was not known what had happened to the members of the Separatist Council, as Palpatine, newly-christened the Emperor of the galaxy, used the public speculation that they were still alive to galvanize the Imperial military. A salvage team eventually traveled to the facility and found the remains of the Separatist leaders executed by Vader.[source?]
Gizor Dellso, a Separatist holdout leader, later establishing his base-of-operations at a secret droid foundry hidden within the mountain of the Klegger Corp Mining Facility. By countermanding the droid deactivation signal which he helped create,[source?] he was able to produce a private droid army to resist the Galactic Empire. With the assistance of other Geonosians, he also developed schematics for a prototype infantry droid. When stormtroopers of the Imperial 501st Legion were sent to Mustafar to crush Dellso's uprising, the mining facility was caught in their orbital bombardment which destroyed the factory.
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