Kel-Morian Combine (formerly?)
Usagi Hidalgo was offended by the KMC mining teams, as they were stealing claims from the miners. In revenge, Hidalgo detonated a 20 megaton nuclear device, turning a sizable portion of the planet into a nuclear wasteland.
2007-04-28, Hotspot. StarCraft Compendium Map Archive. Accessed on 2007-11-12