Zilda's brother worked on the same sandminer as Ander Poul, Kiy Uvanov and Kerril circa 2870, when he was a young boy. Due to Grimwade's Syndrome, he was terrified of the Kaldor androids and died after running out of the sandminer in fear.
Uvanov tried to save him, although Poul believed that he had deliberately left him outside to avoid missing a good storm. The boy's father hushed up what had happened to keep people from thinking that he had been a coward. Zilda joined Storm Mine 4 ten years later to find out what actually happened. (TV: The Robots of Death)