Fyreslayers led by Rygorn-Grimnar established a lodge deep within its belly, looking to find wealth and Ur-gold. Although both were found, large numbers of slayer perished in obtaining it and defending the forge-temple from the dangers of the machine and other invaders such as the Skaven. 
The Grey Seer Reeknik repeatedly attacked the fyreslayers, tasking the Clans Skryre to build many mighty machines (such as the Massive incerator that led to the Warpfire Flood Disaster} to destroy the duardin. Although powerful, they are proved as dangerous to the Skaven as to their enemies. In the climatic battle between the two races, a third force rose up from the depths of the machine, a vast horde of Mordants led by the Abhorrant Ghoul King, Splinterblood fell upon both armies. Only the ghouls survived the ensuing three way conflict. 
The machine continued to walk.