Luggnum is a backwater Mining World situated in a relatively isolated region of the Golgenna Reach Sub-sector of the Calixis Sector. The ores obtained through the backbreaking labour of Luggnum's lower classes are useful but unremarkable -- a description that could be applied to the entire planet. As a Mining World, Luggnum is often overshadowed by the nearby Sepheris Secundus. While the Imperial Guard regiments raised from Luggnum may not be as famed as the Brontian Longknives, or as oft-imitated as the Cadian Shock Troops, they are every bit as tough, as dependable, and as under-appreciated as the ore quarried from the depths of their homeworld. This core world produces strong, battle-worthy Imperial Guard regiments known as the Sewer Rats.