Thor

-Largely owned and presided over by the Mechanicus ; headquarters of the order is at the top of the Spire. 

 -This Spire's population has a specific and notable phenotype of dark hair and pallid skin that has been noted in the  victims of exsanguination . Investigations of the clinics in this Spire have also yielded results showing still living individuals with inert particles in their bloodstreams. 

 -Near a concentration of this particular phenotype, a member of the Asterion Arbites was assaulted by individuals likely to be agents of Lady von Tarquinius . The cause of this event has yet to be determined; even having thwarted the ongoing abduction of arbitrators has not revealed why the crimes were committed.