The Thergum Pits, situated on the planet of Essowyn, became a point of conflict between the nations of Tresycht and Yiszte. The Messert Mines Corporation entered into an agreement with Tresycht, initiating mining activities within the Thergum Pits. As part of this deal, they supplied both machinery and armed personnel, effectively assisting Tresycht in dominating the nation of Yiszte.