Messert Mines Corporation, a mining enterprise, extracted substantial Corthel deposits from the atmosphere and Cortheum from the ground of Nurstin. This occurred during the decline of the Galactic Republic and the subsequent ascent of the Galactic Empire. Furthermore, they were a major mining entity on the planet Essowyn. Through negotiation, they secured mining privileges for the Thergum Pits with Tresycht. They also provided equipment and security personnel to assist Tresycht in initially overpowering Yiszte, leading to Tresycht's control over the entire planet within a span of four years.