What duties did Johann Wolfgang von Goethe perform in the government of Weimar?

Johann Wolfgang von Goethe held several significant administrative roles within the government of the duchy of Weimar, where he served as a member of the ruling Privy Council starting in 1776.1

His duties evolved from initially accompanying the duke, Charles Augustus, and organizing court entertainments to managing various prosaic and demanding responsibilities:1

• Mining: He was tasked with the ambitious project of reviving a silver mine near Ilmenau, which involved legal work, securing shareholders, and managing staff and equipment for over 20 years.1
• Commissions: He took on the War Commission in 1779, in addition to overseeing the Mines and Highways commissions.1
• Exchequer: From 1782, he served as the acting chancellor of the duchy’s Exchequer for two and a half years, a role that effectively made him the prime minister and the principal diplomatic representative for the duchy.1

By 1785, Goethe withdrew from the Privy Council and his most onerous administrative tasks, and upon his return from Italy in 1788, he was largely relieved of routine government duties to focus on his literary work.12