It is likely he had appointed Johann Heinrich Gottlob Justi to improve the recollection of silver and cop-per from debased coins through cupellation; his furnace in Retwisch was taken over by Veitel Heine Ephraim.
It is likely he had appointed Johann Heinrich Gottlob Justi to improve the recollection of silver and cop-per from debased coins through cupellation. His furnace in Retwisch was taken over by Veitel Heine Ephraim.