During the Marxist Period, the interest of Historians in facts of Kutna Hora mining area was intense primarily concentrating on analysis of mining conditions at individual ore lodes. The issues of ore processing and smelting were of minor interest. Despite the fact that ore contractors dealings and their business activities attracted specialist attention, the only study concerning the guild of the ore contractors has long been Jarmila Hásková s study. She primarily used her older notes and literature and left aside the corporations of smelters and ore washers that formed joint corporations with the ore contractors. Thus, her study presents the guild history in general frame. The presented study tries to complement history of the both above-mentioned guilds until their end.