Polish chemicals group Ciech SA, Warsaw, on Sept. 10 named Dawid Jakubowicz, a supervisory board member, to be interim president of the management board, following the resignation of Maciej Tybura, incumbent president. Tybura cited personal reasons for his decision to step down, according to a company statement. Ciech also appointed Mirosław Skowron to the management board, responsible for issues connected with production, power policy, and traffic maintenance.