Mining Academy took active part in the Polish-Soviet war in 1920. These events were described by Professor Antoni Hoborski: ‘our youth submitted to voluntary conscription, which I witnessed; then, on the 19th day of July 1920, they all went to their camps (only 6 were deemed unfit for military service)’. Development in the interwar period On June 15, 1923, with the participation of the contemporary President of the Republic of Poland, Stanisław Wojciechowski, and numerous representatives of the world of science and mining industry, the cornerstone of the new main building of the academy was lain. In 1925, the design of the Mining Academy emblem was created. It had the initials B.T. (Bogdan Treter) on it. It was probably approved by the General Assembly of Professors. From September 1929 to March 1930, the main building was gradually filled with departments and central administration of the academy. In 1935, the building was officially and ceremonially blessed. The academy has quickly achieved a high-quality level of education, assuming its place among the best mining schools in Europe. Moreover, since its inauguration, the academy has cooperated closely with industry, according to its resources and capabilities, and maintained connections with the Polish economy. The Main Building of the Mining Academy assumed its final shape shortly before the outbreak of World War II. The construction is a perfect example of academic classicism, in style in the 1920s in Poland, which constitutes a manifestation of the power and might of the reborn Polish state. The façade decoration was complemented by monumental statues of miners and metallurgists. The figures were made in 1935 by the sculptor Jan Raszka. On August 24, 1939, the top of the building was crowned with the statue of Saint Barbara made by Stefan Zbigniewicz. At its two faculties, the Faculty of Mining and the Faculty of Metallurgy, in the interwar period, the Mining Academy had educated 792 engineers, many of whom later held high positions in Polish industry and higher education. World War II The Nazi German invasion of Poland in September 1939 brought the university to a halt. On September 6, Krakow was seized by German troops. They began to loot and plunder the university property, and reorganise the Main Building of the Mining Academy to house the Regierung des Generalgouvernements (General Government administration). In 1940, the statue of Saint Barbara was thrown off the top of the main building and