In 2023, Empress Catherine II Saint Petersburg Mining University – the first higher technical educational institution in Russia – turns 250 years. Any significant anniversary is an occasion to look back, analyze and evaluate the way traveled. The article analyzes the main achievements of the Mining University on the basis of statistical material from the moment of the foundation of the Mining School to the present day: educational and pedagogical experience in the education and training of mining specialists, scientific and technical intelligentsia; the outstanding contribution of its scientists, graduates to the establishment and development of the mineral resource complex of Russia, in strengthening the country's defense power, the creation of scientific schools. The first part of the article provides data on the number of graduates for different periods of the history of the university, shows the dynamics of their number growth, the peculiarities of learning. According to the authors, over 250 years, about 99 thousand engineers and mining specialists have been prepared in the university. The second part of the article is devoted to the characteristics of the teaching staff, in which a special place is occupied by his favorites, who have become outstanding scientists, academicians and corresponding members of the Academies of Sciences. Those of them who have devoted more than a dozen years of their lives to teaching within the walls of the university are noted. The final part shows the main scientific achievements of the university: the organization of scientific societies, the development of scientific schools, research institutes, etc. About 200 graduates of the Mining University have been awarded State Prizes for their contribution to the development of science and technology. The work of dissertation councils was noted, in which more than 5 thousand dissertations have been defended since 1943.