On October 2, 1940, after a prolonged and serious illness, the head of the Mine Surveying Department of the Leningrad Mining Institute, Doctor of Technical Sciences, Corresponding Member of the USSR Academy of Sciences, Ivan Mikhailovich Bakhrin, passed away. In 1909, upon graduating from the St. Petersburg Mining Institute, I.M. Bakhrin became the first of the assistant professors at Russia's first department of mine surveying art, which was founded and headed by one of the most popular professors of the Mining Institute, V.I. Bauman. For a long time, I.M. Bakhrin served as Dean of the Mine Surveying Faculty and later of the Mining Faculty of the Institute. In his scientific works, he developed a number of important issues in mine surveying and magnetic prospecting. Ivan Mikhailovich was not only a prominent scientist but also a talented educator. All the key methodological documents on mine surveying education in the USSR were created with his direct participation and under his leadership.