Geophysical borehole surveys are the main method of distinguishing coal seams when studying a geological section. The example of Solntsevskoye coal deposit shows the efficiency of using statistical analysis in the interpretation of GIS data. The conducted statistical processing of data allowed more correctly distinguish petrophysical complexes represented in the geological section. The formed statistical physical and geological model of the geological section of the field allowed to recommend additional ways of interpretation of geophysical data.

It has been 75 years since the discovery of a diamond placer at the Sokolinaya Kos in the Vilyui River valley, located 6 km upstream of the Krestyakh settlement, which forced the search to move from the Irkutsk Region to the Sakha (Yakutia) region. This discovery was made on August 7, 1949 by Grigory Feinstein's party, which at that time was part of the Tunguska expedition, which was headed by Mikhail Odintsov, the initiator of diamond prospecting on the Siberian platform, who in the fall of 1949, after defending his doctoral thesis, was appointed the first dean of the independent geological faculty. Five years later, on August 21, 1954, a young woman from the All-Russian Geological Exploration Institute in Leningrad, Larisa Popugaeva, discovered the first indigenous source of diamonds in Siberia - the Zarnitsa kimberlite pipe, using the pyrope method of prospecting on the advice of Alexander Kukharenko. Seventy years have passed since that date.

The history of studying the Botogol graphite deposit has been going on for more than a century. Among others, geologists of the Irkutsk State University N.A. Florensov, M.M. Odintsov, V.S. Sobolev and V.P. Solonenko, who later became world-famous scientists, made a great contribution to understanding the genesis and structure of this unique deposit. They worked at the deposit during the Great Patriotic War, when graphite was a strategic raw material and the country's industry was in dire need of it.