The most important activities of the Academy in the 1920s included an investigation of the large Kursk Magnetic Anomaly, of the minerals in the Kola Peninsula, and participation in the GOELRO plan targeted electrification of the whole country. In these years, many research institutions were established, and the number of scientists became four times larger than in 1917. In 1925 the Soviet government recognized the Russian Academy of Sciences as the "highest all-Union scientific institution" and renamed it the Academy of Sciences of the Soviet Union.