Ferrous metallurgy on January 1, 1933, 1934. From the atlas "Industry of the USSR at the beginning of the 2nd Five-Year Plan. Geographical atlas." Conventional signs: boundaries (5 types), settlements (5 groups), railways (operating, under construction); the time of the establishment of factories (4 types), factories (12 types), mining administrations of mines under construction for the extraction of iron ore, deposits of manganese and iron ores (5 types); numbers indicate the serial numbers of industrial enterprises in the list (Appendix: List of industrial enterprises to the Atlas. M., 1934).