with production of 420,850,000 tonnes. No less than 30% of USSR iron production in the USSR was obtained in the Kuznets zone in 1937. Iron deposits: Urals: sources of these mineral exist in Nizhni-Tagil, Zlatoust and Magnitogorsk, with a total production of 2,600,000 tonnes in 1937. Gornaya Shoria: exist iron, in Magnetite form, inside of Calize mineral why poses one 45% of iron content, but more Sulphur. Ridder: if extracted iron mixed with lead and zinc. Your total production in 1936 are about 1,000 tonnes. At the same time in the same mine extracted gold, copper and tin. Other minerals and general observations Manganese: mined in the Urals, Kazakhstan and west of Krasnoyarsk. Their extractions effectuated in Achinsk Mine with one mineral with 20 or 25% of purity. The total production in 1937 was about 100,000 tonnes. Copper: possess ample reserves in Urals and Kazakhastan. Its total production in 1930 was 34,105 tonnes, increasing in 1936 to 83,000 tonnes. In East Kazakhastan exist the Yaciment of Kounrad, their minerals are composed of less than 2% copper, and these extraction are uneconomic. And the mine of Djezkazgan with double production why mentioned mine above. Pyrite: the founts of these mineral stay in diverse sites, such as Krasnouralsk and Orsk. Lead and zinc: the sources stay in the Siberian areas of Ridder Mine in Altai, Transbaikalia and Maritime Province. The total production of lead and zinc in 1936 were 55,000 and 63,000 tonnes respectively. Aluminum: the sources of these material stay in North Urals, in Khabakovsk ancient, Nadezhdinsk, and south Urals in Kamensk. The USSR has a total production of aluminum in 1939 of 60,000 tonnes. Nickel: the most important deposits are in Norilsk, near low Yenisei. Local production was 3,000 tonnes in 1938. Gold: Was believed to be mined before in the Urals and in Siberia from medieval times. The estimates in 1936, mentioned about 5,173,000 oz, which then reduced later to about 4,500,000 oz. These deposits exist near the Aldan and Kolyma rivers in Yakutia and others in Central Asia and the Urals. Chromium: In the Urals mountains was obtained 200,000 tonnes of chromite. Tin and Tungsten: there exist deposits of these minerals in the East Baikal Area and Kazakhstan. Borax and Potash: These minerals are exploited in great quantities in Solikamsk. The local production was 1,800,000 tonnes in 1937. The total reserves of potash are estimated at 15,000 tonnes,