Lignite often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35%, and is considered the lowest rank of coal due to its relatively low heat content. When removed from the ground, it contains a very high amount of moisture which partially explains its low carbon content. Lignite is mined all around the world and is used almost exclusively as a fuel for steam-electric power generation.
Uraninite, also known as pitchblende, is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2 but because of oxidation typically contains variable proportions of U3O8. Radioactive decay of the uranium causes the mineral to contain oxides of lead and trace amounts of helium. It may also contain thorium and rare-earth elements.
Zwickau is, with around 87,500 inhabitants (2020), the fourth-largest city of Saxony after Leipzig, Dresden and Chemnitz and it is the seat of the Zwickau District. The West Saxon city is situated in the valley of the Zwickau Mulde, and lies in a string of cities sitting in the densely populated foreland of the Elster and Ore Mountains stretching from Plauen in the southwest via Zwickau, Chemnitz and Freiberg to Dresden in the northeast. From 1834 until 1952, Zwickau was the seat of the government of the south-western region of Saxony.
The Ore Mountains lie along the Czech–German border, separating the historical regions of Bohemia in the Czech Republic and Saxony in Germany. The highest peaks are the Klínovec in the Czech Republic at 1,244 metres (4,081 ft) above sea level and the Fichtelberg in Germany at 1,215 metres (3,986 ft).
The Socialist Republic of Czechoslovakia (1948–1990) had significant natural resources available. Energy resources included coal and lignite, but to meet energy needs the country also engaged in energy conservation, imports of oil and natural gas from the Soviet Union, and nuclear power and hydroelectricity programs. Czechoslovakia had limited deposits of various metallic mineral ores, and the bulk of mineral supplies were again imported. Other resources within the country were agricultural land, forestry, and labor power.
Ústí nad Labem Region or Ústecký Region is an administrative unit of the Czech Republic, located in the north-western part of the historical land of Bohemia, and named after the capital, Ústí nad Labem. It covers the majority of the former North Bohemia province and is part of the broader area of North Bohemia.
Jizera Mountains, or Izera Mountains, are part of the Western Sudetes on the border between the Czech Republic and Poland. The range got its name from the Jizera River, which rises at the southern base of the Smrk massif. The beech forests within the Jizera Mountains were added to the UNESCO World Heritage Site known as Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe, because of their outstanding preservation and testimony to the ecological history of Europe since the Last Glacial Period.
Uranium mining is the process of extraction of uranium ore from the ground. Over 50 thousand tons of uranium were produced in 2019. Kazakhstan, Canada, and Australia were the top three uranium producers, respectively, and together account for 68% of world production. Other countries producing more than 1,000 tons per year included Namibia, Niger, Russia, Uzbekistan, the United States, and China. Nearly all of the world's mined uranium is used to power nuclear power plants. Historically uranium was also used in applications such as uranium glass or ferrouranium but those applications have declined due to the radioactivity of uranium and are nowadays mostly supplied with a plentiful cheap supply of depleted uranium which is also used in uranium ammunition. In addition to being cheaper, depleted uranium is also less radioactive due to a lower content of short-lived 234
U and 235
U than natural uranium.
Sosa is a former municipality in the western Ore Mountains, in the Erzgebirgskreis, Saxony, Germany. It is a state-recognized health resort, that has belonged to the town Eibenstock since 1 January 2011.
Coal mining regions are significant resource extraction industries in many parts of the world. They provide a large amount of the fossil fuel energy in the world economy.
Uranium ore deposits are economically recoverable concentrations of uranium within the Earth's crust. Uranium is one of the most common elements in the Earth's crust, being 40 times more common than silver and 500 times more common than gold. It can be found almost everywhere in rock, soil, rivers, and oceans. The challenge for commercial uranium extraction is to find those areas where the concentrations are adequate to form an economically viable deposit. The primary use for uranium obtained from mining is in fuel for nuclear reactors.
SAG/SDAG Wismut was a uranium mining company in East Germany during the time of the Cold War. It produced a total of 230,400 tonnes of uranium between 1947 and 1990 and made East Germany the fourth largest producer of uranium ore in the world at the time. It was the largest single producer of uranium ore in the entire sphere of control of the USSR. In 1991 after German reunification it was transformed into the Wismut GmbH company, owned by the Federal Republic of Germany, which is now responsible for the restoration and environmental cleanup of the former mining and milling areas. The head office of SDAG Wismut / Wismut GmbH is in Chemnitz-Siegmar.
Tajikistan has rich deposits of gold, silver, and antimony. The largest silver deposits are in Sughd Province, where Tajikistan's largest gold mining operation also is located. Russia's Norilsk nickel company has explored a large new silver deposit at Bolshoy Kanimansur. More than 400 mineral deposits of some 70 different minerals have been discovered in Tajikistan, including strontium, tungsten, molybdenum, bismuth, salt, lead, zinc, fluorspar, and mercury. These minerals have been found suitable for mining. Uranium, an important mineral in the Soviet era, remains in some quantity but is no longer extracted. The Tajikistan Aluminium Company (TALCO), an aluminium smelter, is the country's only large-scale production enterprise in the mining sector. Tajikistan hosts the annual Mining World Tajikistan, an international exhibition on mining in Dushanbe.
The Turów coal mine or KWB Turów, is a large open pit mine in the southwest of Poland, located outside Bogatynia, Lower Silesia. It feeds the nearby Turów Power Station. The mine is scheduled to be shut down by 2044 when its coal reserves are expected to be depleted.
The Zwickau–Schwarzenberg railway is a main line railway in the German state of Saxony. It extends from Zwickau through the valleys of the Zwickauer Mulde and the Schwarzwasser via Bad Schlema and Aue to Schwarzenberg. It opened in 1858 and it is one of the oldest railways in Germany. It is now served by Regionalbahn trains, operated by Erzgebirgsbahn between Zwickau and Johanngeorgenstadt.
Berggeschrey or Berggeschrei was a German term for the rapid spread of news on the discovery of rich ore deposits that led to the rapid establishment of a mining region, as in the silver rush in the early days of silver ore mining in the Ore Mountains. It is similar in some respects to the gold rush in North America.
The Döhlen Basin is a landscape unit in the German federal state of Saxony, southwest of Dresden. The Döhlen Basin has a length of 22 km and a width of 6 km and lies within the district of Sächsische Schweiz-Osterzgebirge.
The Most Basin is a structural basin and geomorphological mesoregion of the Czech Republic. It is named after the city of Most. It forms the southwestern and central parts of the Ústí nad Labem Region. It is among the richest European deposits of lignite, which has been extracted here since the second half of 19th century, mostly by extensive surface mining.
The BiCoNi Formation is a hydrothermal lode formation, in which bismuth, cobalt, nickel and uranium ores have coalesced. It occurs mainly in the Ore Mountains and is the youngest formation in the hydrothermal sequence. Due to its combination with uranium, it is occasionally also called the bismuth-cobalt-nickel-uranium formation.
The European mining industry has a long tradition. Although the continent's mining earns for a small share of GDP, it provides a large and significant share of the world-wide production.
