Riwon (also spelled Iwon) is a county in South Hamgyong province, North Korea. It is located at the province's northeastern tip, and borders the Sea of Japan (East Sea of Korea) to the southeast. Hangul also refers to a word processing application widely used in Korea. ... It has been suggested that Sino-Korean be merged into this article or section. ... McCune-Reischauer romanization is one of the two most widely used Korean language romanization systems, along with the Revised Romanization of Korean, which replaced (a modified) McCune-Reischauer as the official romanization system in South Korea in 2000. ... The Revised Romanization of Korean (Korean: 국어의 로마자 표기법; 國語의 로마字 表記法) is the official Korean language romanization system in South Korea. ... South Hamgyŏng (Hamgyŏng-namdo) is a province of North Korea. ... The Sea of Japan (East Sea) is a marginal sea of the western Pacific Ocean. ...

Riwon is mountainous, although there are also small plains, and is home to the Taedok Mountains (대덕산맥). The highest peak is Taedoksan (1,442 m). There are some 10 significant streams; the chief of these is the Namdaechon, which drains into the Sea of Japan. There are various bays and islands along the coast. Thanks to its coastal location, the county enjoys a mild maritime climate. Forestland (70% of which is coniferous) takes up 73% of the county's area. An oceanic climate (also called marine west coast climate and maritime climate) is the climate typically found along the west coasts at the middle latitudes of all the worlds continents, and in southeastern Australia; similar climates are also found at high elevations within the tropics. ...

Machine manufacturing dominates the local economy, accounting for half of annual industrial production. Deposits of iron, iron sulfide, talc, limestone, graphite, quartzite and silica are found in the county. The Riwon Mine produces talc. Agriculture is carried out in the plains and along the streams; major crops include rice, soybeans, and maize. Iron(II) sulfide is a form of iron sulfide (others include iron pyrite aka Fools Gold), and can be obtained by reacting iron and sulfur under great heat. ... Talc block Talcum Powder Talc is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. ... Limey shale overlaid by limestone. ... Graphite (named by Abraham Gottlob Werner in 1789 from the Greek γραφειν: to draw/write, for its use in pencils) is one of the allotropes of carbon. ... Quartzite Quartzite is a hard, metamorphic rock which was originally sandstone. ... The chemical compound silicon dioxide, also known as silica, is the oxide of silicon, chemical formula SiO2. ...

Riwon is served by roads, and also by railroads such as the Pyongra Line, Riwon-Cholsan Line, and Chaho Line.

See also

• Geography of North Korea
• Administrative divisions of North Korea
• South Hamgyong

Map of North Korea North Korea is located in eastern Asia, on the northern half of the Korean Peninsula. ... Administrative divisions of North Korea As of 2004, North Korea consisted of two directly-governed cities (Chikalshi; 직할시;直轄市), three special administrative regions with various designations, and nine provinces (Do, singular and plural; 도; 道). These 14 regions are, in turn, divided into a Special... South Hamgyŏng (Hamgyŏng-namdo) is a province of North Korea. ...

External links

• (Korean) In Korean language online encyclopedias:
  • Dusan World Encyclopedia (Naver)
  • Korean language Britannica (Empas)
  • Encyclopedia of Korean National Culture (Empas)
  • Pascal World Encyclopedia (Nate)

The Korean language (, see below) is the official language of both North and South Korea. ...