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Karviná

(Encyclopedia)Karviná kärˈvĭnä [key], Ger. Karwin, city (1991 pop. 68,405), NE Czech Republic, in Moravia, near the Polish border. It is an industrial center of the Ostrava-Karviná coal-mining region. Formerl...

Kempenland

(Encyclopedia)Kempenland kĕmˈpənländ [key], Fr. Campine, region, Limburg and Antwerp provs., NE Belgium, and North Brabant prov., S Netherlands. It is a coal-mining and manufacturing area. Chemicals are also pr...

spontaneous combustion

(Encyclopedia)spontaneous combustion, phenomenon in which a substance unexpectedly bursts into flame without apparent cause. In ordinary combustion, a substance is deliberately heated to its ignition point to make ...

Canonsburg

(Encyclopedia)Canonsburg, borough (2020 pop. 8,672), Washington co., SW Pa., inc. 1802. Its steel and coal industries have declined significantly. A gram of radium pr...

Bikaner

(Encyclopedia)Bikaner bĭkənērˈ [key], former native state, NW India. The state is now part of Rajasthan ...

Bohemian Forest

(Encyclopedia)Bohemian Forest, Czech Český Les, Ger. Böhmerwald, mountain range, extending c.150 mi (240 km) along the S Czech-German border and extending into Austria. The Czech name for its southern section is...

Lota

(Encyclopedia)Lota lōˈtä [key], city (1992 pop. 50,123), S central Chile, a port on the Gulf of Arauco, an inlet of the Pacific Ocean. Founded in the 17th cent., the city grew rapidly after coal was discovered i...

ash, in chemistry

(Encyclopedia)ash, in chemistry, solid residue of combustion. The chemical composition of an ash depends on that of the substance burned. Wood ash contains metal carbonates (e.g., potassium carbonate) and oxides fo...

Baotou

(Encyclopedia)Baotou or Paotow both: bou-tō [key], city (1994 est. pop. 1,032,900), Inner Mongolian Autonomous Region, China. A port and major trade center on the Huang He (Yellow River), it is connected by rail w...

Ilkeston

(Encyclopedia)Ilkeston ĭlˈkĕstən [key], town , Derbyshire, central England. Iron and coal mines lie to the ...