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Příbram

(Encyclopedia)Příbram pərzhĭbˈräm [key], town (1991 pop. 36,898), SW Czech Republic, in Bohemia. It is one of the oldest gold- and silver-mining centers of Bohemia, with mine shafts more than 3,000 ft (914 m)...

Rouyn-Noranda

(Encyclopedia)Rouyn-Noranda ro͞oˈĭn nərănˈdə, Fr. ro͞oăNˈ [key], city (1991 pop. 26,448), extreme SW Que., Canada. Created (1986) by an amalgamation of Rouyn and Noranda, it is the center of a gold-, copp...

atomic clock

(Encyclopedia)atomic clock, electric or electronic timekeeping device that is controlled by atomic or molecular oscillations. A timekeeping device must contain or be connected to some apparatus that oscillates at a...

Boutwell, George Sewall

(Encyclopedia)Boutwell, George Sewall so͞oˈəl boutˈwəl, –wĕl [key], 1818–1905, American politician, b. Brookline, Mass. He served seven terms in the Massachusetts legislature between 1842 and 1851, was el...

Omagh

(Encyclopedia)Omagh ōˈmä [key], town (1991 pop. 14,627), Omagh dist., W Northern Ireland, on the Strule River. The town is a farm market. Dairy products are processed and shirts are manufactured. The discovery i...

Leadville

(Encyclopedia)Leadville lĕdˈvĭl [key], mining city (1990 pop. 2,629), alt. c.10,200 ft (3,110 m), seat of Lake co., central Colo., near the headwaters of the Arkansas River, in the Rocky Mts.; inc. 1878. Some mi...

Heckscher, Eli Filip

(Encyclopedia)Heckscher, Eli Filip ĕˈlē fĭlˈĭp hĕkˈshər [key], 1879–1952, Swedish economic historian. Influenced by the neoclassical economics of Alfred Marshall, Heckscher advocated the use of monetary ...

Miass

(Encyclopedia)Miass mēäsˈ [key], river (c.390 mi/630 km long), W Siberian Russia. It rises in the eastern slopes of the S Urals and flows N and NE past Chelyabinsk into the Iset, a tributary of the Ob River. The...

Browne, Thomas Alexander

(Encyclopedia)Browne, Thomas Alexander, pseud. Rolf Boldrewood rōf bôlˈdərwo͝odˌ, rôlf [key], 1826–1915, Australian author. A squatter, a magistrate, and a commissioner in the gold fields, he wrote many bo...

Brakpan

(Encyclopedia)Brakpan brăkˈpăn [key], city, now part of Ekurhuleni metropolitan municipality, Gauteng prov., NE South Africa. It is a gold- and coal-mining center and has an ironworks. There is also a technical ...