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See also:ALMADEN, or ALMADEN DEL AZOGUE , a See also:town of See also:Spain, in the See also:province of See also:Ciudad Real; situated in mountainous See also:country 55 m . W.S.W. of the See also:city of Ciudad Real . Pop . (1900) 7375 . See also:Almaden, the Sisapon of the See also:Romans, is celebrated for its See also:mercury mines, which were extensively wrought by the Romans and See also:Moors, and are still productive, the ore increasing in richness with the See also:depth of the descent . The mines ranked with those of See also:Adria, in See also:South See also:Austria, as the most valuable in the See also:world, until the See also:great development of the mercury deposits at New Almaden, in See also:California, U.S.A., between 1853 and 1857 . They were See also:long worked, by convict labour, owing to their unhealthy See also:atmosphere; and exemption from military service is granted to miners who have worked at Almaden for two years . The See also:annual yield is about 1,400,000 lb . See also:Lead and See also:sulphur are obtained in the neighbourhood . The nearest railway station is that of Chillbn, 3 m . S. on the See also:Madrid-See also:Badajoz-See also:Lisbon See also:line . |
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