Almaden sentence example

almaden
  • The chief metalliferous deposits of the range are of mercury at New Almaden, not far south of San Francisco.
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  • Almaden, the Sisapon of the Romans, is celebrated for its mercury mines, which were extensively wrought by the Romans and Moors, and are still productive, the ore increasing in richness with the depth of the descent.
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  • The mines ranked with those of Adria, in South Austria, as the most valuable in the world, until the great development of the mercury deposits at New Almaden, in California, U.S.A., between 1853 and 1857.
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  • They were long worked by convict labour, owing to their unhealthy atmosphere; and exemption from military service is granted to miners who have worked at Almaden for two years.
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  • The New Almaden mine (opened in 1824) in Santa Clara county produced from 1850 to 1896 some 73,000,000 pounds.
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  • The still more celebrated mercury mines of Almaden, the richest in the world till the discovery of the Californian mines of New Almaden, belong to Ciudad Real, and this province, together with that of Oviedo, furnishes the whole of the Spanish production of this mineral.
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  • The large furnaces for the distillation of mercury at Almaden were at one time heated solely with charcoal obtained from the Cistus ladaniferus.
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