refined lead

См. также в других словарях:

• lead processing — Introduction       preparation of the ore for use in various products.       Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low… …   Universalium

• Refined concept map — is a development on the traditional concept maps.In the refined concept maps we provide a constraint set of linking words along with the seed concepts and instruct the mapper to use the linking words from the given set only. This would enable the …   Wikipedia

• Sugar of lead — Sugar Sug ar, n. [OE. sugre, F. sucre (cf. It. zucchero, Sp. az[ u]car), fr. Ar. sukkar, assukkar, fr. Skr. [,c]arkar[=a] sugar, gravel; cf. Per. shakar. Cf. {Saccharine}, {Sucrose}.] 1. A sweet white (or brownish yellow) crystalline substance,… …   The Collaborative International Dictionary of English

• Uranium-lead dating — Uranium lead is one of the oldest and most refined radiometric dating schemes, with a routine age range of about 1 million years to over 4.5 billion years, and with routine precisions in the 0.1 1 percent range. [Parrish, Randall R.; Noble,… …   Wikipedia

• Mineral industry of Africa — The mineral industry of Africa is one of the largest mineral industries in the world. Africa is the second biggest continent, with 30 million km² of land, which implies large quantities of resources. For many African countries, mineral… …   Wikipedia

• Mining in the United Kingdom — Kellingley Colliery on the border of West and North Yorkshire. Mining in the United Kingdom produces a wide variety of mineral fuels, metals, and industrial minerals. In 2006, there were over 2200 active mines, quarries, and offshore drilling… …   Wikipedia

• Metal production in Ukraine — Geographic distribution of ferrous and non ferrous output, expressed in monetary value per capita. Metal production, in particular iron and steel industry, is the dominant heavy industry in Ukraine. Ukraine is the world s eighth largest producer… …   Wikipedia

• South Australia — South Australian. a state in S Australia. 1,285,033; 380,070 sq. mi. (984,380 sq. km). Cap.: Adelaide. * * * State (pop., 2001: 1,514,854), south central Australia. It covers an area of 379,720 sq mi (983,470 sq km), and its capital is Adelaide.… …   Universalium

• pernicious — pernicious, baneful, noxious, deleterious, detrimental are comparable when they mean exceedingly harmful but they differ as to the kind and extent of the potential for harm. Something is either pernicious or baneful which is irreparably harmful… …   New Dictionary of Synonyms

• arts, East Asian — Introduction       music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature.       Some studies of East Asia… …   Universalium

• metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …   Universalium