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  • Niobium - Wikipedia

    Niobium, 41 Nb General properties Name, symbol niobium, Nb Pronunciation / n aɪ ˈ oʊ b i ə m / ny-OH-bee-əm Alternative name columbium Appearance gray metallic, bluish when oxidized . Atomic properties Oxidation states 5, 4, 3, 2, 1, 1, 3 (a mildly acidic oxide)

  • How A US Firm Hopes To Keep Tantalum In Africa A Little Longer Before It Ends Up In Your Cell Phone . AFKInsider

    Tantalum has other uses besides mobile phones. This tantalum marker is used for proton beam radiotherapy in eye surgery. Photo: retinalmd If you own a mobile phone, chances are it has tantalum in it from Africa and you have small amounts of the rare metal within inches of your brain. Most of the

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    freedomlist is the leading China bearings sourcing and supplier discovery platform connecting China bearings manufacturers, bearings suppliers, traders and wholesalers with worldwide buyers from the international marketParking Tenet Red Single Channel .

  • Tantalum - Wikipedia

    Tantalum is a chemical element with symbol Ta and atomic number 73. Previously known as tantalium, its name comes from Tantalus, a villain from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It is .

  • Naturally Occurring Radioactive Materials NORM - World Nuclear Association

    Naturally-Occurring Radioactive Materials (NORM) (Updated December 2016) Radioactive materials which occur naturally and where human activities increase the exposure of people to ionising radiation are known by the acronym 'NORM'. NORM results from .

  • Tantalum - Sources and Properties of Tantalum

    Tantalum is a refractory metal used mainly for making capacitors and as an alloying additive. Its main sources are described as well as a new source in Saudi Arabia. The sources of Tantalum such as Australia and Africa are explored

  • The Effects of Electromagnetic Fields: What is Penetrating You?

    The health hazards and spiritual effects of electromagnetic fields, or EMFs, by Cathee Courter with Peter MacGill . I agree that positive thinking helps health. However, when I've heard this said, it's always been by some cell phone junkie who didn't want to turn the .

  • 1989 - Present - 1page Mirror Intro

    Historical Timeline Calendar Months Most newspaper article events happen anywhere from days, to months, to years before they reach publication. Consequently, most newspaper articles on this timeline are preceded by the date of the newspaper in which they .

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  • Mining News and Investment Topics - MINING

    Mining news topics from MINING. The latest news on mining, mines and mineral properties, mining companies and metal pricesC CAB Cabo Drilling CADILLAC VENTURES INC. Cadmium Caledonia Mining Calgary Calibre Mining California Callinex Mines