But then they would melt down the old and reissue them debauched with increasing portions of less precious metal alloys.
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Notice how it always begins with the brighter, shinier Autobots, but slowly descends into grease-covered gears and whirling metal that has less and less clear form.
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Although that is two to three times the cost of a metal detector, it is less than the price of the fancy explosive-sniffing equipment that is the main rival technology being developed for detecting metal-free mines.
They produce everything from aluminium to zircon, and so are less susceptible to fluctuations in the price of any particular metal.
The gold market this week is acting more like a safe-haven asset and less like a risk asset, which is frustrating the yellow metal bulls.
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But the recent stronger dollar has been less of a bearish weight on gold, as the yellow metal has seen better safe-haven demand surface as the new year gets under way.
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Given current consumption of the metal, this is sufficient for only 13 years and less than that if CIGS technology takes-off.
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However, the stronger dollar has been less of a bearish weight on gold recently, as the yellow metal has seen better safe-haven demand surface.
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Otherwise, smaller investors who know they definitely want physical metal to begin with may be able to do so less expensively elsewhere, Clark said.
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Weinberg added if the economic does take a downturn, automobile purchases will decline, meaning less use of platinum in autocatalysts, the biggest user of the metal.
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However, the stronger dollar has been less of a bearish factor for gold recently, as the yellow metal has seen better safe-haven demand surface as the new year is under way.
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As water-based materials are better at stopping radiation than metal, the approach theoretically represents the best of all worlds with less bulk, a simpler life support system and maximum room for supplies.
What has been noticeable this week is the precious yellow metal has begun to act more like a safe-haven asset and less like a risk asset.
Food-safety officials in the southern province of Guangdong on Wednesday released the results of tests that showed less than 5% of local rice supplies contained excessive levels of cadmium, a carcinogenic heavy metal that can wreak havoc on the kidneys and weaken bones if ingested in large quantities.
Though less efficient at converting sunlight into electricity than conventional crystalline photovoltaics, CIGS cells are essentially printed on glass or flexible metal and use a minimum amount of expensive silicon.
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European Union guidelines say that earrings are supposed to contain less than 0.05% nickel by weight and should not release more than 0.5 micrograms of the metal per square centimetre of their surface area per week.
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