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| Nanotesla |
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International SI unit for measuring magnetic flux density.
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| Native gold |
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Gold in its free state. Also called placer gold or free gold.
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| Native metal |
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A metal occurring in nature in pure form, uncombined with other elements.
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| Natural ventilation |
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Mine ventilation without the aid of fans or furnaces.
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| Newton (N) |
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Unit of force equivalent to the force that produces an acceleration of one metre per second per second on a mass of one kilogram.
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| Non-metallic |
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Containing little or no metal; industrial mineral.
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| Nonel |
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Hollow plastic tube coated with a reactive explosive compound used to trigger explosions. No electric current is used.
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