Miners Safety Lamp

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An artificial source of visible illumination, an oil lamp that will not ignite flammable gasses.

Keywords

lamp, illumination, Luminosity, brightness, source of illuminance, brightness level, luminance, luminousness

Galleries

Mining

Source

Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)

Downloads

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585×1024, 71.5 KiB

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365×640, 37.1 KiB

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