The oil-wick mining lamp that is present in this picture employed an exposed flame in order to provide the light necessary fo… | Oil lamps, Teapot lamp, Coal mining
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Mining Lights and Hats -- Helmets | National Museum of American History
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Mining Lights and Hats | National Museum of American History
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Head and shoulders of a miner covered it soot and wearing a miners hat with light. | Coal mining, Coal miners, Lewis hine
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