Invented by Humphrey Davy in the early 19th century ... an improved version at his Arc Works in Chelmsford. He placed the arc at the bottom of the lamp, so that the lamp housing did not cast ...
My Granddad worked in the mines with this Davy lamp nearly 40 years ago in Doncaster. He told me a story about what it was like to work down the mine in Doncaster with only this small lamp to see.
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