You have seen them in antique stores, especially in mining towns: tarnished brass cylinders with a reflective dish on one side and a bracket for clipping them onto a ...
After around 1915, miners debated which technology they favored to light their work underground, a carbide lamp or a battery light. Both were superior to candles and oil lamps that would blow out when ...
The depth, the dark, and the dangers inherent in mining created a uniquely dangerous working environment for the miner. Miners faced death from collapsing mines, oxygen deprivation, and haulage ...
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