London, England/london2C-130
Previous | Home | NextThe flint mill functioned by holding a piece of flint against a rotating steel wheel. This produced sparks, which were incredibly dangerous in the presence of firedamp (methane) in mines.
London, England/london2C-130Previous | Home | NextThe flint mill functioned by holding a piece of flint against a rotating steel wheel. This produced sparks, which were incredibly dangerous in the presence of firedamp (methane) in mines. |
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