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Did You Know? · before 2 h.

A carbide cap lamp, also known as an acetylene lamp, worn on miners’ helmets during the early to mid-20th century. Did you know? 🎓

A carbide cap lamp, also known as an acetylene lamp, worn on miners’ helmets during the early to mid-20th century. Did you know? 🎓
A carbide cap lamp, also known as an acetylene lamp, worn on miners’ helmets during the early to mid-20th century. Did you know? 🎓

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