Invented around 1910, the small carbide cap lamp had several advantages over an oil-wick cap lamp. The acetylene gas that powered the flame burned cleanly, relieving the miner from the smoke and soot ...

Invented around 1910, the small carbide cap lamp had several advantages over an oil-wick cap lamp. The acetylene gas that powered the flame burned cleanly, relieving the miner from the smoke and soot ...