They do require calcium carbide, which must be kept extremely dry. It is harder and harder to obtain.
If you get it wet, it releases acetylene, which will happly explode in atmospheric concentrations ranging from something like 8 to 95%. I can think of reasons why people choose not to use carbide lamps...
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-IronRaven
When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.
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