These lamps were worn on soft caps that offered little in the way of protection and were mainly worn for the convenience of having a light source in front of the miner's face. Simmons Carbide Lamp, ca ...

Rescue Team with Edison Cap Lamps & MSA Breathing Apparatus. Jenkins, Kentucky, 1926. Carbide lamps were still used with hard protective helmets, but helmets that used electric lamps would have a cord ...