Both MSA-manufactured helmets are represented in the mining collection in the Division of Work and Industry. Rescue Team with Edison Cap Lamps & MSA Breathing Apparatus. Jenkins, Kentucky, 1926.

Just like the soft mining caps that were used to hold oil-wick or carbide mining lamps, mining helmets were used to hold the new electric cap lamp. The lamp sat in a bracket at the front of the helmet ...

The table below outlines the Helmet modifications for Deep Mining Space Helmet including the Modification Slot, Description, Resources, and Item Code.