Prior to the 1920s, miners wore a soft cap made of cloth or canvas with a leather brim and lamp bracket to hold their light. But in 1919 ... Both MSA-manufactured helmets are represented in the mining ...

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

Mine safety lights eventually developed to include a glass enclosure ... Just like the soft mining caps that were used to hold oil-wick or carbide mining lamps, mining helmets were used to hold the ...