Both MSA-manufactured helmets are represented in the mining collection in the Division of Work and ... National Museum of American History Coal King Miner’s Helmet National Museum of American History ...

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

The oil-fueled flame was exceedingly smoky, and could easily ignite flammable gasses (mainly methane) found in coal mines ... Just like the soft mining caps that were used to hold oil-wick or carbide ...