Skullgard Protective Cap Type K

Skullgard Protective Cap Type K

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Usage conditions apply
Bakelite helmet with inscription with reading “M.S.A. Skullgard / Protective Hat - Type K / Size 7 ¼.” The Mine Safety Appliances Company was established in Pittsburgh in 1914, two years after a particularly deadly mine disaster in West Virginia. Its first product, developed with the help of Thomas A. Edison, was an electric cap lamp. The firm introduced the term “Skullgard” in 1932.
Currently not on view
Object Name
Bakelite Helmet
Date made
ca. 1935
date made
ca 1935
Mine Safety Appliances Company
place made
United States: Pennsylvania, Pittsburgh
Associated Place
United States: New Jersey
overall: 14 cm x 26.5 cm x 30.1 cm; 5 1/2 in x 10 7/16 in x 11 7/8 in
overall: 6 1/2 in x 10 1/2 in x 12 in; 16.51 cm x 26.67 cm x 30.48 cm
ID Number
catalog number
accession number
Credit Line
Gift of Union Carbide Corporation
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
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