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Saving life by barricading in mines and tunnels at times of disaster

Published Year

• 1930-1939 (1) *

Subject

• Accidents--Prevention--United States (1) *
• Blast effect--Testing (1) *
• Building, Bombproof--Testing (1)

Author

• Bernewitz, Max Wilhelm von, (1)
• Harrington, Daniel. (1)

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