Investigations into coal dust bombs conducted by the Bureau of Mines at its Experimental Mine in Bruceton, Pennsylvania. The purpose of these investigations was to analyze the behavior of coal dust placed in bombs and its potential to create explosive dust clouds. This photo captures the testing process.

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Size: 8448px × 5862px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., 1918, activities, american, bomb, bombs, bruceton, bureau, chief, clouds, coal, dust, efforts, engineer, experimental, explosions, george, investigations, military, mines, mining, pennsylvania, photographs, rice, testing, war, world