Photograph showcasing investigations being conducted on coal dust bombs, dust clouds, and explosions of coal dust placed in bombs by the Bureau of Mines. The experiments were performed at the Experimental Mine in Bruceton, Penna under the supervision of George S. Rice, the Chief Mining Engineer. Purpose of experiments unknown.

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

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