Smoke emerges from the bombproof as a result of a military explosive's detonation rate being tested by the Bureau of Mines during their war efforts. The photograph, taken November 14, 1918, serves as documentation of their work.

---

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

Keywords: 14, 1918, activities, advancements, american, bomb, bureau, cloud, contribution, demonstrations, determination, detonation, development, documentation, efficiency, effort, efforts, emission, engineering, evaluation, evidence, experimental, experiments, explosive, explosives, images, innovation, military, mines, november, operations, photograph, photographic, photography, planning, procedures, proof, rate, research, science, shelter, smoke, technological, technology, testing, wa, war, wartime, warzone, work, world