Alfred Bernhard Nobel Collection
Nitroglycerin processing plant, explosives factory, Val Bormida, near Cengio, Italy, 1888
Nitroglycerin processing plant, explosives factory, Val Bormida, near Cengio, north-west Italy, 1888. Nitroglycerin was mixed with Kieselghur (a diatomaceous earth) to produce Dynamite
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