Dunnite should not be confused with the rock, dunite.

Dunnite, also known as Explosive D, C6H2(NO2)3ONH4 or Ammonium picrate was developed by Major Dunn in 1906 and was used extensively by the United States Navy during World War I.

Dunnite consisted of ammonium picrate powder and was considered an insensitive substance. By 1911, the United States Army had abandoned the use of dunnite. The Navy, however, used it in armour-piercing artillery shells and projectiles, and in coastal defence.

Dunnite typically did not detonate when it contacted heavy armour. Rather, the shell encasing it would tear open the protective armour. A fuze would then be triggered, causing detonation.

Recently, caches of discarded Dunnite in remote locations was mistaken for rusty rocks at Cape Porcupine, Newfoundland and Labrador.


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