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Difference between revisions of "40d:Saltpeter"
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(New page: Category:Sedimentary Stone Layers) |
(Historically, saltpeter (saltpetre, potassium nitrate) was a necessary ingredient in gunpowder.) |
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| + | Historically, saltpeter (saltpetre, [http://en.wikipedia.org/wiki/Potassium_nitrate potassium nitrate]) was a necessary ingredient in gunpowder. Crystallized urine was a major source. | ||
[[Category:Sedimentary Stone Layers]] | [[Category:Sedimentary Stone Layers]] | ||
Revision as of 11:42, 5 November 2007
Historically, saltpeter (saltpetre, potassium nitrate) was a necessary ingredient in gunpowder. Crystallized urine was a major source.