| 21. | Israel Whelen, Sr ., built the Nitre Hall Powder Mills on Cobb's Creek, which were in operation by 1810.
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| 22. | He correctly identified this'food of life'with the gas ( also oxygen ) given off by heating nitre ( saltpetre ).
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| 23. | St . John resigned from the Nitre and Mining Bureau on January 31, 1864 because the Confederate Senate accused him of protecting draft dodgers.
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| 24. | Breckinridge recommended that Davis appoint Isaac M . St . John, head of the Confederate Nitre and Mining Bureau, as permanent commissary general.
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| 25. | Prior to Transphorm, he co-founded Nitres Inc . in 1996, which was the first company to develop GaN LEDs and transistors.
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| 26. | The Confederate Nitre and Mining Bureau mined lead and saltpeter ( an ingredient in gunpowder ) in Newton, Marion, Pulaski, and Sevier counties.
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| 27. | This describes the preparation of what Agricola calls " juices " : salt, soda, nitre, alum, vitriol, saltpetre, sulphur and bitumen.
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| 28. | On 21 July 1921, an explosion at the " Nitre " chemical plant claimed 15 lives, destroyed the factory and damaged neighboring buildings.
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| 29. | A chalybeate spring in Mr . Shewcraft's grounds is said to be efficacious in scorbutic cases; its chief component parts are nitre and sulphur.
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| 30. | The island's vegetation is a closed heath, of which the dominant plant species is " Nitraria billardierei " ( nitre bush ).
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